Tag Archives: University of Adelaide

Citizen science app (iNaturalist) may play a role in Australian mushroom murder trial

Caption: Death cap mushrooms (Amanita phalloides) Credit: Jolanda Aalbers/Shutterstock [downloaded from https://theconversation.com/what-is-inaturalist-the-citizen-science-app-playing-an-unlikely-role-in-erin-pattersons-mushroom-murder-trial-255714]

The woman’s trial is still ongoing and my interest is in the citizen science aspect of it all. Here’s a precis of the murder trial and a discussion of iNaturalist from a May 2, 2025 essay by Caitlyn Forster, associate lecturer, University of Sydney, and Melissa Humphries, senior lecturer, University of Adelaide, for The Conversation, Note: Links have been removed,

The world has been gripped by the case of Australian woman Erin Patterson, who was charged with the murder of three people after allegedly serving them a lunch of beef wellington containing poisonous death cap mushrooms (Amanita phalloides).

A new element of the sensational story emerged in court this week, when prosecutors reportedly alleged Patterson used iNaturalist to locate and visit places where death cap mushrooms were known to grow.

So what exactly is iNaturalist? And how is this 17-year-old citizen science project being used to better understand our world?

More than 240 million observations worldwide

iNaturalist is an app that allows users to take photos of plants, fungi, animals and any piece of nature. The photos are uploaded, and identified using a combination of crowd-sourcing and artificial intelligence.

When a user uploads an image, they can also choose to make the location public, so others can see where it was found. iNaturalist’s database holds more than 240 million observations wordlwide. More than 10.6 million of these are in Australia.

All of this data is extremely important for scientists to understand the ecology of different species. iNaturalist has played a key role in the discovery of new species as well as sightings of species that have previously not been seen for decades.

Finding the unusual

Real people usually collect images for iNaturalist as part of their everyday life, rather than systematically as part of their job. That means there are patterns to the data that is collected.

Observations tend to be recorded on weekends and in good weather, and to involve life forms people find strange, unusual or interesting.

For example, at the time of writing, iNaturalist had recorded 1,382 sightings of domestic cats in Australia, compared with 29,660 koalas. But cataloguing the rare and wonderful can be useful.

In 2011, iNaturalist added more features to protect geoprivacy – which allows locations of observations to be obscured. Rare and exciting pets, and collectable insects could be found by looking at location data on iNaturalist.

There is previous evidence this has occurred. Nowadays, species of concern for poaching automatically have their locations obscured, preventing them from being illegally poached or collected. This can also be helpful to prevent people crowding popular endangered animals when they have been sighted.

Typically, anything listed as endangered will automatically have an obscured location on iNaturalist.

Observing nature has huge benefits to understanding our natural world. But these observations do collect a lot of personal data in terms of where and when the observation occurred.

Although iNaturalist doesn’t sell users’ information, and users can obscure their precise location, the pictures a person shares can still contain enough information to figure out where they are.

This could be used for forensic intelligence to locate plants and animals of interest, and to place people with them at the time the photo was taken.

If you’re lucky enough to see a rare or threatened species, consider taking a photo that has little background information that can give away the precise details of the locations, particularly when observing immobile organisms like such as plants and fungi.

iNaturalist is a fantastic resource for observing nature. More data points to understand where plants, animals, and mushrooms can be found is vital for understanding their ecology, and potentially conserving species.

It also has huge ramifications for biosecurity, forensics, and even understanding movements that may have occurred during an alleged crime. So it’s really worth getting out in nature and taking photos of interesting things you see!

For anyone curious about the trial, Ms. Patterson is currently testifying on her own behalf, there’s the Australian Broadcasting Corporation’s (ABC) “Erin Patterson Mushroom Murder Trial” blog with live updates or the British Broadcasting Corporation’s (BBC) “Deadly mushroom cook calculated fatal dose on kitchen scales, prosecution alleges” live blog.

I have few comments, it’s well known that some varieties of mushrooms can be fatal and they have been inadvertently or purposefully implicated in more than one death. It’s up to a jury to decide Ms. Patterson’s guilt or innocence and I imagine the folks at iNaturalist are making some adjustments to what geolocation information is being shared on their site.

Getting back to citizen science and iNaturalist, there’s this from their homepage, Note: A link has been removed,

Contribute to Science

Every observation can contribute to biodiversity science, from the rarest butterfly to the most common backyard weed. We share your findings with scientific data repositories like the Global Biodiversity Information Facility to help scientists find and use your data. All you have to do is observe.

On that note, let’s contribute to science.

Everyone’s talking about* insects/bugs: InsectNet technology, a park for bugs, and more

I have been stumbling across bug (or insect) research at a greater rate than usual and while the ‘bug-informed’ community is, no doubt, acutely aware of the loss of insect life, the severity of the situation was a revelation to me.

Bugpocalypse (h/t IFLScience for the head)

Caption: Drosophila use multiple mechanisms to adapt to hot, dry desert temperatures. Credit: Sarah Becan for the Gallio Lab/Northwestern University

This work looks at adaptation strategies, from a March 5, 2025 Northwestern University (Chicago, Illinois) news release (also on EurekAlert) by Win Reynolds, Note: Links have been removed,

  • Insect populations, foundational to food chains and pollination, have dramatically declined over the past 20 years due to rapid climate change
  • Scientists identify two ways fly species from different climates (high-altitude forest and hot desert) have adapted to temperature
  • Paper provides evidence that changes in brain wiring and heat sensitivity contributed to shifting preference to hot or cold conditions, respectively
  • Results may help predict the impact of ongoing climate change on insect distribution and behavior

EVANSTON, Ill. — Tiny, cold-blooded animals like flies depend on their environment to regulate body temperature, making them ideal “canaries in the mine” for gauging the impact of climate change on the behavior and distribution of animal species. Yet, scientists know relatively little about how insect sense and respond to temperature.

Using two species of flies from different climates — one from the cool, high-altitude forests of Northern California, the other hailing from the hot, dry deserts of the Southwest (both cousins of the common laboratory fly, drosophila melanogaster) — Northwestern scientists discovered remarkable differences in the way each processes external temperature.

Forest flies showed increased avoidance of heat, potentially explained by higher sensitivity in their antennae’s molecular heat receptors, while desert flies were instead actively attracted to heat, a response that could be tracked to differences in brain wiring  in a region of the fly brain that helps compute the valence (inherent attractiveness or aversiveness) of sensory cues.

The scientists believe these two mechanisms may have accompanied the evolution of each species as it adapted to its distinctive thermal environment, starting from a common ancestor dating back 40 million years (not long after dinosaurs went extinct).

These findings, published today (March 5 [2025]) in the journal Nature, help understand how animals evolve the preferences for specific temperature environments and may help predict the impact of a rapidly changing climate on animal behavior and distribution.

‘Not enough people care about insects’

“Insects are especially threatened by climate change,” said Northwestern neurobiologist Marco Gallio. “Behavior is the first interface between an animal and its environment. Even before the struggle to survive or perish, animals can respond to climate change by migration and by changing their distribution. We are already seeing insect populations declining in many regions, and even insect vectors of disease like the Zika virus and malaria spreading into new areas.”

Gallio, a self-appointed “insect advocate,” is a professor in the neurobiology department and the Soretta and Henry Shapiro Research Professor in Molecular Biology at the Weinberg College of Arts and Sciences. His lab examines fruit flies and their sensing systems. Gallio acknowledged there is limited data because “not enough people care about the insects,” but that available figures record a dramatic decline in insects in the past 20 to 50 years. Though bug haters may rejoice, Gallio said the population decline in the animal group with the most species on Earth is nothing to celebrate.

In addition to their position at the foundation of most terrestrial food chains, insects pollinate 70% of our crops. Gallio said losing insect communities could cause catastrophic damage to ecosystems across the globe and have a direct impact on human wellbeing.

Understanding heat circuits in the brain

Previous work from the Gallio Lab focused on how small insects like laboratory flies respond to sensory cues like harmless and painful temperature changes.

“The common fruit fly is an especially powerful animal to study how the external world is represented and processed within the brain,” Gallio said. “Many years of work on fly genetics and neuroscience have given us a map of the fly brain more detailed than that of any other animal.”

In the present study, Gallio and colleagues wondered how the brain circuits and resulting behaviors compared in fly species that were very similar aside from their choices of thermal habitat.

Using genetic tools, including CRISPR [clustered regularly interspaced short palindromic repeats], to knock out certain genes and gene swaps between species, the team studied both the molecular and brain mechanisms that may explain species-specific differences in temperature preference.

Ph.D. student and lead author Matthew Capek explained that they first found differences in the molecules that detect heat, causing them to activate at different temperatures. And while Capek said the difference in activation could explain the forest flies’ preference for cooler environments, a shift in receptor activation was not enough to explain the behavior of the desert fly.

“The desert fly seemed actively attracted to warmer temperatures — around 90 degrees Fahrenheit compared to the forest fly’s sweet spot just below 70 degrees,” said Capek, who works in the Gallio lab. “In fact, the activation threshold of the antenna heat sensors corresponded to their favorite temperature range, which they will seek, rather than to a temperature they should avoid.”

“In other words, the fly doesn’t behave any longer as though the antennae are telling it to run away from dangerous heat; they seem to be telling it higher temperatures are good, and to approach them.”

High cost, high reward

Gallio was initially puzzled — deserts are hot, so it did not make sense that flies sought out heat — but a lab trip to the Anza Borrego desert of Southern California provided key inspiration.

“Deserts in this region are very hot during the day, but temperatures can drop extremely rapidly when the sun goes down, and night can be downright freezing,” said Alessia Para, also a key author of the study and a research associate professor of neurobiology. “Flies in this climate may need to constantly attend to the rapidly changing temperature and always seek the ideal range, finding shady spots during the day and hiding in cacti for warmth at night.”

Flies from more forgiving environments may instead ignore temperature except when it changes rapidly. Constantly detecting the right temperature is costly from an energy perspective, but for desert flies, it’s life or death.

“This comparative work is useful in a couple of different ways,” Gallio said. “When an animal is born, the brain is already programmed to know if many of the things it will encounter are bad or good for it, and we do not understand how that programming works.

These fly species represent a natural experiment because a stimulus that is good for one species is bad for the other, and we can study the differences that make it so. We also want to learn more about how animals have been able to adapt to different temperatures during evolution, so that we may be able to better understand and even predict how they react to ongoing climate change. Of course we care about the insects, and we hope that what we learn may help us appreciate and protect them better.”

There’s more but first, a citation and a link to the Gallio Lab’s paper,

Evolution of temperature preference in flies of the genus Drosophila by Matthew Capek, Oscar M. Arenas, Michael H. Alpert, Emanuela E. Zaharieva, Iván D. Méndez-González, José Miguel Simões, Hamin Gil, Aldair Acosta, Yuqing Su, Alessia Para & Marco Gallio. Nature (2025) DOI: https://doi.org/10.1038/s41586-025-08682-z Published: 05 March 2025

This paper is behind a paywall.

Bugs Matter

Thanks to buglife.org.uk for the subhead and the report. Here’s more from their April 30, 2025 press release, Note: Links have been removed,

The troubling extent of insect declines across the UK has been highlighted once again by the results of the 2024 Bugs Matter citizen science survey published today. The latest data shows that the number of flying insects sampled on vehicle number plates, across the UK, has fallen by a staggering 63% since 2021.

The Bugs Matter survey, led by Kent Wildlife Trust in partnership with invertebrate charity Buglife, relies on a nationwide network of volunteer citizen scientists who record insect splats on their vehicle number plates after journeys, using the Bugs Matter app built by Natural Apptitude. Analysis of records from more than 25,000 journeys across the UK since 2021 shows an alarming decrease in bug splats but data from 2024 shows this decrease has slowed.

Insects are critical to ecosystem functioning and services. They pollinate crops, provide natural pest control, decompose waste and recycle nutrients, and underpin food chains that support birds, mammals and other wildlife. Without insects, the planet’s ecological systems would collapse.

Dr. Lawrence Ball of Kent Wildlife Trust stated: “This huge decrease in insect splats over such a short time is really alarming. Its most likely that we are seeing the compounding effects of both a background rate of decline as well as a short term cycle of decline, perhaps linked to the extreme climate in the UK in recent years. Bug splats declined 8% from 2023 to 2024, following sharper drops of 44% in 2023 and 28% in 2022. This shows the rate of decline has slowed and it may even flatten or reverse next year. Continued support from citizen scientists is key to revealing the overall trend in insect numbers.”

The new data shows a decrease in insect splat rates across all the UK nations, with the sharpest fall between 2021 and 2024 recorded in Scotland at 65%. In England, the number of insect splats fell by 62%, in Wales by 64%, and in Northern Ireland by 55%, over the same time period.

Andrew Whitehouse, from Buglife added: “The latest Bugs Matter data suggests that the abundance of flying insects in our countryside has fallen again. The consequences are potentially far-reaching, not only impacting the health of the natural world, but affecting so many of the essential services that nature provides for us. Human activities continue to have a huge impact on nature, habitat loss and damage, pesticide use, pollution, and climate change all contribute to the decline in insects. Society must heed the warning signs of ecological collapse, and take urgent action to restore nature.”

Participation in Bugs Matter is growing and the number of journeys recorded in 2024 far exceeded previous years. This is in part thanks to a new partnership with Openreach, owner of the nation’s second largest commercial van fleet.

Peter Stewart, Openreach’s UK Operations Director for Service Delivery said: “We’re excited to participate in the ‘Bugs Matter’ survey for the second year. Our engineers travel millions of miles annually across the UK to build and maintain our network, making it easy for them to measure insect splats on vehicle number plates. We recognise the crucial role pollinators play for all of us to thrive, and as part of our strategy to protect nature, we’re proud to support this campaign again. Last year, we contributed around 10% of the registered journeys, and with our 25,000-strong fleet, we aim to do even better this year.”

Andrew Whitehouse concluded: “Thank you to everyone who participated in the Bugs Matter survey in 2024. Your contribution has provided invaluable insights into the health of our insect populations and wider environment. We are relaunching the survey on May 1 this year [2025], and with our expansion into the Republic of Ireland, we hope to engage even more people in this crucial citizen science effort.”

The 2025 Bugs Matter survey will run from Saturday 1 May to Tuesday 30 September. It is quick, free and easy to get involved – simply download the free mobile phone app and start recording insect splats on vehicle journeys.

Expansion into Republic of Ireland

In response to growing interest and the need for more comprehensive data, the Bugs Matter survey is expanding into the Republic of Ireland for the 2025 season, thanks to the Amazon Web Services (AWS) Imagine Grant ‘Go Further, Faster’ Award received by Bugs Matter at the end of 2024. This grant provides vital resources to non-profit organisations looking to deploy cloud technology as a central tool to achieve their mission goals, and is providing Bugs Matter with a combination of funding, cloud computing credits, and engagement with AWS technical specialists. This marks an important step in building a more complete picture of insect populations across the British Isles, and future expansion of the Bugs Matter survey.

Dr. Lawrence Ball of Kent Wildlife Trust stated,We’re extremely grateful for the financial and technical support from Amazon Web Services, which means we can launch in Ireland this year and in more countries in 2026. If you drive or know someone who drives in Ireland, please download the app, sign up, and take part! The UK results highlight the importance of understanding insect numbers elsewhere.”

The charities caution that continued long-term monitoring is essential to track the precise magnitude of these alarming trends, but stress that the current pace of decline is clearly ecologically unviable. By taking part in the Bugs Matter survey each year, citizen scientists can provide crucial data to better understand insect population patterns and support evidence-based conservation actions.

Zac Sherratt’s April 30, 2025 article for the British Broadcasting Corporation’s (BBC) online news website offers little more information,

A survey tracking the “staggering” decline in insect numbers across the UK and Ireland has begun.

The Bugs Matter survey, led by Kent Wildlife Trust and invertebrate charity Buglife, runs from 1 May to 30 September each year and sees “citizen scientists” record the number of bug splats on their vehicle number plates after a journey.

Dr Ball [Dr. Lawrence Ball of Kent Wildlife Trust ] said: “Without insects, the planet’s ecological systems would collapse so this huge decrease in insect splats over such a short time is really alarming.”

Bug splats declined 8% in 2024, following sharper drops of 44% in 2023 and 28% in 2022.

Dr Ball said the slowing rate of decline shows the curve may flatten or even reverse next year.

More than 25,000 journeys have been analysed as part of the survey since 2021.

You can find the 2024 The Bugs Matter Citizen Science Survey here and the Buglife organization (and signup information for the 2025 survey) here.

IFLScience (and Bugpocalypse)

There’s an interesting back story for IFLScience (which started life as as Facebook page titled, “I Fucking Love Science”). If you want to find out more about IFLScience’s origins and founder, there’s Elise Andrew’s Wikipedia entry.

Returning to the bugs, Dr. Russell Moul’s April 30 (?), 2025 article for IFLScience further highlights the plight of insects around the world, Note: Links have been removed,

Insect populations have been declining across the world at an alarming rate, but no one has been sure why. According to a new study, intense agricultural practices are at the top of the list of causes, but there are multiple interrelated factors that are all contributing to quickly killing off these vital creatures.

“Insects are fundamental to life on earth. They are really important pollinators, decomposers, and prey for birds, bats, reptiles, and other species”, Eliza Grames, Assistant Professor of Biological Sciences, told IFLScience.

“Insects pollinate around 80 percent of wild flowering plants, and 75 percent of agricultural crop species rely on insects for pollination. Without insects as decomposers, the earth would essentially be covered in manure. Cow manure takes 60 percent longer to deteriorate when insects are excluded from an area.”

But despite their importance, insect numbers are declining. In 2017, a devastating study demonstrated that there has been more than a 75 percent decline in insect populations over the last three decades. As a result, scientists have been seeking to identify the likely causes for this decline.

In order to understand which causes the scientific community has found so far, Grames and colleagues from Binghamton University examined some 175 scientific reviews, which contained over 500 hypothesized drivers behind the decline. This information allowed the team to create an interconnected network of 3,000 possible links, known as a meta-synthetic approach, which spanned everything from beekeeping and deforestation to urban sprawl and parasites.

Within this network of information, the team found that intensified agriculture was the most cited driver behind the mass die-off. This was linked to issues such as land-use change and insecticides. However, focusing solely on the most cited drivers is not the way to interpret this information. As the team note in their work, the results show how interconnected the drivers are, highlighting complex issues.

For example, the climate may be an important driver behind the decline, but there are aspects within that, such as extreme precipitation, fire, and temperature rises, which can then contribute to other drivers. It’s an extremely connected and synergistic network.

“The drivers of insect decline are really complex and there are many overlooked stressors that we should be thinking about and researching,” Grames told IFLScience.

If you have a little more time, you can find some interesting tidbits in Moul’s April 30 (?), 2025 article.

Here’s a link to and a citation for the recent meta-analysis/meta-synthesis mentioned in the article,

Meta-synthesis reveals interconnections among apparent drivers of insect biodiversity loss by Christopher A Halsch, Chris S Elphick, Christie A Bahlai, Matthew L Forister, David L Wagner, Jessica L Ware, Eliza M Grames. BioScience, biaf034 DOI: https://doi.org/10.1093/biosci/biaf034 Published: 22 April 2025

This paper is behind a paywall.

InsectNet

A February 6, 2025 news item on ScienceDaily announces an application that uses machine learning for insect identification,

A farmer notices an unfamiliar insect on a leaf.

Is this a pollinator? Or a pest? Good news at harvest time? Or bad? Need to be controlled? Or not?

That farmer can snap a picture, use a smartphone or computer to feed the photo into a web-based application called InsectNet and, with the help of machine learning technology, get back real-time information.

“The app identifies the insect and returns a prediction of its taxonomic classification and role in the ecosystem as a pest, predator, pollinator, parasitoid, decomposer, herbivore, indicator and invasive species,” said a scientific paper describing InsectNet recently published by the journal PNAS Nexus [PNAS stands for Proceedings of the National Academy of Sciences of the US]. Iowa State University’s Baskar Ganapathysubramanian and Arti Singh are the corresponding authors.

..

A February 5, 2025 Iowa State University news release (also on EurekAlert but published February 6, 2025), which originated the news item, delves further into InsectNet,

InsectNet – which is backed by a dataset of 12 million insect images, including many collected by citizen-scientists – provides identification and predictions for more than 2,500 insect species at more than 96% accuracy. When the application isn’t sure about an insect, it says it is uncertain, giving users more confidence when it does provide answers.

And, because the application was built as a global-to-local model, it can be geographically fine-tuned using expert-verified local and regional datasets. That makes it useful to farmers everywhere.

So, beware, armyworms, cutworms, grasshoppers, stink bugs and all the other harmful insects. And, hello, butterflies, bees and all the other pollinators. Good to see you, lady beetles, mantises and all the other pest predators.

“We envision InsectNet to complement existing approaches, and be part of a growing suite of AI technologies for addressing agricultural challenges,” the authors wrote.

A village of researchers

InsectNet’s ability to be fine-tuned for specific regions or countries make it particularly useful, said Singh, an associate professor of agronomy.

In Iowa, for example, Singh said there are about 50 insect species particularly important to the state’s agricultural production. To identify and provide predictions about those insects, Singh said the project used about 500,000 insect images.

That could happen for farmers all over the globe. And wherever there isn’t sufficient data – these sophisticated models often require millions of images – for local fine-tuning, the global dataset is still available for farmers.

InsectNet isn’t just for farmers, though. Singh said it could also help agents at ports or border crossings identify invasive species. Or it could help researchers working on ecological studies.

So, the app is usable and flexible. But is it accessible?

You can’t go to an app store and download a version just yet, said Ganapathysubramanian, the Joseph and Elizabeth Anderlik Professor in Engineering and director of the AI Institute for Resilient Agriculture based at Iowa State. But the app is running on a server at Iowa State. With a QR code (see sidebar) or this URL (insectapp.las.iastate.edu/), users can upload insect pictures and get an identification and prediction.

This works throughout the stages of an insect’s life: from egg to larva to pupa to adult. It works with look-alike species. And it works with diverse image qualities and orientations.

The bottom line for any user is basic information about an insect: “Is this a pest?” Singh said. “Or is it a friend?”

Developers demonstrated the app during last August’s Farm Progress Show in Boone, Iowa. And now the research paper is introducing it to a broader, scientific audience.

But aren’t there already apps that help identify insects?

Yes, said Ganapathysubramanian, but they’re not to the scale of InsectNet and aren’t capable of global-to-local applications. And they’re also not open-source applications with technology that can be shared.

“Making InsectNet open source can encourage broader scientific efforts,” he said. “The scientific community can build on these efforts, rather than starting from scratch.”

The project also answered a lot of technical questions that could be applied to other projects, he said.

How much data is enough? Where can we get that much data? What can we do with noisy data?

How much computer power is necessary? How do we deal with so much data?

“Lastly, it takes a village of expertise to get to this point, right?” said Ganapathysubramanian.

It took agronomists and computer engineers and statisticians and data scientists and artificial intelligence specialists about two years to put InsectNet together and make it work.

“What we learned working with insects can be expanded to include weeds and plant diseases or any other related identification and classification problem in agriculture,” Singh said. “We’re very close to a one-stop shop for identifying all of these.”

Paper co-authors are:

Iowa State University

  • Shivani Chiranjeevi (first author)
  • Mojdeh Saadati
  • Talukder Z. Jubery
  • Daren Mueller
  • Matthew E. O’Neal
  • Asheesh K. Singh
  • Soumik Sarkar
  • Arti Singh (corresponding author)
  • Baskar Ganapathysubramanian (corresponding author)

Carnegie Mellon University

  • Jayanth Koushik
  • Aarti Singh

University of Arizona

  • Zi K. Deng
  • Nirav Merchant

Funding

The InsectNet project was supported by the U.S. Department of Agriculture’s National Institute of Food and Agriculture (through the AI Institute for Resilient Agriculture), the National Science Foundation (through COALESCE: COntext Aware LEarning for Sustainable CybEr-Agricultural Systems), the NSF’s Smart and Connected Communities Program, the USDA’s Current Research Information System Project, and Iowa State’s Plant Sciences Institute.

Here’s a link to and a citation for the paper,

InsectNet: Real-time identification of insects using an end-to-end machine learning pipeline by Shivani Chiranjeevi, Mojdeh Saadati, Zi K Deng, Jayanth Koushik, Talukder Z Jubery, Daren S Mueller, Matthew O’Neal , Nirav Merchant , Aarti Singh , Asheesh K Singh , Soumik Sarkar , Arti Singh , Baskar Ganapathysubramanian. PNAS Nexus, Volume 4, Issue 1, January 2025, pgae575, DOI: https://doi.org/10.1093/pnasnexus/pgae575 Published: 27 December 2024

This paper is open access.

Bugs and kids

The University of Adelaide’s (Australia) March 25, 2025 press release (also on EurekAlert but published March 24, 2025) announces some research on insect-related, school-based citizen science,

Pro-environmental behaviour increases among school students who participate in insect-related citizen science projects, according to new research from the University of Adelaide.

Students who participated in citizen science project Insect Investigators, which engages students in the discovery of new insects, not only expressed an intention to change their personal behaviour but also to encourage others to protect nature.

“As a result of their involvement in this program, students expressed intentions to further engage in insect–science–nature activities,” says the University of Adelaide’s Dr Erinn Fagan-Jeffries, who contributed to the study.

“In addition, teachers reported increased intentions to include insect-related topics in their teaching, which was positively associated with students’ own intentions for pro-environmental behaviour change.

“This suggests students’ response to the project influenced their teacher’s decision to include citizen science in their lessons.”

School-based citizen science projects facilitate authentic scientific interactions between research and educational institutions while exposing students to scientific processes.

“Teachers’ motivations for providing citizen science experiences to students was to create hands-on learning opportunities and to connect students with real science and scientists,” says Professor Patrick O’Connor AM, Director of the University’s School of Economics and Public Policy.

“Teachers reported interactions with researchers as invaluable. These interactions could take the form of in-person visits by team members, or even instructional videos and curriculum-linked teacher lesson plans.”

Incorporating insects into school-based citizen science projects can challenge widespread human misconceptions about insects and their roles in ecosystems, and foster human–insect connections.

“Given global concerns of rapid insect declines and the overarching biodiversity crisis, insect-focused, school-based citizen science projects can ultimately contribute towards equipping students with knowledge of, and actions to promote, insect conservation,” says lead author Dr Andy Howe, from the University of the Sunshine Coast.

“In Australia, approximately 33 per cent of insects are formally described, the remainder exist as ‘dark taxa’, to the detriment of environmental and biodiversity management initiatives.

“Encouraging more young people to engage in science not only engenders positive feelings in them towards the environment, it will also help to build the next generation of scientists who will fill in the vast knowledge gap that exists in the world of insects.”

Before getting to the link and citation, here’s an update on the Australian higher education ecosystem, from the March 24, 2025 version of the press release on EurekAlert ,

The University of Adelaide and the University of South Australia are joining forces to become Australia’s new major university – Adelaide University. Building on the strengths, legacies and resources of two leading universities, Adelaide University will deliver globally relevant research at scale, innovative, industry-informed teaching and an outstanding student experience. Adelaide University will open its doors in January 2026. Find out more on the Adelaide University website.

Here’s a link to and a citation for the study,

Catching ‘the bug’: Investigating insects through school-based citizen science increases intentions for environmental activities in students and teachers by Andy G. Howe, Trang Thi Thu Nguyen, Patrick O’Connor, Alice Woodward, Sylvia Clarke, Nathan Ducker, Kate Dilger, Erinn P. Fagan-Jeffries. Austral Entomology Volume 64, Issue 2 May 2025 e70004 DOI: https://doi.org/10.1111/aen.70004 First published online: 18 March 2025

This paper is open access.

You can find Insect Investigators here. BTW, (from their About US webpage, “Inspired by the Canadian School Malaise Trap Program [hosted by the University of Guelph], we’re working with schools across South Australia, Western Australia and Queensland to collect specimens of invertebrates: butterflies, spiders and more.”)

Bugs and parks

The University of British Columbia (UBC) issued an April 22, 2025 news release (also received via email) by Sachi Wickramasinghe announcing research on ‘parks for bugs’,

As the days get longer and gardeners plan their spring planting, research from the University of British Columbia offers some good news this Earth Day: small, simple changes to urban green spaces can make a big difference for pollinators. The study, published in Ecology Letters, found that reducing lawn mowing and creating pollinator meadows – think of them as ‘parks for bugs’– significantly boosts pollinator diversity, creating healthier and more resilient ecosystems.

A buzzing success

The three-year study, conducted in collaboration with the City of Vancouver’s pollinator meadows program, surveyed pollinators in 18 urban parks across Vancouver, comparing parks where meadows were planted and mowing was restricted with parks that remained as standard turfgrass lawns.

And while the tall grass caused a small stir among some neighbours, the results were striking: parks with meadows saw an immediate increase in pollinator species, with 21 to 47 more wild bee and hoverfly species compared to parks without meadows. The increase persisted over the three-year study period, suggesting that the meadow parks also support pollinators in the long run.

More than 100 species of wild bees and hoverflies were identified, with 35 of them only found in parks with meadows – including the Vancouver and Nevada bumble bee, some miner bees such as the Milwaukee miner bee, the red-faced miner bee and several species of hoverflies.

“Many people think of urban landscapes as poor environments for biodiversity, but our research shows that small actions can have a lasting impact,” said lead author Jens Ulrich, a PhD candidate in the faculty of land and food systems. “You don’t need a lot of space or resources to make a difference.”

Urban landscapes as pollinator havens

Unlike farmland, where large fields with monocrops can limit pollinator movement, urban areas are full of green spaces—gardens, parks, and even roadside boulevards—that can serve as pollinator refuges. The patchwork of small habitats allows species to move freely and settle into restored areas quickly.

The research highlights the importance of maintaining and expanding such efforts. Ongoing management, such as adding more native plants and controlling invasive species, can further strengthen pollinator communities.

The findings also offer practical guidance for city planners and community groups looking to enhance urban green spaces, and have already informed the City of Vancouver’s long-term planning—helping to establish pollinator meadows as a permanent option for parks and shaping future efforts to balance ecological function with aesthetic and cultural values.

“With so much land dedicated to lawns, there’s a major opportunity to rethink how we use these spaces,” said co-author Dr. Risa Sargent, an associate professor in the faculty of land and food systems. “Even small patches of insect-friendly meadows can provide critical resources for pollinators.”

Whether you have a backyard, balcony, or community garden plot, you can support pollinators with these simple steps:

  • Reduce mowing: Pollinators thrive in areas where flowers are allowed to bloom. Consider letting a section of your lawn grow longer or mowing less frequently.
  • Plant native flowering shrubs and trees: Perennial species like native chokecherry, Pacific ninebark, oceanspray, native hawthorn, red flowering currant, salal, red-osier dogwood, snowberry and vine maple are great choices for British Columbia’s Lower Mainland.
  • Create a diverse habitat: Incorporate a variety of plants that bloom at different times of the year to provide food from spring to fall.
  • Avoid pesticides: Many urban areas, including Vancouver, have already restricted pesticide use, but avoiding chemical treatments in your own garden can further protect pollinators.
  • Leave natural nesting sites: Many native bees nest in the ground or in plant stems. Keeping some bare soil or leaving flower stalks through winter can provide valuable shelter.

Here’s a link to and a citation for the paper,

Habitat Restorations in an Urban Landscape Rapidly Assemble Diverse Pollinator Communities That Persist by Jens Ulrich, Risa D. Sargent. Ecology Letters Volume 28, Issue 1 January 2025 e70037 DOI: https://doi.org/10.1111/ele.70037 First published online: 31 December 2024

This paper is open access.

You can find out more about Vancouver’s Pollinator meadows (project) here.

*May 26, 2025 at 3:07 pm PT: ‘abut’ corrected to ‘about’

Effective treatment for acne sufferers with narasin encapsulated in soft nanoparticles

A September 14, 2023 news item on Nanowerk announces research that could lead to a treatment for people who suffer from acne,

It’s a skin disorder that makes life miserable for around 800 million teenagers and adults worldwide, but Australian scientists may have found an effective treatment for acne, delivered via tiny nanoparticles.

In a study led by the University of South Australia (UniSA), a new antibacterial compound known as Narasin was encased in tiny, soft nanoparticles 1000 times smaller than a single strand of human hair and applied in a gel form to targeted acne sites.

A September 14, 2023 University of South Australia press release (also on EurekAlert but published on September 13, 2023), which originated the news item, explains that narasin has been used for other purposes in the past, Note: Links have been removed,

The drug – more commonly used in the livestock industry – proved successful against drug-resistant acne bacteria and delivered via nanocarriers achieved a 100-fold increase in absorption than simply taken with water.

The findings have been published in the journal Nanoscale.

Lead author UniSA PhD student Fatima Abid says this is the first time that nano-micelle formulations of Narasin have been developed and trialled.

“Acne severely impacts approximately 9.4% of the world’s population, mainly adolescents, and causes distress, embarrassment, anxiety, low self-confidence and social isolation among sufferers,” Abid says.

“Although there are many oral medications prescribed for acne, they have a range of detrimental side effects, and many are poorly water soluble, which is why most patients and clinicians prefer topical treatments.”

Abid’s supervisor, pharmaceutical scientist Professor Sanjay Garg, says a combination of increasing antibiotic resistance and the ineffectiveness of many topical drugs to penetrate hair follicles in acne sites means there is a pressing need to develop new antibacterial therapies that are effective and safe.

Narasin is commonly used for bacterial infections in livestock but has never been previously investigated as a viable treatment for acne.

Abid, Prof Garg and researchers from UniSA, the University of Adelaide, and Aix-Marseille Université in France also investigated how well Narasin encased in nanoparticles penetrated various layers of skin, using pig’s ear skin as a model.

“The micelle formulation was effective in delivering Narasin to acne targets sites, as opposed to the compound solution which failed to permeate through skin layers,” Prof Garg says.

Here’s a link to and a citation for the paper,

Nanotechnology and narasin: a powerful combination against acne by Fatima Abid, Bhumika Savaliya, Ankit Parikh, Sangseo Kim, Marzieh Amirmostofian, Laura Cesari, Yunmei Song, Stephen W. Page, Darren J. Trott and Sanjay Garg. Nanoscale, 2023,15, 13728-13739 First published 14 Aug 2023

This paper is behind a paywall.

Using nanomagnets to remove plastic from water

it seems Australian researchers are working hard to find ways of removing microplastics from water. I have two items, first, a November 29, 2022 news item on Nanowerk announces some of the latest work,

Researchers at RMIT University have found an innovative way to rapidly remove hazardous microplastics from water using magnets.

Lead researcher Professor Nicky Eshtiaghi said existing methods could take days to remove microplastics from water, while their cheap and sustainable invention achieves better results in just one hour.

The team says they have developed adsorbents, in the form of a powder, that remove microplastics 1,000 times smaller than those currently detectable by existing wastewater treatment plants. 

The researchers have successfully tested the adsorbents in the lab, and they plan to engage with industry to further develop the innovation to remove microplastics from waterways.

A November 30, 2022 RMIT University press release, which originated the news item, provides more technical detail about the work,

“The nano-pillar structure we’ve engineered to remove this pollution, which is impossible to see but very harmful to the environment, is recycled from waste and can be used multiple times,” said Eshtiaghi from RMIT’s School of Environmental and Chemical Engineering.

“This is a big win for the environment and the circular economy.”

How does this innovation work?

The researchers have developed an adsorbent using nanomaterials that they can mix into water to attract microplastics and dissolved pollutants.

Muhammad Haris, the first author and PhD candidate from RMIT’s School of Environmental and Chemical Engineering, said the nanomaterials contained iron, which enabled the team to use magnets to easily separate the microplastics and pollutants from the water.

“This whole process takes one hour, compared to other inventions taking days,” he said.

Co-lead researcher Dr Nasir Mahmood said the nano-pillar structured material was designed to attract microplastics without creating any secondary pollutants or carbon footprints.

“The adsorbent is prepared with special surface properties so that it can effectively and simultaneously remove both microplastics and dissolved pollutants from water,” said Mahmood from Applied Chemistry and Environmental Science at RMIT.

“Microplastics smaller than 5 millimetres, which can take up to 450 years to degrade, are not detectable and removable through conventional treatment systems, resulting in millions of tonnes being released into the sea every year. This is not only harmful for aquatic life, but also has significant negative impacts on human health.”

The team received scientific and technical support from the Microscopy and Microanalysis Facility and the Micro Nano Research Facility, part of RMIT’s newly expanded Advanced Manufacturing Precinct, to complete their research. 

What are the next steps?

Developing a cost-effective way to overcome these signficant challenges posed by microplastics was critical, Eshtiaghi said.

“Our powder additive can remove microplastics that are 1,000 times smaller than those that are currently detectable by existing wastewater treatment plants,” she said.

“We are looking for industrial collaborators to take our invention to the next steps, where we will be looking at its application in wastewater treatment plants.”

Eshtiaghi and her colleagues have worked with various water utilities across Australia, including with Melbourne Water and Water Corporation in Perth on a recent Australian Research Council Linkage project to optimise sludge pumping systems.

Here’s a link to and a citation for the paper,

Self-assembly of C@FeO nanopillars on 2D-MOF for simultaneous removal of microplastic and dissolved contaminants from water by Muhammad Haris, Muhammad Waqas Khan, Ali Zavabeti, Nasir Mahmood and Nicky Eshtiaghi. Chemical Engineering Journal Available online 23 November 2022, 140390 DOI: https://doi.org/10.1016/j.cej.2022.140390

This paper is behind a paywall.

Back in 2019

Caption: This visual abstract depicts the findings of Kang et al.. Novel and robust nanocarbon springs were synthesized via solid pyrolysis with a controlled morphology, and simultaneously engineered nitrogen dopants and encapsulated magnetic nanoparticles. The carbocatalysts can effectively catalyze peroxymonosulfate to generate highly reactive radicals under hydrothermal conditions for decomposing microplastics into harmless substances in water. Credit: Kang et al/Matter

This July 31, 2019 Cell Press news release on EurekAlert announces a different approach, from an Australian team, to removing plastics from water,

Plastic waste that finds its way into oceans and rivers poses a global environmental threat with damaging health consequences for animals, humans, and ecosystems. Now, using tiny coil-shaped carbon-based magnets, researchers in Australia have developed a new approach to purging water sources of the microplastics that pollute them without harming nearby microorganisms. Their work appears July 31 in the journal Matter.

“Microplastics adsorb organic and metal contaminants as they travel through water and release these hazardous substances into aquatic organisms when eaten, causing them to accumulate all the way up the food chain” says senior author Shaobin Wang, a professor of chemical engineering at the University of Adelaide (Australia). “Carbon nanosprings are strong and stable enough to break these microplastics down into compounds that do not pose such a threat to the marine ecosystem.”

Although often invisible to the naked eye, microplastics are ubiquitous pollutants. Some, such as the exfoliating beads found in popular cosmetics, are simply too small to be filtered out during industrial water treatment. Others are produced indirectly, when larger debris like soda bottles or tires weather amid sun and sand.

To decompose the microplastics, the researchers had to generate short-lived chemicals called reactive oxygen species, which trigger chain reactions that chop the various long molecules that make up microplastics into tiny and harmless segments that dissolve in water. However, reactive oxygen species are often produced using heavy metals such as iron or cobalt, which are dangerous pollutants in their own right and thus unsuitable in an environmental context.

To get around this challenge, the researchers found a greener solution in the form of carbon nanotubes laced with nitrogen to help boost generation of reactive oxygen species. Shaped like springs, the carbon nanotube catalysts removed a significant fraction of microplastics in just eight hours while remaining stable themselves in the harsh oxidative conditions needed for microplastics breakdown. The coiled shape increases stability and maximises reactive surface area. As a bonus, by including a small amount of manganese, buried far from the surface of the nanotubes to prevent it from leaching into water, the minute springs became magnetic.

“Having magnetic nanotubes is particularly exciting because this makes it easy to collect them from real wastewater streams for repeated use in environmental remediation,” says Xiaoguang Duan, a chemical engineering research fellow at Adelaide who also co-led the project.

As no two microplastics are chemically quite the same, the researchers’ next steps will center on ensuring that the nanosprings work on microplastics of different compositions, shapes and origins. They also intend to continue to rigorously confirm the non-toxicity of any chemical compounds occurring as intermediates or by-products during microplastics decomposition.

The researchers also say that those intermediates and byproducts could be harnessed as an energy source for microorganisms that the polluting plastics currently plague. “If plastic contaminants can be repurposed as food for algae growth, it will be a triumph for using biotechnology to solve environmental problems in ways that are both green and cost efficient,” Wang says.

Here’s a link to and a citation for the paper,

Degradation of Cosmetic Microplastics via Functionalized Carbon Nanosprings by Jian Kang, Li Zhou, Xiaoguang Duan, Hongqi Sun, Zhimin Ao, Shaobin Wang. Matter Volume 1, Issue 3, 4 September 2019, Pages 745-758 DOI: https://doi.org/10.1016/j.matt.2019.06.004

This paper is open access.

Comments

I’m glad to see this work and as for which approach might be preferable, I don’t know if there’s a clear winner. The 2022 work removes both microplastics and pollutants in one hour! An impressive feat, which leaves us with microplastics and pollutants to deal with. By contrast , the 2019 work transforms the microplastics into materials that don’t pose harm to the aquatic environment. Great although it takes eight hours. I wish the best for all the researchers working on this microplastics problem.

Going blind when your neural implant company flirts with bankruptcy (long read)

This story got me to thinking about what happens when any kind of implant company (pacemaker, deep brain stimulator, etc.) goes bankrupt or is acquired by another company with a different business model.

As I worked on this piece, more issues were raised and the scope expanded to include prosthetics along with implants while the focus narrowed to neuro as in, neural implants and neuroprosthetics. At the same time, I found salient examples for this posting in other medical advances such as gene editing.

In sum, all references to implants and prosthetics are to neural devices and some issues are illustrated with salient examples from other medical advances (specifically, gene editing).

Definitions (for those who find them useful)

The US Food and Drug Administration defines implants and prosthetics,

Medical implants are devices or tissues that are placed inside or on the surface of the body. Many implants are prosthetics, intended to replace missing body parts. Other implants deliver medication, monitor body functions, or provide support to organs and tissues.

As for what constitutes a neural implant/neuroprosthetic, there’s this from Emily Waltz’s January 20, 2020 article (How Do Neural Implants Work? Neural implants are used for deep brain stimulation, vagus nerve stimulation, and mind-controlled prostheses) for the Institute of Electrical and Electronics Engineers (IEEE) Spectrum magazine,

A neural implant, then, is a device—typically an electrode of some kind—that’s inserted into the body, comes into contact with tissues that contain neurons, and interacts with those neurons in some way.

Now, let’s start with the recent near bankruptcy of a retinal implant company.

The company goes bust (more or less)

From a February 25, 2022 Science Friday (a National Public Radio program) posting/audio file, Note: Links have been removed,

Barbara Campbell was walking through a New York City subway station during rush hour when her world abruptly went dark. For four years, Campbell had been using a high-tech implant in her left eye that gave her a crude kind of bionic vision, partially compensating for the genetic disease that had rendered her completely blind in her 30s. “I remember exactly where I was: I was switching from the 6 train to the F train,” Campbell tells IEEE Spectrum. “I was about to go down the stairs, and all of a sudden I heard a little ‘beep, beep, beep’ sound.’”

It wasn’t her phone battery running out. It was her Argus II retinal implant system powering down. The patches of light and dark that she’d been able to see with the implant’s help vanished.

Terry Byland is the only person to have received this kind of implant in both eyes. He got the first-generation Argus I implant, made by the company Second Sight Medical Products, in his right eye in 2004, and the subsequent Argus II implant in his left 11 years later. He helped the company test the technology, spoke to the press movingly about his experiences, and even met Stevie Wonder at a conference. “[I] went from being just a person that was doing the testing to being a spokesman,” he remembers.

Yet in 2020, Byland had to find out secondhand that the company had abandoned the technology and was on the verge of going bankrupt. While his two-implant system is still working, he doesn’t know how long that will be the case. “As long as nothing goes wrong, I’m fine,” he says. “But if something does go wrong with it, well, I’m screwed. Because there’s no way of getting it fixed.”

Science Friday and the IEEE [Institute of Electrical and Electronics Engineers] Spectrum magazine collaborated to produce this story. You’ll find the audio files and the transcript of interviews with the authors and one of the implant patients in this February 25, 2022 Science Friday (a National Public Radio program) posting.

Here’s more from the February 15, 2022 IEEE Spectrum article by Eliza Strickland and Mark Harris,

Ross Doerr, another Second Sight patient, doesn’t mince words: “It is fantastic technology and a lousy company,” he says. He received an implant in one eye in 2019 and remembers seeing the shining lights of Christmas trees that holiday season. He was thrilled to learn in early 2020 that he was eligible for software upgrades that could further improve his vision. Yet in the early months of the COVID-19 pandemic, he heard troubling rumors about the company and called his Second Sight vision-rehab therapist. “She said, ‘Well, funny you should call. We all just got laid off,’ ” he remembers. She said, ‘By the way, you’re not getting your upgrades.’ ”

These three patients, and more than 350 other blind people around the world with Second Sight’s implants in their eyes, find themselves in a world in which the technology that transformed their lives is just another obsolete gadget. One technical hiccup, one broken wire, and they lose their artificial vision, possibly forever. To add injury to insult: A defunct Argus system in the eye could cause medical complications or interfere with procedures such as MRI scans, and it could be painful or expensive to remove.

The writers included some information about what happened to the business, from the February 15, 2022 IEEE Spectrum article, Note: Links have been removed,

After Second Sight discontinued its retinal implant in 2019 and nearly went out of business in 2020, a public offering in June 2021 raised US $57.5 million at $5 per share. The company promised to focus on its ongoing clinical trial of a brain implant, called Orion, that also provides artificial vision. But its stock price plunged to around $1.50, and in February 2022, just before this article was published, the company announced a proposed merger with an early-stage biopharmaceutical company called Nano Precision Medical (NPM). None of Second Sight’s executives will be on the leadership team of the new company, which will focus on developing NPM’s novel implant for drug delivery.The company’s current leadership declined to be interviewed for this article but did provide an emailed statement prior to the merger announcement. It said, in part: “We are a recognized global leader in neuromodulation devices for blindness and are committed to developing new technologies to treat the broadest population of sight-impaired individuals.”

It’s unclear what Second Sight’s proposed merger means for Argus patients. The day after the merger was announced, Adam Mendelsohn, CEO of Nano Precision Medical, told Spectrum that he doesn’t yet know what contractual obligations the combined company will have to Argus and Orion patients. But, he says, NPM will try to do what’s “right from an ethical perspective.” The past, he added in an email, is “simply not relevant to the new future.”

There may be some alternatives, from the February 15, 2022 IEEE Spectrum article (Note: Links have been removed),

Second Sight may have given up on its retinal implant, but other companies still see a need—and a market—for bionic vision without brain surgery. Paris-based Pixium Vision is conducting European and U.S. feasibility trials to see if its Prima system can help patients with age-related macular degeneration, a much more common condition than retinitis pigmentosa.

Daniel Palanker, a professor of ophthalmology at Stanford University who licensed his technology to Pixium, says the Prima implant is smaller, simpler, and cheaper than the Argus II. But he argues that Prima’s superior image resolution has the potential to make Pixium Vision a success. “If you provide excellent vision, there will be lots of patients,” he tells Spectrum. “If you provide crappy vision, there will be very few.”

Some clinicians involved in the Argus II work are trying to salvage what they can from the technology. Gislin Dagnelie, an associate professor of ophthalmology at Johns Hopkins University School of Medicine, has set up a network of clinicians who are still working with Argus II patients. The researchers are experimenting with a thermal camera to help users see faces, a stereo camera to filter out the background, and AI-powered object recognition. These upgrades are unlikely to result in commercial hardware today but could help future vision prostheses.

The writers have carefully balanced this piece so it is not an outright condemnation of the companies (Second Sight and Nano Precision), from the February 15, 2022 IEEE Spectrum article,

Failure is an inevitable part of innovation. The Argus II was an innovative technology, and progress made by Second Sight may pave the way for other companies that are developing bionic vision systems. But for people considering such an implant in the future, the cautionary tale of Argus patients left in the lurch may make a tough decision even tougher. Should they take a chance on a novel technology? If they do get an implant and find that it helps them navigate the world, should they allow themselves to depend upon it?

Abandoning the Argus II technology—and the people who use it—might have made short-term financial sense for Second Sight, but it’s a decision that could come back to bite the merged company if it does decide to commercialize a brain implant, believes Doerr.

For anyone curious about retinal implant technology (specifically the Argus II), I have a description in a June 30, 2015 posting.

Speculations and hopes for neuroprosthetics

The field of neuroprosthetics is very active. Dr Arthur Saniotis and Prof Maciej Henneberg have written an article where they speculate about the possibilities of a neuroprosthetic that may one day merge with neurons in a February 21, 2022 Nanowerk Spotlight article,

For over a generation several types of medical neuroprosthetics have been developed, which have improved the lives of thousands of individuals. For instance, cochlear implants have restored functional hearing in individuals with severe hearing impairment.

Further advances in motor neuroprosthetics are attempting to restore motor functions in tetraplegic, limb loss and brain stem stroke paralysis subjects.

Currently, scientists are working on various kinds of brain/machine interfaces [BMI] in order to restore movement and partial sensory function. One such device is the ‘Ipsihand’ that enables movement of a paralyzed hand. The device works by detecting the recipient’s intention in the form of electrical signals, thereby triggering hand movement.

Another recent development is the 12 month BMI gait neurohabilitation program that uses a visual-tactile feedback system in combination with a physical exoskeleton and EEG operated AI actuators while walking. This program has been tried on eight patients with reported improvements in lower limb movement and somatic sensation.

Surgically placed electrode implants have also reduced tremor symptoms in individuals with Parkinson’s disease.

Although neuroprosthetics have provided various benefits they do have their problems. Firstly, electrode implants to the brain are prone to degradation, necessitating new implants after a few years. Secondly, as in any kind of surgery, implanted electrodes can cause post-operative infection and glial scarring. Furthermore, one study showed that the neurobiological efficacy of an implant is dependent on the rate of speed of its insertion.

But what if humans designed a neuroprosthetic, which could bypass the medical glitches of invasive neuroprosthetics? However, instead of connecting devices to neural networks, this neuroprosthetic would directly merge with neurons – a novel step. Such a neuroprosthetic could radically optimize treatments for neurodegenerative disorders and brain injuries, and possibly cognitive enhancement [emphasis mine].

A team of three international scientists has recently designed a nanobased neuroprosthetic, which was published in Frontiers in Neuroscience (“Integration of Nanobots Into Neural Circuits As a Future Therapy for Treating Neurodegenerative Disorders“). [open access paper published in 2018]

An interesting feature of their nanobot neuroprosthetic is that it has been inspired from nature by way of endomyccorhizae – a type of plant/fungus symbiosis, which is over four hundred million years old. During endomyccorhizae, fungi use numerous threadlike projections called mycelium that penetrate plant roots, forming colossal underground networks with nearby root systems. During this process fungi take up vital nutrients while protecting plant roots from infections – a win-win relationship. Consequently, the nano-neuroprosthetic has been named ‘endomyccorhizae ligand interface’, or ‘ELI’ for short.

The Spotlight article goes on to describe how these nanobots might function. As for the possibility of cognitive enhancement, I wonder if that might come to be described as a form of ‘artificial intelligence’.

(Dr Arthur Saniotis and Prof Maciej Henneberg are both from the Department of Anthropology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences; and Biological Anthropology and Comparative Anatomy Research Unit, Adelaide Medical School, University of Adelaide. Abdul-Rahman Sawalma who’s listed as an author on the 2018 paper is from the Palestinian Neuroscience Initiative, Al-Quds University, Beit Hanina, Palestine.)

Saniotis and Henneberg’s Spotlight article presents an optimistic view of neuroprosthetics. It seems telling that they cite cochlear implants as a success story when it is viewed by many as ethically fraught (see the Cochlear implant Wikipedia entry; scroll down to ‘Criticism and controversy’).

Ethics and your implants

This is from an April 6, 2015 article by Luc Henry on technologist.eu,

Technologist: What are the potential consequences of accepting the “augmented human” in society?

Gregor Wolbring: There are many that we might not even envision now. But let me focus on failure and obsolescence [emphasis mine], two issues that are rarely discussed. What happens when the mechanisms fails in the middle of an action? Failure has hazardous consequences, but obsolescence has psychological ones. …. The constant surgical inter­vention needed to update the hardware may not be feasible. A person might feel obsolete if she cohabits with others using a newer version.

T. Are researchers working on prosthetics sometimes disconnected from reality?

G. W. Students engaged in the development of prosthetics have to learn how to think in societal terms and develop a broader perspective. Our education system provides them with a fascination for clever solutions to technological challenges but not with tools aiming at understanding the consequences, such as whether their product might increase or decrease social justice.

Wolbring is a professor at the University of Calgary’s Cumming School of Medicine (profile page) who writes on social issues to do with human enhancement/ augmentation. As well,

Some of his areas of engagement are: ability studies including governance of ability expectations, disability studies, governance of emerging and existing sciences and technologies (e.g. nanoscale science and technology, molecular manufacturing, aging, longevity and immortality, cognitive sciences, neuromorphic engineering, genetics, synthetic biology, robotics, artificial intelligence, automatization, brain machine interfaces, sensors), impact of science and technology on marginalized populations, especially people with disabilities he governance of bodily enhancement, sustainability issues, EcoHealth, resilience, ethics issues, health policy issues, human rights and sport.

He also maintains his own website here.

Not just startups

I’d classify Second Sight as a tech startup company and they have a high rate of failure, which may not have been clear to the patients who had the implants. Clinical trials can present problems too as this excerpt from my September 17, 2020 posting notes,

This October 31, 2017 article by Emily Underwood for Science was revelatory,

“In 2003, neurologist Helen Mayberg of Emory University in Atlanta began to test a bold, experimental treatment for people with severe depression, which involved implanting metal electrodes deep in the brain in a region called area 25 [emphases mine]. The initial data were promising; eventually, they convinced a device company, St. Jude Medical in Saint Paul, to sponsor a 200-person clinical trial dubbed BROADEN.

This month [October 2017], however, Lancet Psychiatry reported the first published data on the trial’s failure. The study stopped recruiting participants in 2012, after a 6-month study in 90 people failed to show statistically significant improvements between those receiving active stimulation and a control group, in which the device was implanted but switched off.

… a tricky dilemma for companies and research teams involved in deep brain stimulation (DBS) research: If trial participants want to keep their implants [emphases mine], who will take responsibility—and pay—for their ongoing care? And participants in last week’s meeting said it underscores the need for the growing corps of DBS researchers to think long-term about their planned studies.”

Symbiosis can be another consequence, as mentioned in my September 17, 2020 posting,

From a July 24, 2019 article by Liam Drew for Nature Outlook: The brain,

“It becomes part of you,” Patient 6 said, describing the technology that enabled her, after 45 years of severe epilepsy, to halt her disabling seizures. Electrodes had been implanted on the surface of her brain that would send a signal to a hand-held device when they detected signs of impending epileptic activity. On hearing a warning from the device, Patient 6 knew to take a dose of medication to halt the coming seizure.

“You grow gradually into it and get used to it, so it then becomes a part of every day,” she told Frederic Gilbert, an ethicist who studies brain–computer interfaces (BCIs) at the University of Tasmania in Hobart, Australia. “It became me,” she said. [emphasis mine]

Symbiosis is a term, borrowed from ecology, that means an intimate co-existence of two species for mutual advantage. As technologists work towards directly connecting the human brain to computers, it is increasingly being used to describe humans’ potential relationship with artificial intelligence. [emphasis mine]

It’s complicated

For a lot of people these devices are or could be life-changing. At the same time, there are a number of different issues related to implants/prosthetics; the following is not an exhaustive list. As Wolbring notes, issues that we can’t begin to imagine now are likely to emerge as these medical advances become more ubiquitous.

Ability/disability?

Assistive technologies are almost always portrayed as helpful. For example, a cochlear implant gives people without hearing the ability to hear. The assumption is that this is always a good thing—unless you’re a deaf person who wants to define the problem a little differently. Who gets to decide what is good and ‘normal’ and what is desirable?

While the cochlear implant is the most extreme example I can think of, there are variations of these questions throughout the ‘disability’ communities.

Also, as Wolbring notes in his interview with the Technologist.eu, the education system tends to favour technological solutions which don’t take social issues into account. Wolbring cites social justice issues when he mentions failure and obsolescence.

Technical failures and obsolescence

The story, excerpted earlier in this posting, opened with a striking example of a technical failure at an awkward moment; a blind woman depending on her retinal implant loses all sight as she maneuvers through a subway station in New York City.

Aside from being an awful way to find out the company supplying and supporting your implant is in serious financial trouble and can’t offer assistance or repair, the failure offers a preview of what could happen as implants and prosthetics become more commonly used.

Keeping up/fomo (fear of missing out)/obsolescence

It used to be called ‘keeping up with the Joneses, it’s the practice of comparing yourself and your worldly goods to someone else(‘s) and then trying to equal what they have or do better. Usually, people want to have more and better than the mythical Joneses.

These days, the phenomenon (which has been expanded to include social networking) is better known as ‘fomo’ or fear of missing out (see the Fear of missing out Wikipedia entry).

Whatever you want to call it, humanity’s competitive nature can be seen where technology is concerned. When I worked in technology companies, I noticed that hardware and software were sometimes purchased for features that were effectively useless to us. But, not upgrading to a newer version was unthinkable.

Call it fomo or ‘keeping up with the Joneses’, it’s a powerful force and when people (and even companies) miss out or can’t keep up, it can lead to a sense of inferiority in the same way that having an obsolete implant or prosthetic could.

Social consequences

Could there be a neural implant/neuroprosthetic divide? There is already a digital divide (from its Wikipedia entry),

The digital divide is a gap between those who have access to new technology and those who do not … people without access to the Internet and other ICTs [information and communication technologies] are at a socio-economic disadvantage because they are unable or less able to find and apply for jobs, shop and sell online, participate democratically, or research and learn.

After reading Wolbring’s comments, it’s not hard to imagine a neural implant/neuroprosthetic divide with its attendant psychological and social consequences.

What kind of human am I?

There are other issues as noted in my September 17, 2020 posting. I’ve already mentioned ‘patient 6’, the woman who developed a symbiotic relationship with her brain/computer interface. This is how the relationship ended,

… He [Frederic Gilbert, ethicist] is now preparing a follow-up report on Patient 6. The company that implanted the device in her brain to help free her from seizures went bankrupt. The device had to be removed.

… Patient 6 cried as she told Gilbert about losing the device. … “I lost myself,” she said.

“It was more than a device,” Gilbert says. “The company owned the existence of this new person.”

Above human

The possibility that implants will not merely restore or endow someone with ‘standard’ sight or hearing or motion or … but will augment or improve on nature was broached in this May 2, 2013 posting, More than human—a bionic ear that extends hearing beyond the usual frequencies and is one of many in the ‘Human Enhancement’ category on this blog.

More recently, Hugh Herr, an Associate Professor at the Massachusetts Institute of Technology (MIT), leader of the Biomechatronics research group at MIT’s Media Lab, a double amputee, and prosthetic enthusiast, starred in the recent (February 23, 2022) broadcast of ‘Augmented‘ on the Public Broadcasting Service (PBS) science programme, Nova.

I found ‘Augmented’ a little offputting as it gave every indication of being an advertisement for Herr’s work in the form of a hero’s journey. I was not able to watch more than 10 mins. This preview gives you a pretty good idea of what it was like although the part in ‘Augmented, where he says he’d like to be a cyborg hasn’t been included,

At a guess, there were a few talking heads (taking up from 10%-20% of the running time) who provided some cautionary words to counterbalance the enthusiasm in the rest of the programme. It’s a standard approach designed to give the impression that both sides of a question are being recognized. The cautionary material is usually inserted past the 1/2 way mark while leaving several minutes at the end for returning to the more optimistic material.

In a February 2, 2010 posting I have excerpts from an article featuring quotes from Herr that I still find startling,

Written by Paul Hochman for Fast Company, Bionic Legs, iLimbs, and Other Super-Human Prostheses [ETA March 23, 2022: an updated version of the article is now on Genius.com] delves further into the world where people may be willing to trade a healthy limb for a prosthetic. From the article,

There are many advantages to having your leg amputated.

Pedicure costs drop 50% overnight. A pair of socks lasts twice as long. But Hugh Herr, the director of the Biomechatronics Group at the MIT Media Lab, goes a step further. “It’s actually unfair,” Herr says about amputees’ advantages over the able-bodied. “As tech advancements in prosthetics come along, amputees can exploit those improvements. They can get upgrades. A person with a natural body can’t.”

Herr is not the only one who favours prosthetics (also from the Hochman article),

This influx of R&D cash, combined with breakthroughs in materials science and processor speed, has had a striking visual and social result: an emblem of hurt and loss has become a paradigm of the sleek, modern, and powerful. Which is why Michael Bailey, a 24-year-old student in Duluth, Georgia, is looking forward to the day when he can amputate the last two fingers on his left hand.

“I don’t think I would have said this if it had never happened,” says Bailey, referring to the accident that tore off his pinkie, ring, and middle fingers. “But I told Touch Bionics I’d cut the rest of my hand off if I could make all five of my fingers robotic.”

But Bailey is most surprised by his own reaction. “When I’m wearing it, I do feel different: I feel stronger. As weird as that sounds, having a piece of machinery incorporated into your body, as a part of you, well, it makes you feel above human.[emphasis mine] It’s a very powerful thing.”

My September 17, 2020 posting touches on more ethical and social issues including some of those surrounding consumer neurotechnologies or brain-computer interfaces (BCI). Unfortunately, I don’t have space for these issues here.

As for Paul Hochman’s article, Bionic Legs, iLimbs, and Other Super-Human Prostheses, now on Genius.com, it has been updated.

Money makes the world go around

Money and business practices have been indirectly referenced (for the most part) up to now in this posting. The February 15, 2022 IEEE Spectrum article and Hochman’s article, Bionic Legs, iLimbs, and Other Super-Human Prostheses, cover two aspects of the money angle.

In the IEEE Spectrum article, a tech start-up company, Second Sight, ran into financial trouble and is acquired by a company that has no plans to develop Second Sight’s core technology. The people implanted with the Argus II technology have been stranded as were ‘patient 6’ and others participating in the clinical trial described in the July 24, 2019 article by Liam Drew for Nature Outlook: The brain mentioned earlier in this posting.

I don’t know anything about the business bankruptcy mentioned in the Drew article but one of the business problems described in the IEEE Spectrum article suggests that Second Sight was founded before answering a basic question, “What is the market size for this product?”

On 18 July 2019, Second Sight sent Argus patients a letter saying it would be phasing out the retinal implant technology to clear the way for the development of its next-generation brain implant for blindness, Orion, which had begun a clinical trial with six patients the previous year. …

“The leadership at the time didn’t believe they could make [the Argus retinal implant] part of the business profitable,” Greenberg [Robert Greenberg, Second Sight co-founder] says. “I understood the decision, because I think the size of the market turned out to be smaller than we had thought.”

….

The question of whether a medical procedure or medicine can be profitable (or should the question be sufficiently profitable?) was referenced in my April 26, 2019 posting in the context of gene editing and personalized medicine

Edward Abrahams, president of the Personalized Medicine Coalition (US-based), advocates for personalized medicine while noting in passing, market forces as represented by Goldman Sachs in his May 23, 2018 piece for statnews.com (Note: A link has been removed),

Goldman Sachs, for example, issued a report titled “The Genome Revolution.” It argues that while “genome medicine” offers “tremendous value for patients and society,” curing patients may not be “a sustainable business model.” [emphasis mine] The analysis underlines that the health system is not set up to reap the benefits of new scientific discoveries and technologies. Just as we are on the precipice of an era in which gene therapies, gene-editing, and immunotherapies promise to address the root causes of disease, Goldman Sachs says that these therapies have a “very different outlook with regard to recurring revenue versus chronic therapies.”

The ‘Glybera’ story in my July 4, 2019 posting (scroll down about 40% of the way) highlights the issue with “recurring revenue versus chronic therapies,”

Kelly Crowe in a November 17, 2018 article for the CBC (Canadian Broadcasting Corporation) news writes about Glybera,

It is one of this country’s great scientific achievements.

“The first drug ever approved that can fix a faulty gene.

It’s called Glybera, and it can treat a painful and potentially deadly genetic disorder with a single dose — a genuine made-in-Canada medical breakthrough.

But most Canadians have never heard of it.

Here’s my summary (from the July 4, 2019 posting),

It cost $1M for a single treatment and that single treatment is good for at least 10 years.

Pharmaceutical companies make their money from repeated use of their medicaments and Glybera required only one treatment so the company priced it according to how much they would have gotten for repeated use, $100,000 per year over a 10 year period. The company was not able to persuade governments and/or individuals to pay the cost

In the end, 31 people got the treatment, most of them received it for free through clinical trials.

For rich people only?

Megan Devlin’s March 8, 2022 article for the Daily Hive announces a major research investment into medical research (Note: A link has been removed),

Vancouver [Canada] billionaire Chip Wilson revealed Tuesday [March 8, 2022] that he has a rare genetic condition that causes his muscles to waste away, and announced he’s spending $100 million on research to find a cure.

His condition is called facio-scapulo-humeral muscular dystrophy, or FSHD for short. It progresses rapidly in some people and more slowly in others, but is characterized by progressive muscle weakness starting the the face, the neck, shoulders, and later the lower body.

“I’m out for survival of my own life,” Wilson said.

“I also have the resources to do something about this which affects so many people in the world.”

Wilson hopes the $100 million will produce a cure or muscle-regenerating treatment by 2027.

“This could be one of the biggest discoveries of all time, for humankind,” Wilson said. “Most people lose muscle, they fall, and they die. If we can keep muscle as we age this can be a longevity drug like we’ve never seen before.”

According to rarediseases.org, FSHD affects between four and 10 people out of every 100,000 [emphasis mine], Right now, therapies are limited to exercise and pain management. There is no way to stall or reverse the disease’s course.

Wilson is best known for founding athleisure clothing company Lululemon. He also owns the most expensive home in British Columbia, a $73 million mansion in Vancouver’s Kitsilano neighbourhood.

Let’s see what the numbers add up to,

4 – 10 people out of 100,000

40 – 100 people out of 1M

1200 – 3,000 people out of 30M (let’s say this is Canada’s population)\

12,000 – 30,000 people out of 300M (let’s say this is the US’s population)

42,000 – 105,000 out of 1.115B (let’s say this is China’s population)

The rough total comes to 55,200 to 138,000 people between three countries with a combined population total of 1.445B. Given how business currently operates, it seems unlikely that any company will want to offer Wilson’s hoped for medical therapy although he and possibly others may benefit from a clinical trial.

Should profit or wealth be considerations?

The stories about the patients with the implants and the patients who need Glybera are heartbreaking and point to a question not often asked when medical therapies and medications are developed. Is the profit model the best choice and, if so, how much profit?

I have no answer to that question but I wish it was asked by medical researchers and policy makers.

As for wealthy people dictating the direction for medical research, I don’t have answers there either. I hope the research will yield applications and/or valuable information for more than Wilson’s disease.

It’s his money after all

Wilson calls his new venture, SolveFSHD. It doesn’t seem to be affiliated with any university or biomedical science organization and it’s not clear how the money will be awarded (no programmes, no application procedure, no panel of experts). There are three people on the team, Eva R. Chin, scientist and executive director, Chip Wilson, SolveFSHD founder/funder, and FSHD patient, and Neil Camarta, engineer, executive (fossil fuels and clean energy), and FSHD patient. There’s also a Twitter feed (presumably for the latest updates): https://twitter.com/SOLVEFSHD.

Perhaps unrelated but intriguing is news about a proposed new building in Kenneth Chan’s March 31, 2022 article for the Daily Hive,

Low Tide Properties, the real estate arm of Lululemon founder Chip Wilson [emphasis mine], has submitted a new development permit application to build a 148-ft-tall, eight-storey, mixed-use commercial building in the False Creek Flats of Vancouver.

The proposal, designed by local architectural firm Musson Cattell Mackey Partnership, calls for 236,000 sq ft of total floor area, including 105,000 sq ft of general office space, 102,000 sq ft of laboratory space [emphasis mine], and 5,000 sq ft of ground-level retail space. An outdoor amenity space for building workers will be provided on the rooftop.

[next door] The 2001-built, five-storey building at 1618 Station Street immediately to the west of the development site is also owned by Low Tide Properties [emphasis mine]. The Ferguson, the name of the existing building, contains about 79,000 sq ft of total floor area, including 47,000 sq ft of laboratory space and 32,000 sq ft of general office space. Biotechnology company Stemcell technologies [STEMCELL] Technologies] is the anchor tenant [emphasis mine].

I wonder if this proposed new building will house SolveFSHD and perhaps other FSHD-focused enterprises. The proximity of STEMCELL Technologies could be quite convenient. In any event, $100M will buy a lot (pun intended).

The end

Issues I’ve described here in the context of neural implants/neuroprosthetics and cutting edge medical advances are standard problems not specific to these technologies/treatments:

  • What happens when the technology fails (hopefully not at a critical moment)?
  • What happens when your supplier goes out of business or discontinues the products you purchase from them?
  • How much does it cost?
  • Who can afford the treatment/product? Will it only be for rich people?
  • Will this technology/procedure/etc. exacerbate or create new social tensions between social classes, cultural groups, religious groups, races, etc.?

Of course, having your neural implant fail suddenly in the middle of a New York City subway station seems a substantively different experience than having your car break down on the road.

There are, of course, there are the issues we can’t yet envision (as Wolbring notes) and there are issues such as symbiotic relationships with our implants and/or feeling that you are “above human.” Whether symbiosis and ‘implant/prosthetic superiority’ will affect more than a small number of people or become major issues is still to be determined.

There’s a lot to be optimistic about where new medical research and advances are concerned but I would like to see more thoughtful coverage in the media (e.g., news programmes and documentaries like ‘Augmented’) and more thoughtful comments from medical researchers.

Of course, the biggest issue I’ve raised here is about the current business models for health care products where profit is valued over people’s health and well-being. it’s a big question and I don’t see any definitive answers but the question put me in mind of this quote (from a September 22, 2020 obituary for US Supreme Court Justice Ruth Bader Ginsburg by Irene Monroe for Curve),

Ginsburg’s advocacy for justice was unwavering and showed it, especially with each oral dissent. In another oral dissent, Ginsburg quoted a familiar Martin Luther King Jr. line, adding her coda:” ‘The arc of the universe is long, but it bends toward justice,’” but only “if there is a steadfast commitment to see the task through to completion.” …

Martin Luther King Jr. popularized and paraphrased the quote (from a January 18, 2018 article by Mychal Denzel Smith for Huffington Post),

His use of the quote is best understood by considering his source material. “The arc of the moral universe is long, but it bends toward justice” is King’s clever paraphrasing of a portion of a sermon delivered in 1853 by the abolitionist minister Theodore Parker. Born in Lexington, Massachusetts, in 1810, Parker studied at Harvard Divinity School and eventually became an influential transcendentalist and minister in the Unitarian church. In that sermon, Parker said: “I do not pretend to understand the moral universe. The arc is a long one. My eye reaches but little ways. I cannot calculate the curve and complete the figure by experience of sight. I can divine it by conscience. And from what I see I am sure it bends toward justice.”

I choose to keep faith that people will get the healthcare products they need and that all of us need to keep working at making access more fair.

Luminescent upconversion nanoparticles could make imaging more efficient

Researchers at the University of Adelaide (Australia) have found a way to embed luminiscent nanoparticles in glass, according to a June 8, 2016 news item on Nanotechnology,

This new “hybrid glass” successfully combines the properties of these special luminescent (or light-emitting) nanoparticles with the well-known aspects of glass, such as transparency and the ability to be processed into various shapes including very fine optical fibres.

The research, in collaboration with Macquarie University and University of Melbourne, has been published online in the journal Advanced Optical Materials.

A June 7, 2016 University of Adelaide press release (also on EurekAlert), which originated the news item, offers more detail,

“These novel luminescent nanoparticles, called upconversion nanoparticles, have become promising candidates for a whole variety of ultra-high tech applications such as biological sensing, biomedical imaging and 3D volumetric displays,” says lead author Dr Tim Zhao, from the University of Adelaide’s School of Physical Sciences and Institute for Photonics and Advanced Sensing (IPAS).

“Integrating these nanoparticles into glass, which is usually inert, opens up exciting possibilities for new hybrid materials and devices that can take advantage of the properties of nanoparticles in ways we haven’t been able to do before. For example, neuroscientists currently use dye injected into the brain and lasers to be able to guide a glass pipette to the site they are interested in. If fluorescent nanoparticles were embedded in the glass pipettes, the unique luminescence of the hybrid glass could act like a torch to guide the pipette directly to the individual neurons of interest.”

Although this method was developed with upconversion nanoparticles, the researchers believe their new ‘direct-doping’ approach can be generalised to other nanoparticles with interesting photonic, electronic and magnetic properties. There will be many applications – depending on the properties of the nanoparticle.

“If we infuse glass with a nanoparticle that is sensitive to radiation and then draw that hybrid glass into a fibre, we could have a remote sensor suitable for nuclear facilities,” says Dr Zhao.

To date, the method used to integrate upconversion nanoparticles into glass has relied on the in-situ growth of the nanoparticles within the glass.

“We’ve seen remarkable progress in this area but the control over the nanoparticles and the glass compositions has been limited, restricting the development of many proposed applications,” says project leader Professor Heike Ebendorff-Heideprem, Deputy Director of IPAS.

“With our new direct doping method, which involves synthesizing the nanoparticles and glass separately and then combining them using the right conditions, we’ve been able to keep the nanoparticles intact and well dispersed throughout the glass. The nanoparticles remain functional and the glass transparency is still very close to its original quality. We are heading towards a whole new world of hybrid glass and devices for light-based technologies.”

Here’s a link to and a citation for the paper,

Upconversion Nanocrystal-Doped Glass: A New Paradigm for Photonic Materials by Jiangbo Zhao, Xianlin Zheng, Erik P. Schartner, Paul Ionescu, Run Zhang, Tich-Lam Nguyen, Dayong Jin, and Heike Ebendorff-Heidepriem. Advanced Optical Materials DOI: 10.1002/adom.201600296 Version of Record online: 30 MAY 2016

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

This paper is behind a paywall.

Australians take step toward ‘smart’ contact lenses

Some research from RMIT University (Australia) and the University of Adelaide (Australia) is make quite an impression. A Feb. 19, 2016 article by Caleb Radford for The Lead explains some of the excitement,

NEW light-manipulating nano-technology may soon be used to make smart contact lenses.

The University of Adelaide in South Australia worked closely with RMIT University to develop small hi-tech lenses to filter harmful optical radiation without distorting vision.

Dr Withawat Withayachumnankul from the University of Adelaide helped conceive the idea and said the potential applications of the technology included creating new high-performance devices that connect to the Internet.

A Feb. 19, 2016 RMIT University press release on EurekAlert, which originated the news item, provides more detail,

The light manipulation relies on creating tiny artificial crystals termed “dielectric resonators”, which are a fraction of the wavelength of light – 100-200 nanometers, or over 500 times thinner than a human hair.

The research combined the University of Adelaide researchers’ expertise in interaction of light with artificial materials with the materials science and nanofabrication expertise at RMIT University.

Dr Withawat Withayachumnankul, from the University of Adelaide’s School of Electrical and Electronic Engineering, said: “Manipulation of light using these artificial crystals uses precise engineering.

“With advanced techniques to control the properties of surfaces, we can dynamically control their filter properties, which allow us to potentially create devices for high data-rate optical communication or smart contact lenses.

“The current challenge is that dielectric resonators only work for specific colours, but with our flexible surface we can adjust the operation range simply by stretching it.”

Associate Professor Madhu Bhaskaran, Co-Leader of the Functional Materials and Microsystems Research Group at RMIT, said the devices were made on a rubber-like material used for contact lenses.

“We embed precisely-controlled crystals of titanium oxide, a material that is usually found in sunscreen, in these soft and pliable materials,” she said.

“Both materials are proven to be bio-compatible, forming an ideal platform for wearable optical devices.

“By engineering the shape of these common materials, we can create a device that changes properties when stretched. This modifies the way the light interacts with and travels through the device, which holds promise of making smart contact lenses and stretchable colour changing surfaces.”

Lead author and RMIT researcher Dr. Philipp Gutruf said the major scientific hurdle overcome by the team was combining high temperature processed titanium dioxide with the rubber-like material, and achieving nanoscale features.

“With this technology, we now have the ability to develop light weight wearable optical components which also allow for the creation of futuristic devices such as smart contact lenses or flexible ultra thin smartphone cameras,” Gutruf said.

Here’s a link to and a citation for the paper,

Mechanically Tunable Dielectric Resonator Metasurfaces at Visible Frequencies by Philipp Gutruf, Chengjun Zou, Withawat Withayachumnankul, Madhu Bhaskaran, Sharath Sriram, and Christophe Fumeaux. ACS Nano, 2016, 10 (1), pp 133–141 DOI: 10.1021/acsnano.5b05954 Publication Date (Web): November 30, 2015

Copyright © 2015 American Chemical Society

This paper is behind a paywall.

ETA Feb. 24, 2016: Dexter Johnson (Nanoclast blog on the IEEE [Institute of Electrical and Electronics Engineers] website) has chimed in with additional insight into this research in his Feb. 23, 2016 posting.

Sunscreen based on algae, reef fish mucus, and chitosan

The proposed sunscreen is all natural and would seem to avoid some of the environmental problems associated with other sunscreens (e.g., washing off into the ocean and polluting it). From a July 29, 2015 American Chemical Society (ACS) news release (also on EurekAlert), Note: Links have been removed,

For consumers searching for just the right sunblock this summer, the options can be overwhelming. But scientists are now turning to the natural sunscreen of algae — which is also found in fish slime — to make a novel kind of shield against the sun’s rays that could protect not only people, but also textiles and outdoor materials. …

Existing sunblock lotions typically work by either absorbing ultraviolet rays or physically blocking them. A variety of synthetic and natural compounds can accomplish this. But most commercial options have limited efficiency, pose risks to the environment and human health or are not stable. To address these shortcomings, Vincent Bulone, Susana C. M. Fernandes and colleagues looked to nature for inspiration.

The researchers used algae’s natural sunscreen molecules, which can also be found in reef fish mucus and microorganisms, and combined them with chitosan, a biopolymer from crustacean shells. Testing showed their materials were biocompatible, stood up well in heat and light, and absorbed both ultraviolet A and ultraviolet B radiation with high efficiency.

The authors acknowledge funding from the European Commission Marie Curie Intra-European Fellowship, the KTH Advanced Carbohydrate Materials Consortium (CarboMat), the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS) and the Basque Government Department of Education.

Here’s a link to and a citation for the paper,

Exploiting Mycosporines as Natural Molecular Sunscreens for the Fabrication of UV-Absorbing Green Material by Susana C. M. Fernandes, Ana Alonso-Varona, Teodoro Palomares, Verónica Zubillaga, Jalel Labidi, and Vincent Bulone.
ACS Appl. Mater. Interfaces, Article ASAP DOI: 10.1021/acsami.5b04064 Publication Date (Web): July 13, 2015
Copyright © 2015 American Chemical Society

This paper is behind a paywall.

Gold detection down to the nanoparticle?

It appears that detecting gold, presumably for mining purposes, isn’t as easy as one might think especially at the nanoscale. Researchers at Australia’s University of Adelaide have devised a new method according to an April 29, 2015 news item on Nanowerk (Note: A link has been removed),

University of Adelaide researchers are developing a portable, highly sensitive method for gold detection that would allow mineral exploration companies to test for gold on-site at the drilling rig.

Using light in two different processes (fluorescence and absorption), the researchers from the University’s Institute for Photonics and Advanced Sensing (IPAS), have been able to detect gold nanoparticles at detection limits 100 times lower than achievable under current methods.

An April 29, 2015 University of Adelaide news release details Australia’s interest in gold and offers a high level explanation of the need for better gold detection (Note: Links have been removed),

Australia is the world’s second largest gold producer, worth $13 billion in export earnings.

“Gold is not just used for jewellery, it is in high demand for electronics and medical applications around the world, but exploration for gold is extremely challenging with a desire to detect very low concentrations of gold in host rocks,” says postdoctoral researcher Dr Agnieszka Zuber, working on the project with Associate Professor Heike Ebendorff-Heidepriem.

“The presence of gold deep underground is estimated by analysis of rock particles coming out of the drilling holes. But current portable methods for detection are not sensitive enough, and the more sensitive methods require some weeks before results are available.

“This easy-to-use sensor will allow fast detection right at the drill rig with the amount of gold determined within an hour, at much lower cost.”

The researchers have been able to detect less than 100 parts per billion of gold in water. They are now testing using samples of real rock with initial promising results. The work is funded by the Deep Exploration Technologies Cooperative Research Centre.

The gold detection project is one of a series of projects which will be presented at the IPAS Minerals and Energy Sector Workshop today [April 29, 2015], aimed at linking resources specific research to local companies.

You can find out more about the University of Adelaide’s Institute of Photonics and Advanced Sensing here.

Australians protect grain with diatoms (Nature’s nanofabrication factories)

A Feb. 5, 2014 news item on Nanowerk highlights a presentation about protecting grain from insects given at the  ICONN2014-ACMM23 conference for nanoscience and microscopy held Feb. 3 -6, 2014 at the University of Adelaide (Australia). From the news item,

University of Adelaide researchers are using nanotechnology and the fossils of single-celled algae to develop a novel chemical-free and resistance-free way of protecting stored grain from insects.

The researchers are taking advantage of the unique properties of these single-celled algae, called diatoms. Diatoms have been called Nature’s nanofabrication factories because of their production of tiny (nanoscale) structures made from silica which have a range of properties of potential interest for nanotechnology.

“One area of our research is focussed on transforming this cheap diatom silica, readily available as a by-product of mining, into valuable nanomaterials for diverse applications – one of which is pest control,” says Professor Dusan Losic, ARC Future Fellow in the University’s School of Chemical Engineering.

The Feb. 5, 2014 University of Adelaide media release, which originated the news item, provides more insight into the research,

“There are two looming issues for the world-wide protection against insect pests of stored grain: firstly, the development of resistance by many species to conventional pest controls – insecticides and the fumigant phosphine – and, secondly, the increasing consumer demand for residue-free grain products and food,” Professor Losic says.

“In the case of Australia, we export grain worth about $8 billion each year – about 25 million tonnes – which could be under serious threat. We urgently need to find alternative methods for stored grain protection which are ecologically sound and resistance-free.”

The researchers are using a natural, non-toxic silica material based on the ‘diatomaceous earths’ formed by the fossilisation of diatoms. The material disrupts the insect’s protective cuticle, causing the insect to dehydrate.

“This is a natural and non-toxic material with a significant advantage being that, as only a physical mode of action is involved, the insects won’t develop resistance,” says Professor Losic. [emphasis mine]

“Equally important is that it is environmentally stable with high insecticidal activity for a long period of time. Therefore, stored products can be protected for longer periods of time without the need for frequent re-application.”

PhD student Sheena Chen is presenting her findings on the insecticidal activity of the material. PhD student John Hayles is also working on the project. The research is funded by the Grains Research and Development Corporation. The researchers are in the final stages of optimising the formula of the material.

This work be may of interest to Canadian farmers especially since 2013 featured the largest wheat and canola harvests in Canadian history according to a Dec. 4, 2013 article by Terryn Shiells for AgCanada.com,

“There’s just no getting around it, this is the biggest crop of Canadian history and it’s basically a shocker all around,” said Mike Jubinville of ProFarmer Canada in Winnipeg. “I really can’t think of a crop, other than peas and lentils, that didn’t provide an upside that betters what trade expectations were.”

Because all of the crops are so huge, it won’t be possible to move the entire crop this year, Jubinville said.

“We’re going to argue all we want about rail car allocations, about slow deliverable opportunities, but there’s just no way that the Canadian commercial handling system can move this crop,” he said.

Because there just isn’t enough capacity to get everything moved this year, there will also likely be larger than anticipated carryover stocks of all crops.

I imagine these bumper crops will mean there are storage issues which brings this piece back to the Australians and their work on preserving stored grain by using diatoms and silica material.  Perhaps Canadian farmers would like to test this “new natural and non-toxic material” once the formula has been optimized.