Tag Archives: Ars Scientia’s Quantum Studio Art/Science Residency with Nadia Lichtig at the University of British Columbia (UBC)

Weird things you can turn into a memristor

Perry Thaler’s November 27, 2025 article on unusual sources for memristors was published in the IEEE Spectrum magazine, Note: Links have been removed,

Source images: iStock [downloaded from https://spectrum.ieee.org/memristor-materials]

From the honey in your tea to the blood in your veins, materials all around you have a hidden talent. Some of these substances, when engineered in specific ways, can act as memristors—electrical components that can “remember” past states.

Memristors are often used in chips that both perform computations and store data. They are devices that store data as particular levels of resistance. Today, they are constructed as a thin layer of titanium dioxide or similar dielectric material sandwiched between two metal electrodes. Applying enough voltage to the device causes tiny regions in the dielectric layer—where oxygen atoms are missing—to form filaments that bridge the electrodes or otherwise move in a way that makes the layer more conductive. Reversing the voltage undoes the process. Thus, the process essentially gives the memristor a memory of past electrical activity.

Last month [October 2025], while exploring the electrical properties of fungi, a group at The Ohio State University found first-hand that some organic memristors have benefits beyond those made with conventional materials. Not only can shiitake [mushrooms] act as a memristor, for example, but it may be useful in aerospace or medical applications because the fungus demonstrates high levels of radiation resistance. The project “really mushroomed into something cool,” lead researcher John LaRocco says with a smirk.

Researchers have learned that other unexpected materials may give memristors an edge. They may be more flexible than typical memristors or even biodegradable. Here’s how they’ve made memristors from strange materials, and the potential benefits these odd devices could bring.

Mushrooms

LaRocco and his colleagues were searching for a proxy for brain circuitry to use in electrical stimulation research when they stumbled upon something interesting—shiitake mushrooms are capable of learning in a way that’s similar to memristors.

…

Honey

In 2022, engineers at Washington State University interested in green electronics set out to study if honey could serve as a good memristor. “Modern electronics generate 50 million tons of e-waste annually, with only about 20 percent recycled,” says Feng Zhao, who led the work and is now at Missouri University of Science and Technology. “Honey offers a biodegradable alternative.”

…

Blood

Considering it a potential means of delivering healthcare, a group in India wondered if blood would make a good memristor in 2011, just three years after the first memristor was built.

…

Fascinating, eh?

Citations and links to the papers

Blood

Human blood liquid memristor by S.P. Kosta, Y.P. Kosta, Mukta Bhatele, Y.M. Dubey, Avinash Gaur, Shakti Kosta, Jyoti Gupta, Amit Patel and Bhavin Patel. International Journal of Medical Engineering and Informatics Vol. 3, No. 1 Published Online::March 16, 2011 pp 16-29 DOI: https://doi.org/10.1504/IJMEI.2011.039073

This is new to me. There is a No Access notice but if you click on the PDF button, you will see what appears to be a purchase option although if you check here, you’ll see it’s an Open Access Only journal.

Honey

Memristive synaptic device based on a natural organic material—honey for spiking neural network in biodegradable neuromorphic systems by Brandon Sueoka and Feng Zhao. Journal of Physics D: Applied Physics (J. Phys. D: Appl. Phys.) 2022 Volume 55, Number 22 55 225105 DOI 10.1088/1361-6463/ac585b Published 7 March 2022 • © 2022 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

This paper is behind a paywall.

I have more about this paper in a September 27, 2022 posting “Honey-based neuromorphic chips for brainlike computers?“

Mushrooms

Sustainable memristors from shiitake mycelium for high-frequency bioelectronics by John LaRocco, Qudsia Tahmina, Ruben Petreaca, John Simonis, Justin Hill. PLoS One 20 (10): e0328965. DOI: https://doi.org/10.1371/journal.pone.0328965 Published: October 10, 2025

This paper is open access.

Thaler’s November 27, 2025 article is a good and short read..

Mushrooms can also be musical

I have two stories about Tarun Nayar (Modern Biology), a musician who collaborates with mushrooms There’s my May 27, 2022 posting “The sound of the mushroom” with an embedded video and an update under the “Not quite related (mushroom music)” subhead, scroll down about 50% of the way down my October 10, 2025 posting about Ars Scientia’s Quantum Studio Art/Science Residency at the University of British Columbia.

FrogHeart’s 2025 comes to an end as 2026 comes into view

Thank you to everyone who took the time to drop in and read and/or comment on this blog, especially in times that grow ever more turbulent for all of us.

It wasn’t all ‘sturm und drang’. Aside: Much to my surprise (see Wikipedia entry) ‘storm and stress’ is a term first associated with an 18th Century German literary movement.

It’s been quite a year for the quantum science community, which appears to be getting more public attention. It’s not quite at the levels experienced by AI (artificial intelligence). but it’s getting there.

This year I’ve had a lot of art/science projects featured here. It makes me wonder if perhaps art/sci is also of rising interest.

Here’s my 2025 roundup, roughly organized by topic with a (to be expected) focus on the Canadian experience. As usual, some projects straddle two or more areas of interest, so, I’ve made some arbitrary decisions. As well, I’m trying to keep this shorter than my standard end-of-year piece. For anyone interested in the ‘nano’ aspect of this blog, either ‘nanoparticle’ or ‘nanotechnology’ searches should reward you amply.

Geopolitical tensions, the US and its science, and science fraud

Who thought Canadians would be threatened with 51st state status? Relatively mild compared to what else Donald Trump and his kakistocracy have been up to domestically and internationally. By the way, my new word of 2025 was kakistocracy, from its Wikipedia entry,

Kakistocracy (/ˌkækɪˈstɒkrəsi/ KAK-ist-OK-rə-see) is government by the worst, least qualified, or most unscrupulous people.[1]: 54 [2][3]

The word was coined as early as the 17th century[4] and derives from two Greek words, kákistos (κάκιστος, ‘worst’) and krátos (κράτος, ‘rule’), together meaning ‘government by the worst people’.[5]

…

Usage

The term is generally used by critics of a national government. It has been used variously in the past to describe the Russian governments of Boris Yeltsin and Vladimir Putin,[12] the government of Egypt under Abdel Fattah Al-Sisi,[13] governments in sub-Saharan Africa,[14] the government of the Philippines under Rodrigo Duterte,[15] Brazil under Jair Bolsonaro,[16] and the governments of some presidents of the United States.[17]

The term gained popularity during the first presidency of Donald Trump, going viral in 2017 when used by then-MSNBC host Joy Reid and again following an April 2018 tweet by former CIA director John Brennan.[4][18] The term has been used by commentators at numerous news outlets,[19][20][21] political publications,[22][23] and books to describe the Trump administration.[24][25]

…

As noted in a posting earlier in 2025 (see below for link), the Americans are desperate for resources, which can help explain at least some of the threats and hostile action toward us and others. The US signed a deal with Ukraine that featured critical minerals. Both Canada and Greenland offer critical minerals and greater control over the arctic passage .Nigeria and Venezuela are oil rich. As for Panama, presumably the focus is on easy Pacific/Atlantic passage.

The US also has a science problem that predates the current administration’s actions.

Given the well documented issues around US science funding, as well as, concerns that foreign students and researchers may have regarding current immigration policies, the Canadian federal government appears eager to provide an alternative.

I often see material on building ‘trust in science’ and material on the reverse ‘battling misinformation’.

  • This February 28, 2025 posting highlights an event about building trust in science. It also includes my comments about a medical scientific fraud, a bad apple, as it were.

Moving from ‘bad apples’ to an even more disturbing view of scientific fraud,

It’s always good to get a reminder to apply at least a little skepticism when reading about science.

Quantum

It was quite the year for quantum science.

Here’s some of what is going on in Canada.

I have a couple of the items from 2025 but you’ll find more if you search for ‘quantum’ in the blog’s search engine.

Next up is artificial intelligence (AI).

AI

China made itself felt this year.

China’s ex UK ambassador & Canada’s Yoshua Bengio tangle.

Vancouver (Canada) has an AI community and an interesting lineup of topics.

If you are looking to join up or check out Vancouver and/or BC AI communities, search on the web for “Kris Krug” who is the moving force for these initiatives.

The Phoenix Payroll implementation remains as one of the Canadian government’s greatest foul ups.

After almost 10 years, they are hopeful that AI will help them clean up the mess. Let’s hope they’re right.

By the way, do you own your thoughts?

To end this on a less ominous note, AI can be used for good.

Citizen science

This is a sampling of three of the citizen science items here.

  • “‘Extreme’ citizen science” published on January 17, 2025 was really from 2024 but the word ‘extreme’ had me hooked. Here’s what they meant, from the posting,

“Extreme citizen science is the idea that the role of a researcher becomes ever smaller. The unique and ‘extreme’ aspect is that a larger part of the research process, both fieldwork and lab work, is now handed over to high school students. We were excited to see if it would work and have now seen that it does so exceptionally well,” says project leader Anders P. Tøttrup, Associate Professor of Citizen Science at the Natural History Museum of Denmark.

…

Interesting, yes? Especially in light of this next one.

And then, never in a million years!

Selection of art/science (art/sci)

Here they are:

Odds & sods

I have two posts featuring cybersecurity in one way or another.

It’s good to see that there’s interest in protecting medical implants from cyberthreats.

I do have one nano story I want to mention.

Linguistics is a social science and it’s been observed that Canadians speak their own kind of English.

One of the more unusual communication projects that I’ve seen.

This is abut our food.

A quick internet search did not turn up any new information about gene-edited pork and its entrance into the Canadian market.

Goodbye 2025 and hello 2026

At this point I’ve decided to give in and accept that thee will always be a backlog of material from the previous year (this time, 2025) bleeding into the next (this time, 2026). In my defence, there is so much material out there I am overwhelmed with riches.

Moving on …

I see that 2025 was chock-a-block with stories about artificial intelligence, just like 2024. I don’t anticipate that will change much, just as I imagine that quantum science and quantum computing stories will continue to proliferate 2026.

While I didn’t highlight them this year, there were a lot of stories about agriculture and regenerative medicine with enabling nanotechnology. It’ll be interesting to see if that continues.

One area that offers some hope with regard to energy and to the environment and I think will become more prominent in 2026 is fusion energy (nuclear energy). For anyone not familiar with fusion energy, here’s a description from the Wikipedia entry for the largest fusion energy project in the world (ITER); Note: Links have been removed,

ITER (originally an acronym for International Thermonuclear Experimental Reactor, and also meaning “the way” or “the path” in Latin)[1][2][3] is an international nuclear fusion research and engineering project designed to demonstrate the feasibility of fusion power.

…

Fusion aims to replicate the process that takes place in stars where the intense heat at the core fuses together nuclei and produces large amounts of energy in the form of heat and light. Harnessing fusion power in terrestrial conditions would provide sufficient energy to satisfy mounting demand, and to do so in a sustainable manner that has a relatively small impact on the environment. One gram of deuterium-tritium fuel mixture in the process of nuclear fusion produces 90,000-kilowatt hours of energy, or the equivalent of 11 tonnes of coal.[30]

Nuclear fusion uses a different approach from traditional nuclear energy. Current nuclear power stations rely on nuclear fission with the nucleus of an atom being split to release energy. Nuclear fusion takes multiple nuclei and uses intense heat to fuse them together, a process that also releases energy.[31]

…

Thank you all and may you have a lovely New Year.