Category Archives: water

Nature-inspired nanotubes from the Lawrence Berkeley National* Laboratory

A March 29, 2016 news item on Nanotechnology Now  announces a new technique for nature-inspired self-assembling polymer nanotubes,

When it comes to the various nanowidgets scientists are developing, nanotubes are especially intriguing. That’s because hollow tubes that have diameters of only a few billionths of a meter have the potential to be incredibly useful, from delivering cancer-fighting drugs inside cells to desalinating seawater.

But building nanostructures is difficult. And creating a large quantity of nanostructures with the same trait, such as millions of nanotubes with identical diameters, is even more difficult. This kind of precision manufacturing is needed to create the nanotechnologies of tomorrow.

Help could be on the way. As reported online the week of March 28 [2016] in the journal Proceedings of the National Academy of Sciences [PNAS], researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have discovered a family of nature-inspired polymers that, when placed in water, spontaneously assemble into hollow crystalline nanotubes. What’s more, the nanotubes can be tuned to all have the same diameter of between five and ten nanometers, depending on the length of the polymer chain.

A March 28, 2016 Berkeley Lab news release (also on EurekAlert), which originated the news item, provides more detail,

The polymers have two chemically distinct blocks that are the same size and shape. The scientists learned these blocks act like molecular tiles that form rings, which stack together to form nanotubes up to 100 nanometers long, all with the same diameter.

“This points to a new way we can use synthetic polymers to create complex nanostructures in a very precise way,” says Ron Zuckermann, who directs the Biological Nanostructures Facility in Berkeley Lab’s Molecular Foundry, where much of this research was conducted.

Several other Berkeley Lab scientists contributed to this research, including Nitash Balsara of the Materials Sciences Division and Ken Downing of the Molecular Biophysics and Integrated Bioimaging Division.

“Creating uniform structures in high yield is a goal in nanotechnology,” adds Zuckermann. “For example, if you can control the diameter of nanotubes, and the chemical groups exposed in their interior, then you can control what goes through—which could lead to new filtration and desalination technologies, to name a few examples.”

The research is the latest in the effort to build nanostructures that approach the complexity and function of nature’s proteins, but are made of durable materials. In this work, the Berkeley Lab scientists studied a polymer that is a member of the peptoid family. Peptoids are rugged synthetic polymers that mimic peptides, which nature uses to form proteins. They can be tuned at the atomic scale to carry out specific functions.

For the past several years, the scientists have studied a particular type of peptoid, called a diblock copolypeptoid, because it binds with lithium ions and could be used as a battery electrolyte. Along the way, they serendipitously found the compounds form nanotubes in water. How exactly these nanotubes form has yet to be determined, but this latest research sheds light on their structure, and hints at a new design principle that could be used to build nanotubes and other complex nanostructures.

Diblock copolypeptoids are composed of two peptoid blocks, one that’s hydrophobic one that’s hydrophilic. The scientists discovered both blocks crystallize when they meet in water, and form rings consisting of two to three individual peptoids. The rings then form hollow nanotubes.

Cryo-electron microscopy imaging of 50 of the nanotubes showed the diameter of each tube is highly uniform along its length, as well as from tube to tube. This analysis also revealed a striped pattern across the width of the nanotubes, which indicates the rings stack together to form tubes, and rules out other packing arrangements. In addition, the peptoids are thought to arrange themselves in a brick-like pattern, with hydrophobic blocks lining up with other hydrophobic blocks, and the same for hydrophilic blocks.

“Images of the tubes captured by electron microscopy were essential for establishing the presence of this unusual structure,” says Balsara. “The formation of tubular structures with a hydrophobic core is common for synthetic polymers dispersed in water, so we were quite surprised to see the formation of hollow tubes without a hydrophobic core.”

X-ray scattering analyses conducted at beamline 7.3.3 of the Advanced Light Source revealed even more about the nanotubes’ structure. For example, it showed that one of the peptoid blocks, which is usually amorphous, is actually crystalline.

Remarkably, the nanotubes assemble themselves without the usual nano-construction aids, such as electrostatic interactions or hydrogen bond networks.

“You wouldn’t expect something as intricate as this could be created without these crutches,” says Zuckermann. “But it turns out the chemical interactions that hold the nanotubes together are very simple. What’s special here is that the two peptoid blocks are chemically distinct, yet almost exactly the same size, which allows the chains to pack together in a very regular way. These insights could help us design useful nanotubes and other structures that are rugged and tunable—and which have uniform structures.”

This cryo-electron microscopy image shows the self-assembling nanotubes have the same diameter. The circles are head-on views of nanotubes. The dark-striped features likely result from crystallized peptoid blocks. (Credit: Berkeley Lab)

This cryo-electron microscopy image shows the self-assembling nanotubes have the same diameter. The circles are head-on views of nanotubes. The dark-striped features likely result from crystallized peptoid blocks. (Credit: Berkeley Lab)

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

Self-assembly of crystalline nanotubes from monodisperse amphiphilic diblock copolypeptoid tiles by Jing Sun, Xi Jiang, Reidar Lund, Kenneth H. Downing, Nitash P. Balsara, and Ronald N. Zuckermann. PNAS 2016 ; published ahead of print March 28, 2016, doi: 10.1073/pnas.1517169113

This paper is behind a paywall.

*’Lawrence Berkeley Laboratory’ changed to ‘Lawrence Berkeley National Laboratory’ on April 3, 2016.

US Nanotechnology Initiative for water sustainability

Wednesday, March 23, 2016 was World Water Day and to coincide with that event the US National Nanotechnology Initiative (NNI) in collaboration with several other agencies announced a new ‘signature initiative’. From a March 24, 2016 news item on Nanowerk (Note: A link has been removed),

As a part of the White House Water Summit held yesterday on World Water Day, the Federal agencies participating in the National Nanotechnology Initiative (NNI) announced the launch of a Nanotechnology Signature Initiative (NSI), Water Sustainability through Nanotechnology: Nanoscale Solutions for a Global-Scale Challenge.

A March 23, 2016 NNI news release provides more information about why this initiative is important,

Access to clean water remains one of the world’s most pressing needs. As today’s White House Office of Science and Technology blog post explains, “the small size and exceptional properties of engineered nanomaterials are particularly promising for addressing the key technical challenges related to water quality and quantity.”

“One cannot find an issue more critical to human life and global security than clean, plentiful, and reliable water sources,” said Dr. Michael Meador, Director of the National Nanotechnology Coordination Office (NNCO). “Through the NSI mechanism, NNI member agencies will have an even greater ability to make meaningful strides toward this initiative’s thrust areas: increasing water availability, improving the efficiency of water delivery and use, and enabling next-generation water monitoring systems.”

A March 23, 2016 US White House blog posting by Lloyd Whitman and Lisa Friedersdorf describes the efforts in more detail (Note: A link has been removed),

The small size and exceptional properties of engineered nanomaterials are particularly promising for addressing the pressing technical challenges related to water quality and quantity. For example, the increased surface area—a cubic centimeter of nanoparticles has a surface area larger than a football field—and reactivity of nanometer-scale particles can be exploited to create catalysts for water purification that do not require rare or precious metals. And composites incorporating nanomaterials such as carbon nanotubes might one day enable stronger, lighter, and more durable piping systems and components. Under this NSI, Federal agencies will coordinate and collaborate to more rapidly develop nanotechnology-enabled solutions in three main thrusts: [thrust 1] increasing water availability; [thrust 2] improving the efficiency of water delivery and use; and [thrust 3] enabling next-generation water monitoring systems.

A technical “white paper” released by the agencies this week highlights key technical challenges for each thrust, identifies key objectives to overcome those challenges, and notes areas of research and development where nanotechnology promises to provide the needed solutions. By shining a spotlight on these areas, the new NSI will increase Federal coordination and collaboration, including with public and private stakeholders, which is vital to making progress in these areas. The additional focus and associated collective efforts will advance stewardship of water resources to support the essential food, energy, security, and environment needs of all stakeholders.

We applaud the commitment of the Federal agencies who will participate in this effort—the Department of Commerce/National Institute of Standards and Technology, Department of Energy, Environmental Protection Agency, National Aeronautics and Space Administration, National Science Foundation, and U.S. Department of Agriculture/National Institute of Food and Agriculture. As made clear at this week’s White House Water Summit, the world’s water systems are under tremendous stress, and new and emerging technologies will play a critical role in ensuring a sustainable water future.

The white paper (12 pp.) is titled: Water Sustainability through Nanotechnology: Nanoscale Solutions for a Global-Scale Challenge and describes the thrusts in more detail.

A March 22, 2016 US White House fact sheet lays out more details including funding,

Click here to learn more about all of the commitments and announcements being made today. They include:

  • Nearly $4 billion in private capital committed to investment in a broad range of water-infrastructure projects nationwide. This includes $1.5 billion from Ultra Capital to finance decentralized and scalable water-management solutions, and $500 million from Sustainable Water to develop water reclamation and reuse systems.
  • More than $1 billion from the private sector over the next decade to conduct research and development into new technologies. This includes $500 million from GE to fuel innovation, expertise, and global capabilities in advanced water, wastewater, and reuse technologies.
  • A Presidential Memorandum and supporting Action Plan on building national capabilities for long-term drought resilience in the United States, including by setting drought resilience policy goals, directing specific drought resilience activities to be completed by the end of the year, and permanently establishing the National Drought Resilience Partnership as an interagency task force responsible for coordinating drought-resilience, response, and recovery efforts.
  • Nearly $35 million this year in Federal grants from the Environmental Protection Agency, the National Oceanic and Atmospheric Administration, the National Science Foundation, and the U.S. Department of Agriculture to support cutting-edge water science;
  • The release of a new National Water Model that will dramatically enhance the Nation’s river-forecasting capabilities by delivering forecasts for approximately 2.7 million locations, up from 4,000 locations today (a 700-fold increase in forecast density).

This seems promising and hopefully other countries will follow suit.

Namib beetles, cacti, and pitcher plants teach scientists at Harvard University (US)

In this latest work from Harvard University’s Wyss Institute for Biologically Inspired Engineering, scientists have looked at three desert dwellers for survival strategies in water-poor areas. From a Feb. 25, 2015 news item on Nanowerk,

Organisms such as cacti and desert beetles can survive in arid environments because they’ve evolved mechanisms to collect water from thin air. The Namib desert beetle, for example, collects water droplets on the bumps of its shell while V-shaped cactus spines guide droplets to the plant’s body.

As the planet grows drier, researchers are looking to nature for more effective ways to pull water from air. Now, a team of researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Wyss Institute for Biologically Inspired Engineering at Harvard University have drawn inspiration from these organisms to develop a better way to promote and transport condensed water droplets.

A Feb. 24, 2016 Harvard University press release by Leah Burrows (also on EurekAlert), which originated the news item, expands on the theme,

“Everybody is excited about bioinspired materials research,” said Joanna Aizenberg, the Amy Smith Berylson Professor of Materials Science at SEAS and core faculty member of the Wyss Institute. “However, so far, we tend to mimic one inspirational natural system at a time. Our research shows that a complex bio-inspired approach, in which we marry multiple biological species to come up with non-trivial designs for highly efficient materials with unprecedented properties, is a new, promising direction in biomimetics.”

The new system, described in Nature, is inspired by the bumpy shell of desert beetles, the asymmetric structure of cactus spines and slippery surfaces of pitcher plants. The material harnesses the power of these natural systems, plus Slippery Liquid-Infused Porous Surfaces technology (SLIPS) developed in Aizenberg’s lab, to collect and direct the flow of condensed water droplets.

This approach is promising not only for harvesting water but also for industrial heat exchangers.

“Thermal power plants, for example, rely on condensers to quickly convert steam to liquid water,” said Philseok Kim, co-author of the paper and co-founder and vice president of technology at SEAS spin-off SLIPS Technologies, Inc. “This design could help speed up that process and even allow for operation at a higher temperature, significantly improving the overall energy efficiency.”

The major challenges in harvesting atmospheric water are controlling the size of the droplets, speed in which they form and the direction in which they flow.

For years, researchers focused on the hybrid chemistry of the beetle’s bumps — a hydrophilic top with hydrophobic surroundings — to explain how the beetle attracted water. However, Aizenberg and her team took inspiration from a different possibility – that convex bumps themselves also might be able to harvest water.

“We experimentally found that the geometry of bumps alone could facilitate condensation,” said Kyoo-Chul Park, a postdoctoral researcher and the first author of the paper. “By optimizing that bump shape through detailed theoretical modeling and combining it with the asymmetry of cactus spines and the nearly friction-free coatings of pitcher plants, we were able to design a material that can collect and transport a greater volume of water in a short time compared to other surfaces.”

“Without one of those parameters, the whole system would not work synergistically to promote both the growth and accelerated directional transport of even small, fast condensing droplets,” said Park.

“This research is an exciting first step towards developing a passive system that can efficiently collect water and guide it to a reservoir,” said Kim.

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

Condensation on slippery asymmetric bumps by Kyoo-Chul Park, Philseok Kim, Alison Grinthal, Neil He, David Fox, James C. Weaver, & Joanna Aizenberg. Nature (2016) doi:10.1038/nature16956 Published online 24 February 2016

This paper is behind a paywall.

I have featured the Namib beetle and its water harvesting capabilities most recently in a July 29, 2014 posting and the most recent story I have about SLIPS is in an Oct. 14, 2014 posting.

Harvard University’s Engineered Water Nanostructures (EWNS)

I last wrote about this research in a March 19, 2015 posting, which focused on work proving that a water-engineered nanostructure platform had microbial properties useful for decontaminating food and allowing manufacturers to avoid using chemicals for the task. This latest research focuses on finetuning the platform’s ability. Here’s more from the latest research paper’s abstract,

A chemical free, nanotechnology-based, antimicrobial platform using Engineered Water Nanostructures (EWNS) was recently developed. EWNS have high surface charge, are loaded with reactive oxygen species (ROS), and can interact-with, and inactivate an array of microorganisms, including foodborne pathogens. Here, it was demonstrated that their properties during synthesis can be fine tuned and optimized to further enhance their antimicrobial potential. A lab based EWNS platform was developed to enable fine-tuning of EWNS properties by modifying synthesis parameters. Characterization of EWNS properties (charge, size and ROS content) was performed using state-of-the art analytical methods. Further their microbial inactivation potential was evaluated with food related microorganisms such as Escherichia coli, Salmonella enterica, Listeria innocua, Mycobacterium parafortuitum, and Saccharomyces cerevisiae inoculated onto the surface of organic grape tomatoes. The results presented here indicate that EWNS properties can be fine-tuned during synthesis resulting in a multifold increase of the inactivation efficacy. More specifically, the surface charge quadrupled and the ROS content increased. Microbial removal rates were microorganism dependent and ranged between 1.0 to 3.8 logs after 45 mins of exposure to an EWNS aerosol dose of 40,000 #/cm3.

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

Optimization of a nanotechnology based antimicrobial platform for food safety applications using Engineered Water Nanostructures (EWNS) by Georgios Pyrgiotakis, Pallavi Vedantam, Caroline Cirenza, James McDevitt, Mary Eleftheriadou, Stephen S. Leonard, & Philip Demokritou. Scientific Reports 6, Article number: 21073 (2016) doi:10.1038/srep21073 Published online: 15 February 2016

This is an open access paper.

#BCTECH: preview of Summit, Jan. 18 – 19, 2016

It is the first and it is sold out. Fear Not! I have gotten a press pass so I can investigate a bit further. In the meantime, #BCTECH Summit 2016 is a joint venture between the province of British Columbia (BC, Canada) and the BC Innovation Council (BCIC), a crown corporation formerly known as the Science Council of British Columbia.  A Jan 6, 2016 BCIC news release tells the story,

With less than two weeks to go and tickets 95% sold out, world-renowned keynote speakers will reinforce technology’s increasing economic and social impact to more than 2,000 people during B.C.’s first #BCTECH Summit on Jan. 18 & 19, 2016.

With Microsoft confirmed as the title sponsor, the summit will feature numerous dynamic keynote speakers:

  •  Ray Kurzweil, inventor, futurist—described as “the restless genius”, with predictions that will change how people think about the future.
  •  Andrew Wilson, CEO, Electronic Arts—named one of the top people in business by Fortune magazine.
  •  T.K. “Ranga” Rengarajan, corporate vice-president, Microsoft—will explore how technology and the cloud is empowering Canadians and changing how we do business and interact in the digital world.
  •  Elyse Allan, president and CEO, GE Canada—named one of the 25 most powerful people in Canada.
  •  Eric Ries, pioneer of the Lean Startup movement—a new approach to business that’s being adopted around the world; changing the way companies are built and new products are launched.

In addition, panel discussions featuring B.C. business leaders and global thought leaders will explore the latest trends, including fintech, cleantech, big data and cyber security.

A technology showcase will feature B.C.’s most innovative technology at work, including robots, 3D printing and electric cars. A new exhibit, the 4D Portal, will take delegates on a journey of B.C. tech, from deep below the earth’s surface into outer space.

More than 500 high school and post-secondary students will also take part in the summit’s career showcase featuring speakers and exhibitors sharing the latest information about technology as a career choice that pays, on average, 60% more than the B.C. average.

As part of the career showcase, nearly 200 high school students will participate in a coding camp and learn basic coding skills. The coding camp will also be offered via live webcast so schools throughout the province can participate.

A key component of the summit will profile venture capital presentations made by 40 promising small- to medium-sized B.C. companies aiming to attract investors and proceed to the next stage of development.

B.C.’s technology sector, a key pillar of the BC Jobs Plan, is consistently growing faster than the economy overall. Its continued growth is integral to diversifying the Province’s economy, strengthening B.C.’s business landscape and creating jobs in B.C. communities.

The new $100 million venture capital BC Tech Fund, announced Dec. 8, 2015, is the first pillar of the comprehensive #BCTECH Strategy to be released in full at B.C.’s first #BCTECH Summit, Jan. 18 – 19, 2016. The conference is presented by the B.C. government in partnership with the BC Innovation Council (BCIC). To register or learn more, go to: http://bctechsummit.ca

Quotes:

Minister of Technology, Innovation and Citizens’ Services, Amrik Virk –

“Strengthening our technology sector is part of our commitment to support our diverse economy. The summit provides an unprecedented opportunity for like-minded individuals to get together and discuss ways of growing this sector and capitalizing from that growth.”

President and CEO, BCIC, Greg Caws –

“We are pleased to provide British Columbians from across the province with the opportunity to explore how technology impacts our lives and our businesses. Above all, the #BCTECH Summit will be a catalyst for all of us to embrace technology and an innovation mindset.”

President, Microsoft Canada, Janet Kennedy –

“Microsoft is proud to be the title sponsor of the #BCTECH Summit—an event that showcases B.C.’s vibrant technology industry. We are excited about the growth of B.C.’s tech sector and are pleased that we’re expanding our developer presence in Vancouver and supporting Canadian private and public sector organizations through our investments in Canadian data centres.”

Quick Facts:

  •  The technology sector directly employs more than 86,000 people, and wages for those jobs are 60% higher than B.C.’s industrial average.
  •  B.C.’s technology sector is growing faster than the overall economy. In 2013, it grew at a rate of 4.7%, higher than the 3.2% growth observed in the provincial economy.
  •  In 2013, the technology sector added $13.9 billion to B.C.’s GDP.
  •  B.C.’s 9,000 technology companies combined generated $23.3 billion in revenue in 2013.
  •  New technology companies are emerging at increasing rates throughout the province. In 2013, there was an addition of more than 700 new technology companies in B.C., an increase of 8% over the prior year.

I’m not a big fan of Kurzweil’s but the man can sell tickets and, in days past, he did develop some important software. You can find out more about him on his website and critiques can be found here on Quora, as well as, a thoughtful Nov. 5, 2012 piece by Gary Marcus for the New Yorker about Kurzweil’s latest book (“How to Create a Mind: The Secret of Human Thought Revealed”).

As for me, I’m most interested in the trade show/research row/technology showcase. Simon Fraser University sent out a Jan. 14, 2016 news release highlighting its participation in the trade show and summit (weirdly there was nothing from the other major local research institution, the University of British Columbia),

Simon Fraser University is a gold sponsor of the #BCTECH Summit a new two-day event presented by the B.C. government and the BC Innovation Council to showcase the province’s vibrant technology sector

 

Simon Fraser University will be highly visible at the inaugural #BCTECH Summit taking place on January 18-19 at the Vancouver Convention Centre.

 

In addition to technology displays from student entrepreneurs at the SFU Innovates booth, SFU research will be featured at both the Technology Showcase and Research Row. [emphasis mine] SFU representatives will be on hand at the Career Showcase to speak to secondary and post-secondary students who are interested in the industry. And several investment-ready companies affiliated with SFU will be pitching to elite investors.

 

During the summit, entrepreneurs, investors, researchers, students and government will explore new ideas on how to gain a competitive advantage for B.C. The event will spark discussion on directions for the province’s rapidly developing high tech sector, while several streams will illustrate and share new innovations.

 

“This event provides us with an opportunity to showcase how SFU students, faculty, alumni and client companies are stimulating innovation and creating jobs and opportunities for British Columbia,“ says SFU Vice-President Research Joy Johnson. “And it highlights the work we’ve been doing to inspire, develop and support impact-driven innovation and entrepreneurship through SFU Innovates.”

 

SFU Innovates was launched in October to synergize and strengthen the university’s activities and resources related to community and industry engagement, incubation and acceleration, entrepreneurship and social innovation.

 

Johnson will introduce the summit’s keynote address by Eric Ries, Silicon Valley entrepreneur and author of The Lean Startup, on How today’s Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses, on Jan. 18 [2016] at 10:45 a.m.

 

SFU Faculty of Applied Sciences professor Ryan D’Arcy will be a panelist at a session titled Industry Deep Dive – Healthcare, moderated by Paul Drohan, CEO, Life Sciences BC, on Jan. 19 [2016] at 11 a.m. He will share how Surrey’s thriving Innovation Boulevard (IB) is progressing. SFU is a founding partner of IB and contributes via the university’s research strengths in health and technology and its focus on health tech innovation.

 

Steven Jones, an SFU professor of molecular biology and biochemistry, and associate director and head of bioinformatics at the Michael Smith Genome Sciences Centre, BCCA [BC Cancer Agency], will participate on a panel titled Shaping the Future of Health, on Jan. 19 [2016] at 2:15 p.m., to be moderated by the Honourable Terry Lake, Minister of Health.

 

And Igor Faletski, CEO of Mobify (and an SFU alumnus) will participate in the “Why BC?” session to be moderated by Bill Tam, CEO of BCTIA [BC Technology Industry Association], on Jan. 18 [2016] at 11:30 a.m.

 

Students and delegates will also have the opportunity to explore the various research and technology showcases.

 

Backgrounder: SFU Innovations at #BCTECH Summit

 

Research Row

 

4D LABS will showcase how it has helped B.C.’s academic and industry tech clients turn their ideas into innovations. The facility has been instrumental in bringing numerous ideas out of the lab and into the marketplace, advancing a diverse range of technologies, including fuel cells, batteries, biosensors, security devices, pharmaceutical delivery, MEMS, and many more. As B.C.’s premier materials research institute, the open-access, $65 million state-of-the-art facility has helped to advance nearly 50 companies in the local tech sector.

 

• SFU researchers led by JC Liu of the Faculty of Applied Sciences will display their cloud gaming platform, Rhizome, utilizing the latest hardware support for both remote servers and local clients. The platform takes the first step towards bridging online gaming systems and the public cloud, accomplishing ultra-low latency and resulting in a low power consumption gaming experience. Their demo shows that gaming over virtualized cloud can be made possible with careful optimization and integration of different modules. They will also introduce CrowdNavigation, a complementary service to existing navigation systems that combats the “last mile puzzle” and helps drivers to determine the end of routes.

 

Molescope is a hand held tool that uses a smartphone to monitor skin for signs of cancer. The device is based on research that Maryam Sadeghi conducted during her doctoral studies at SFU and commercialized through her company, MetaOptima Inc., a former SFU Venture Connection client. The product was unveiled at the World Congress of Dermatology in 2015 and is also now available at the consumer level. Molescope enables people to monitor their moles and manage skin health.

 

Technology Showcase

 

• Engineering science professors Siamak Arzanpour and Edward Park will showcase their Wearable Lower Limb Anthropomorphic Exoskeleton (WLLAE) – a lightweight, battery-operated and ergonomic robotic system to help those with mobility issues improve their lives. The exoskeleton features joints and links that correspond to those of a human body and sync with motion. SFU has designed, manufactured and tested a proof-of-concept prototype and the current version can mimic all the motions of hip joints. Researchers anticipate the next generation of this system early this year. The prototype will be live-demoed as an example of a breakthrough innovation.

 

Venture Capital Presentations

 

Several SFU-affiliated companies were selected to present investment pitches to local and international venture capitalists at the summit, including:

 

H+ Technology, creator of Holus, an interactive, tabletop holographic platform that converts any digital content from your tablet, smartphone, PC or Mac into a 360-degree holographic experience. H+ was co-founded by three SFU alumni and was a former client company of the SFU incubator at the Harbour Centre campus.

 

Optigo Networks, a VentureLabs® client company that delivers next-generation security for the commercial Internet of Things.

 

Saltworks Technologies Inc., provider of advanced water treatment solutions and a company founded by two graduates of SFU’s Management of Technology MBA program.

 

Semios, a VentureLabs® client company and emerging leader in agricultural technology innovation.

 

VeloMetro Mobility Inc., a former SFU Venture Connection and current VentureLabs® client company with the mission to provide people with human-powered vehicles that parallel automobile functionality for urban use.

 

SFU Innovates Trade Show will include:

 

• H+ Technology (see above)

 

Shield X Technology, creators of Brainshield™, an impact-diverting decal for sports helmets that is the result of six years of R&D at SFU’s School of Mechatronics Systems Engineering at the Surrey campus. An SFU spinout, it is a current VentureLabs® client company.

 

• Acceleration Innovations, creator of Birth Alert, the first ever app-enabled, automatic and wireless contraction-monitoring device. Acceleration Innovations was founded by a team of students from the Technology Entrepreneurship@SFU program.

 

ORA Scents, a mobile device company created by an SFU Beedie School of Business undergrad student, that is introducing the world’s first app-enabled scent diffuser that enables users to create, control and share personalized scents in real-time. [Sounds like oPhone mentioned in my June 18, 2014 posting.)

 

Also presenting at the VentureLabs area within the BC Accelerator Network Pavilion will be: PHEMI Health Systems, Semios, XCo, U R In Control, TeamFit, Instant, Wearable Therapeutics, V7 Entertainment, ThinkValue, and Aspect Biosystems. Lungpacer Medical and Metacreative, both companies formed around SFU faculty research, will also have exhibits.

 

Prize draws will be held for projects from RADIUS Slingshot ventures The Capilano Tea House & Botanical Soda Co. and Naked Snacks.

I’m particularly interested in what 4D Labs is doing these days. (They used to brand themselves as a nanotechnology laboratory but they’ve moved on to what they see as more sophisticated branding. I’m just curious. Have they changed focus or is it nanotechnology under a new name?)

What is the effect of nanoscale plastic on marine life?

A Nov.27, 2015 news item on Nanowerk announces a new UK (United Kingdom) research project designed to answer the question: what impact could nanoscale plastic particles  have on the marine environment?,

As England brings in pricing on plastic carrier bags, and Scotland reveals that similar changes a little over a year ago have reduced the use of such bags by 80%, new research led by Heriot-Watt University in conjunction with Plymouth University will look at the effect which even the most microscopic plastic particles can have on the marine environment.

While images of large ‘islands’ of plastic rubbish or of large marine animals killed or injured by the effects of such discards have brought home some of the obvious negative effects of plastics in the marine environment, it is known that there is more discarded plastic out there than we can account for, and much of it will have degraded into small or even microscopic particles.

It is the effect of these latter, known as nano-plastics, which will be studied under a £1.1m research project, largely funded by NERC [UK Natural Environment Research Council] and run by Heriot-Watt and Plymouth Universities.

A Nov. 25, 2015 Herriot-Watt University press release, which originated the news item, provides more details,

The project, RealRiskNano, will look at the risks these tiny plastic particles pose to the food web including filter-feeding organisms like mussels, clams and sediment dwelling organisms. It will focus on providing information to improve environmental risk assessment for nanoplastics, based on real-world exposure scenarios replicated in the laboratory.

Team leader Dr Theodore Henry, Associate Professor of Toxicology at Heriot-Watt’s School of Life Sciences, said that the study will build on previous research on nano-material toxicology, but will provide information which the earlier studies did not include.

“Pieces of plastic of all sizes have been found in even the most remote marine environments. It’s relatively easy to see some of the results: turtles killed by easting plastic bags which they take for jelly fish, or large marine mammals drowned when caught in discarded ropes and netting.

“But when plastics fragment into microscopic particles, what then? It’s easy to imagine that they simply disappear, but we know that nano-particles pose their own distinct threats purely because of their size. They’re small enough to be transported throughout the environment with unknown effects on organisms including toxicity and interference with processes of the digestive system.

An important component of the project, to be investigated by Dr Tony Gutierrez at Heriot-Watt, will be the study of interactions between microorganisms and the nanoplastics to reveal how these interactions affect their fate and toxicology.

The aim, said Dr Henry, is to provide the information which is needed to effect real change.“We simply don’t know what effects these nano-plastic particles may pose to the marine environment, to filter-feeders and on to fish, and through the RealRiskNano project we aim to provide this urgently needed information to the people whose job it is to assess risk to the marine ecosystem and decide what steps need to be taken to mitigate it.”

You can find the RealRiskNano website here.

STEM for refugees and disaster relief

Just hours prior to the terrorist bombings in Paris (Friday, Nov. 13, 2015), Tash Reith-Banks published a Nov. 13, 2015 essay (one of a series) in the Guardian about science, technology, engineering, and mathematics (STEM) as those specialties apply to humanitarian aid with a special emphasis on Syrian refugee crisis.

This first essay focuses on how engineering and mathematics are essential when dealing with crises (from Reith-Banks’s Nov. 13, 2015 essay), Note: Links have been removed,

Engineering is a clear starting point: sanitation, shelter and supply lines are all essential in any crisis. As Martin McCann, CEO at RedR, which trains humanitarian NGO workers says: “There is the obvious work in providing water and sanitation and shelter. By shelter, we mean not only shelter or housing for disaster-affected people or refugees, but also structures to store both food and non-food items. Access is always critical, so once again engineers are needed to build roads or in some cases temporary landing strips.”

Emergency structures need to be light and fast to transport and erect, but tend not to be durable. One recent development comes from engineers Peter Brewin and Will Crawford of Concrete Canvas., The pair have developed a rapid-setting concrete-impregnated fabric that requires only air and water to harden into a water-proof, fire-resistant construction. This has been used to create rapidly deployable concrete shelters that can be carried in a bag and set up in an hour.

Here’s what one of the concrete shelters looks like,

A Concrete Canvas shelter. Once erected the structure takes 24 hours to harden, and then can be further insulated with earth or snow if necessary. Photograph: Gareth Phillips/Gareth Phillips for the Guardian

A Concrete Canvas shelter. Once erected the structure takes 24 hours to harden, and then can be further insulated with earth or snow if necessary. Photograph: Gareth Phillips/Gareth Phillips for the Guardian

There are many kinds of crises which can lead to a loss of shelter, access to water and food, and diminished safety and health as Reith-Banks also notes in a passage featuring mathematics (Note: A link has been removed),

Maths might seem a far cry from the sort of practical innovation described above, but of course it’s the root of great logistics. Alistair Clark from the University of the West of England is using advanced mathematical modelling to improve humanitarian supply chains to ensure aid is sent exactly where it is needed. Part of the Newton Mobility scheme, Clark’s project will partner with Brazilian disaster relief agencies and develop ways of modelling everything from landslides to torrential downpours in order to create sophisticated humanitarian supply chains that can rapidly adapt to a range of possible disaster scenarios and changing circumstances.

In a similar vein, Professor Amr Elnashai, founder and co-editor of the Journal of Earthquake Engineering, works in earthquake-hit areas to plan humanitarian relief for future earthquakes. He recently headed a large research and development effort funded by the Federal Emergency Management Agency in the USA (FEMA), to develop a computer model of the impact of earthquakes on the central eight states in the USA. This included social impact, temporary housing allocation, disaster relief, medical and educational care, as well as engineering damage and its economic impact.

Reith-Banks also references nanotechnology (Note: A link has been removed),

… Up to 115 people die every hour in Africa from diseases linked to contaminated drinking water and poor sanitation, particularly in the wake of conflicts and environmental disasters. Dr Askwar Hilonga recently won the Royal Academy of Engineering Africa Prize, which is dedicated to African inventions with the potential to bring major social and economic benefits to the continent. Hilonga has invented a low cost, sand-based water filter. The filter combines nanotechnology with traditional sand-filtering methods to provide safe drinking water without expensive treatment facilities.  …

Dr. Hilonga who is based in Tanzania was featured here in a June 16, 2015 posting about the Royal Academy of Engineering Prize, his research, and his entrepreneurial efforts.

Reith-Banks’s* essay provides a valuable and unexpected perspective on the humanitarian crises which afflict this planet *and I’m looking forward to the rest of the series*.

*’Reith-Banks’s’ replaced ‘This’ and ‘and I’m looking forward to the rest of the series’ was added Nov. 17, 2015 at 1620 hours PST.

Brushing your way to nanofibres

The scientists are using what looks like a hairbrush to create nanofibres ,

Figure 2: Brush-spinning of nanofibers. (Reprinted with permission by Wiley-VCH Verlag)) [downloaded from http://www.nanowerk.com/spotlight/spotid=41398.php]

Figure 2: Brush-spinning of nanofibers. (Reprinted with permission by Wiley-VCH Verlag)) [downloaded from http://www.nanowerk.com/spotlight/spotid=41398.php]

A Sept. 23, 2015 Nanowerk Spotlight article by Michael Berger provides an in depth look at this technique (developed by a joint research team of scientists from the University of Georgia, Princeton University, and Oxford University) which could make producing nanofibers for use in scaffolds (tissue engineering and other applications) more easily and cheaply,

Polymer nanofibers are used in a wide range of applications such as the design of new composite materials, the fabrication of nanostructured biomimetic scaffolds for artificial bones and organs, biosensors, fuel cells or water purification systems.

“The simplest method of nanofiber fabrication is direct drawing from a polymer solution using a glass micropipette,” Alexander Tokarev, Ph.D., a Research Associate in the Nanostructured Materials Laboratory at the University of Georgia, tells Nanowerk. “This method however does not scale up and thus did not find practical applications. In our new work, we introduce a scalable method of nanofiber spinning named touch-spinning.”

James Cook in a Sept. 23, 2015 article for Materials Views provides a description of the technology,

A glass rod is glued to a rotating stage, whose diameter can be chosen over a wide range of a few centimeters to more than 1 m. A polymer solution is supplied, for example, from a needle of a syringe pump that faces the glass rod. The distance between the droplet of polymer solution and the tip of the glass rod is adjusted so that the glass rod contacts the polymer droplet as it rotates.

Following the initial “touch”, the polymer droplet forms a liquid bridge. As the stage rotates the bridge stretches and fiber length increases, with the diameter decreasing due to mass conservation. It was shown that the diameter of the fiber can be precisely controlled down to 40 nm by the speed of the stage rotation.

The method can be easily scaled-up by using a round hairbrush composed of 600 filaments.

When the rotating brush touches the surface of a polymer solution, the brush filaments draw many fibers simultaneously producing hundred kilometers of fibers in minutes.

The drawn fibers are uniform since the fiber diameter depends on only two parameters: polymer concentration and speed of drawing.

Returning to Berger’s Spotlight article, there is an important benefit with this technique,

As the team points out, one important aspect of the method is the drawing of single filament fibers.

These single filament fibers can be easily wound onto spools of different shapes and dimensions so that well aligned one-directional, orthogonal or randomly oriented fiber meshes with a well-controlled average mesh size can be fabricated using this very simple method.

“Owing to simplicity of the method, our set-up could be used in any biomedical lab and facility,” notes Tokarev. “For example, a customized scaffold by size, dimensions and othermorphologic characteristics can be fabricated using donor biomaterials.”

Berger’s and Cook’s articles offer more illustrations and details.

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

Touch- and Brush-Spinning of Nanofibers by Alexander Tokarev, Darya Asheghal, Ian M. Griffiths, Oleksandr Trotsenko, Alexey Gruzd, Xin Lin, Howard A. Stone, and Sergiy Minko. Advanced Materials DOI: 10.1002/adma.201502768ViewFirst published: 23 September 2015

This paper is behind a paywall.

The Gaza is running out of water by 2016 if the United Nations predictions are correct

If the notion that people are in imminent danger of dying from thirst isn’t compelling enough, there’s this account of the situation and a possible solution in an August 24, 2015 posting by observers, Abou Assi and Majdi Fathi, with journalist, Dorothée Myriam Kellou for observers.france24.com,

Each year, Gaza’s population uses 180 million cubic metres of water but only has capacity for 60 million cubic metres of water usage per year. Running out of water is a constant fear for Gazans.

To understand the context of the crisis, we first spoke to our Observer Majdi Fathi, a photographer who lives in Gaza. He described the daily struggles of living in a place with a shortage of potable water.

The water that comes out of the taps in Gaza is too salty to drink. We only use it for washing. We have to buy bottled water to drink. Each family goes to water vendors. [Editor’s note : Often, families buy water from private companies who run desalination plants with little regulation. Though the water quality is often criticised, it’s still very expensive]. People frequently pay about $2 for 500 litres of water. There are ten people in my family and we can live on 500 litres for about 25 days. Though the authorities give some free water to the very poorest, it’s not enough.

We are all worried about the water shortage. Often, the taps run dry and we end up having to use the drinking water that we purchased for cleaning. Buying water from vendors is not a long-term, sustainable solution!

In a June 25, 2013 posting, I included (in an update) some information about the Gaza situation in the context of water issues in Israel and a special project with the University of Chicago designed to address those issues,

ETA June 27, 2013: There is no hint in the University of Chicago news releases that these water projects will benefit any parties other than Israel and the US but it is tempting to hope that this work might also have an impact in Palestine given its current water crisis there as described in a June 26, 2013 news item in the World Bulletin (Note: Links have been removed),

A tiny wedge of land jammed between Israel, Egypt and the Mediterranean sea, the Gaza Strip is heading inexorably into a water crisis that the United Nations says could make the Palestinian enclave unliveable in just a few years.

With 90-95 percent of the territory’s only aquifer contaminated by sewage, chemicals and seawater, neighbourhood desalination facilities and their public taps are a lifesaver for some of Gaza’s 1.6 million residents.

But these small-scale projects provide water for only about 20 percent of the population, forcing many more residents in the impoverished Gaza Strip to buy bottled water at a premium.

“There is a crisis. There is a serious deficit in the water resources in Gaza and there is a serious deterioration in the water quality,” said Rebhi El Sheikh, deputy chairman of the Palestinian Water Authority (PWA).

A NASA study of satellite data released this year showed that between 2003 and 2009 the region lost 144 cubic km of stored freshwater – equivalent to the amount of water held in the Dead Sea – making an already bad situation much worse.

But the situation in Gaza is particularly acute, with the United Nations warning that its sole aquifer might be unusable by 2016, with the damage potentially irreversible by 2020.

Abou Assi, a Palestinian engineer, thinks he may have a solution (from the observers.france24.com Aug. 24, 2015 posting),

The water table, which is the main source of drinking water in Gaza, is being over-exploited and is also polluted by both nitrates used in agriculture and by sea water. Gaza’s groundwater could run out as soon as next year, according to the United Nations.

While I was working on my masters in engineering at the Islamic University in Gaza, I started looking for a radical solution to the problem. Seeing as Gaza is located on the shores of the Mediterranean, I started considering a filtration system that could desalinate sea water.

There are seven different desalination plants in Gaza. They each produce between 45 and 80 cubic metres of water an hour. The problem is that all of these factories use the reverse osmosis procedure [Editor’s note: This is a water purification system that uses a semipermeable membrane to remove larger particles, including salt molecules, from water molecules].

Even though the method is ingenious, it requires a lot of energy. This is a problem in Gaza, because we also have a major energy shortage. Our power plant, which provides Gaza with about a third of its energy, regularly stops working due to fuel shortages.

My team and I conducted 170 experiments in 14 months before we managed to create a machine that reduced the salinity of the seawater enough to make it drinkable.

The machine is very simple: it pumps sea water very quickly through iron pipes. The water passes through electrical boxes that push the water through membranes made from nanomaterials. The membranes have tiny, microscopic pores that block the sodium chloride (salt) molecules but allow the water molecules to go through. After the water is filtered, the useful minerals are re-injected. After all this, the water that comes out of the taps is clean enough to drink!

With this machine, it’s possible to treat one cubic metre of water per day, using 60% less energy than with the old system. The water meets the quality standards of the World Health Organisation, which puts limits on a number of substances, including chlorine, limestone, lead, nitrates, pesticides and bacteria. For now, some so-called “drinkable” water in Gaza has nitrate levels that can reach up to 220 mg per litre even though the WHO recommends a limit of 50 mg per litre. Poorly treated drinking water can cause many health problems, especially for children. [Editor’s note: The WHO recently noted an increase in cases of children with diarrhea in Gaza].

Assi has gone into debt to finance his research despite the fact he has received grants for this work (from the observers.france24.com Aug. 24, 2015 posting),

In order to transition from the prototype to a practical application, I need more financial support. I would like to create a model of a smaller version that could be put into people’s homes in Gaza. In order to develop this, all I need is about $20,000.

That said, in order to really resolve the drinking water crisis across Gaza, we would need to build a desalination plant that uses this technique. That would be expensive — about $300,000 million – and there would always be the fear that the plant would be bombed, like with the power plant.

We have attempted to discuss our ideas with officials in both Gaza and Ramallah but, for the time being, we have received no response. We hope for support both from Palestinian institutions and from the international community.

There doesn’t yet seem to be a website or Facebook page or other means of contacting and/or lending other kinds of support to Assi. Hopefully, he will have something soon.

In a February 24, 2014 posting, I featured a nanotechnology laboratory in Oman where they were studying and working to develop desalination technologies. (I noticed that Assi received a grant for his work from the  Middle East Desalination Research Center in Oman.)

Slingshot; a movie about a water purification system

Thanks to David Bruggeman of the Pasco Phronesis blog for his Aug. 2, 2015 posting about Slingshot, which is both a water purification system and a documentary about Dean Kamen, inventor, and his system.  From the Slingshot (movie) About page,

SlingShot focuses on Segway inventor Dean Kamen, his fascinating life, and his work to solve the world’s water crisis.

Iconoclast, Kamen, is a modern hero. His inventions, mostly medical devices, help people in need and ease suffering. Several documentaries have been produced about the world’s dire water challenges. SlingShot is a film about an indomitable man who just might have enough passion, will, and innovative thinking to create a solution for a crisis that affects billions.

A quirky genius with a sharp wit and a provocative worldview, Kamen is our era’s Thomas Edison. He takes on the world’s grand challenges one invention at a time. Best known for his Segway Human Transporter, Kamen has reconceived kidney dialysis, engineered an electric wheelchair that can travel up stairs (the iBot), reworked the heart stent, built portable insulin pumps, founded FIRST robotics to inspire young students, and on and on. Holder of over 440 U.S. and foreign patents, Kamen devotes himself to dreaming up products that improve people’s lives. For the last 15 years, he has relentlessly pursued an effective way to clean up the world’s water supply.

Fifty percent of all human illness is the result of water borne pathogens. Dean Kamen has invented an energy efficient vapor compression distiller that can turn any unfit source of water (seawater, poisoned well water, river sludge, etc.) into potable, safe water without any need for chemical additives or filters. Kamen has nicknamed his device the SlingShot as in the David and Goliath story. In Kamen’s imagining, undeveloped countries are filled with little Davids, and just like the biblical slingshot and stone, the SlingShot device is the tiny piece of technology that is going to take down the gigantic Goliath of bad water.

David lists upcoming US screenings of the documentary and speculates as to a possible market for the system in the US. From David’s Aug. 2, 2015 posting,

It’s worth noting that while Kamen’s target markets for the Slingshot device are in the developing world, the drought in the Western United States may generate additional demand for the Slingshot.  The water conservation tips on the film’s website are worth following, and perhaps some enterprising (or desperate) local government may try to address its water troubles through judicious use of technology like the Slingshot.

You can check the Slingshot documentary Upcoming webpage for US and international screenings, as well as, a list of screenings stretching back to March 2014. Should you wish to host a screening, there’s the Host a Screening webpage.

Unfortunately, I was not able to find any technical details, additional to those on the About page, regarding Kamen’s vapor compression distiller (Slingshot).