Tag Archives: Jennifer Pelley

The memristor rises; commercialization and academic research in the US; carbon nanotubes could be made safer than we thought

In 2008, two memristor papers were published in Nature and Nature Nanotechnology, respectively. In the first (Nature, May 2008 [article still behind a paywall], a team at HP Labs claimed they had proved the existence of memristors (a fourth member of electrical engineering’s ‘Holy Trinity of the capacitor, resistor, and inductor’). In the second paper (Nature Nanotechnology, July 2008 [article still behind a paywall]) the team reported that they had achieved engineering control.

I mention this because (a) there’s some new excitement about memristors and (b) I love the story (you can read my summary of the 2008 story here on the Nanotech Mysteries wiki).

Unbeknownst to me in 2008, there was another team, located in Japan, whose work  on slime mould inspired research by a group at the University of California San Diego (UC San Diego)  which confirmed theorist Leon Chua’s (he first suggested memristors existed in 1971) intuition that biological organisms used memristive systems to learn. From an article (Synapse on a Chip) by Surf daddy Orca on the HPlus magazine site,

Experiments with slime molds in 2008 by Tetsu Saisuga at Hokkaido University in Sapporo sparked additional research at the University of California, San Diego by Max Di Ventra. Di Ventra was familiar with Chua’s work and built a memristive circuit that was able to learn and predict future signals. This ability turns out to be similar to the electrical activity involved in the ebb and flow of potassium and sodium ions across cellular membranes: synapses altering their response according to the frequency and strength of signals. New Scientist reports that Di Ventra’s work confirmed Chua’s suspicions that “synapses were memristors.” “The ion channel was the missing circuit element I was looking for,” says Chua, “and it already existed in nature.”

Fast forward to 2010 and a team at the University of Michigan led by Dr. Wei Lu showing how synapses behave like memristors (published in Nano Letters, DOI: 10.1021/nl904092h [article behind paywall]). (Fromthe  HPlus site article)

Scientific American describes a US military-funded project that is trying to use the memristor “to make neural computing a reality.” DARPA’s Systems of Neuromorphic Adaptive Plastic Scalable Electronics Program (SyNAPSE) is funded to create “electronic neuromorphic machine technology that is scalable to biological levels.”

I’m not sure if the research in Michigan and elsewhere is being funded by DARPA (the US Dept. of Defense’s Defense Advanced Research Project Agency) although it seems likely.

In the short term, scientists talk about energy savings (no need to reboot your computer when you turn it back on). In the longer term, they talk about hardware being able to learn. (Thanks to the Foresight Institute for the latest update on the memristor story and the pointer to HPlus.) Do visit the HPlus site as there are some videos of scientists talking about memristors and additional information (there’s yet another team working on research that is tangentially related).

Commercializing academic research in US

Thanks to Dave Bruggeman at the Pasco Phronesis blog who’s posted some information about a White House Request for Information (RFI) on commercializing academic research. This is of particular interest not just because of the discussion about innovation in Canada but also because the US National Nanotechnology Initiative’s report to PCAST (President’s Council of Advisors on Science and Technology, my comments about the webcast of the proceedings here). From the Pasco Phronesis posting about the NNI report,

While the report notes that the U.S. continues to have a strong nanotechnology sector and corresponding support from the government. However, as with most other economic and research sectors, the rest of the world is catching up, or spending enough to try and catch up to the United States.

According to the report, more attention needs to be paid to commercialization efforts (a concern not unique to nanotechnology).

I don’t know how long the White House’s RFI has been under development but it was made public at the end of March 2010 just weeks after the latest series of reports to PCAST. As for the RFI itself, from the Pasco Phronesis posting about it,

The RFI questions are organized around two basic concerns:

  • Seeking ideas for supporting the commercialization and diffusion of university research. This would include best practices, useful models, metrics (with evidence of their success), and suggested changes in federal policy and/or research funding. In addition, the RFI is interested in how commercialization ecosystems can be developed where none exist.
  • Collecting data on private proof of concept centers (POCCs). These entities seek to help get research over the so-called “Valley of Death” between demonstrable research idea and final commercial product. The RFI is looking for similar kinds of information as for commercialization in general: best practices, metrics, underlying conditions that facilitate such centers.

I find the news of this RFI a little surprising since I had the impression that commercialization of academic research in the US is far more advanced than it is here in Canada. Mind you, that impression is based on a conversation I had with a researcher a year ago who commented that his mentor at a US university rolled out more than 1 start up company every year. As I understand it researchers in Canada may start up one or two companies in their career but never a series of them.

Carbon nanotubes, is exposure ok?

There’s some new research which suggests that carbon nanotubes can be broken down by an enzyme. From the news item on Nanowerk,

A team of Swedish and American scientists has shown for the first time that carbon nanotubes can be broken down by an enzyme – myeloperoxidase (MPO) – found in white blood cells. Their discoveries are presented in Nature Nanotechnology (“Carbon nanotubes degraded by neutrophil myeloperoxidase induce less pulmonary inflammation”) and contradict what was previously believed, that carbon nanotubes are not broken down in the body or in nature. The scientists hope that this new understanding of how MPO converts carbon nanotubes into water and carbon dioxide can be of significance to medicine.

“Previous studies have shown that carbon nanotubes could be used for introducing drugs or other substances into human cells,” says Bengt Fadeel, associate professor at the Swedish medical university Karolinska Institutet. “The problem has been not knowing how to control the breakdown of the nanotubes, which can caused unwanted toxicity and tissue damage. Our study now shows how they can be broken down biologically into harmless components.”

I believe they tested single-walled carbon nanotubes (CNTs) only as the person who wrote the news release seems unaware that mutil-walled CNTs also exist. In any event, this could be very exciting if this research holds up under more testing.

Peter Julian’s interview about proposing Canada’s first nanotechnology legislation (part 2 of 3); more on the UK Nanotechnologies Strategy; Dylan Thomas, neuroscience and an open reading

This is part 2 of an interview with Member of Parliament, Peter Julian, NDP (New Democrat Party) who tabled the first Canadian bill to regulate nanotechnology. Yesterday’s part of the interview featured some biographical notes about Mr. Julian and his answers to questions about why he, in particular, tabled the bill; the NDP’s shadow science minister’s (Jim Malloway) involvement; and the NDP’s commitment to science policy. Today, Julian explains why he favours the application of the precautionary principle to nanotechnology, notes the research he used before writing his bill, and comments on a national inventory scheme. NOTE: As some folks may prefer other media or summaries/commentaries on these reports, in situations where I have additional material, I’ve taken the liberty of giving links, clearly marking my additions.

Why do you favour applying the precautionary principle which has received some criticism as it favours the status quo?

I believe that the precautionary principle does not favour the status quo. The status quo hinders appropriate applications of precaution. Environmental, health, and safety gaps in the application of Nanotechnology are a shared concern between countries, as reflected in recent reports to Congress and the EU and at the OECD. Precaution towards discovery, product, production, use and eventual disposal is simple common sense.

The precautionary principle deters action without reflection. When a product is massively put on the market we have to be sure that it will not have adverse effects on health and the environment, and not just a short lived positive effect on the bottom line.

What research materials support your (BILL) and are these materials that you would recommend interested citizens read?

I have a list of links concerning these materials:

ED. NOTE:  I offered some commentary here and links to other commentaries here about this report.

  • The Chatham House briefing paper, Regulating Nanomaterials: A Transatlantic Agenda (September 2009) an excellent eight page read:

http://www.chathamhouse.org.uk/publications/papers/view/-/id/774/

ED. NOTE: There is a Project on Emerging Nanotechnologies (PEN)webcast of a presentation by the folks who authored the report. The webcast and speaker presentations can be found here and my commentary on the webcast here.

ED. NOTE: PEN webcast a presentation by J. Clarence Davies on Oversight of Next Generation Nanotechnology available here along with a speaker’s presentation and additional materials.

  • The National Nanotechnology Initiative document lays out a substantive, and sound, research program. Canada’s strategy remains limited in scope and vision.

http://www.nano.gov/NNI_EHS_Research_Strategy.pdf

I noticed mention of a public inventory for nanomaterials and it reminded me of a proposed Environment Canada nanomaterials inventory or reporting plan that was announced in January 2008. Do you know if this inventory ever took place or what its current status is?

The inventory is not completed yet. The bill develops a mandatory requirement for an inventory and there have been no prior operational inventories regarding nanotechnology products, which is why this bill is so important.

I would like to stress that in addition to the precautionary principle, Bill C-494 is built on a definition of Nanotechnology that adopts a broader and more inclusive definition of nanomaterials. This is consistent with the findings of the UK House of Lords Science and Technology Committee:

  • We recommend that the Government should work towards ensuring that any regulatory definition of nanomaterials proposed at a European level, in particular in the Novel Foods Regulation, should not include a size limit of 100nm but instead refer to ‘the nanoscale’ to ensure that all materials with a dimension under 1000nm are considered.A change in functionality, meaning how a substance interacts with the body, should be the factor that distinguishes a nanomaterial from its larger form within the nanoscale.

UK House of Lords Science and Technology Committee
Nanotechnologies and Food (8 January 2010)
Recommendation 12, p.76

http://www.publications.parliament.uk/pa/ld/ldsctech.htm

This is in contrast with Health Canada policy which looks at narrow definition of nanomaterials:

  • Health Canada’s Science Policy Directorate announced the adoption of the Interim Policy Statement on Health Canada’s Working Definition for Nanomaterials and its posting on the Health Canada website 2 March 2010. This Government of Canada policy adopts a 1-100nm “inclusive” regulatory benchmark, effective immediately, with a public comment period underway.

http://www.hc-sc.gc.ca/sr-sr/consult/_2010/nanomater/index-eng.php

ED. NOTE: I made an error in my question, the proposed nano inventory by Environment Canada was announced in Jan. 2009. My postings on the announcement are here and here. The odd thing about the announcement was that it was made initially by PEN which is located in Washington, DC and subsequently picked up by Canadian news media. As far as I know, Environment Canada has never offered comment about its 2009 plan for a nanotechnology inventory.

Tomorrow Julian wraps up with answers to questions about why someone who’s shadow portfolio includes international trade is interested in nanotechnology and the potential costs for his proposed legislation.

Peter Julian interview Part 1, Part 3, Comments: Nano Ontario, Comments: nanoAlberta

More on the UK 2010 Nanotechnologies Strategy Report

Dexter Johnson over on Nanoclast has done some detective work in a bid to understand why the market numbers used in the report differ wildly from anyone else’s. From Dexter’s posting,

It [the report] quotes market numbers for nano-enabled products that are such a drastic departure from most estimates that it leaves one questioning why tens of billions of dollars are being poured in by governments around the world to fund research.

If you have it, do take the time to follow along as Dexter  trails the company that the UK government used as its source for their market numbers. Amongst other names, I recognized one, ObservatoryNANO. (It was an organization I followed briefly and dismissed as being frivolous.)

One other commenter has emerged, Tim Harper. Now as the  principle of a nanotechnology business consulting company (Cientifica) some might be inclined to dismiss his comments but they have the ring of honest frustration and a sincere desire to contribute. From Harper’s posting,

Every UK nanotech report to date has excluded any data provided by UK companies. Even offers of free copies of our market research to government committees looking into various bits of nanotechnology provoke the same response as if we’d offered them a fresh dog turd wrapped in newspaper.

And now for a complete change of pace,

Dylan Thomas and neuroscience

There‘s an event tonight  (Thursday, March 25, 2010) in Vancouver being put on by the Dylan Thomas Circle (he lived in North Vancouver for a time as he worked on Under the volcano). It’s being held at the Red Dragon Pub at the Cambrian Hall on 17th & Main St.  Doors open at 6:45 pm and the presentation starts at 7:30 pm followed by an open reading. From the news release,

THE DYLAN THOMAS CIRCLE OF VANCOUVER presents

“Dylan Thomas, Creativity and Neuroscience”

Ariadne Sawyer will lead an exploration into creativity and the creative process as manifest through the works and the life of Dylan Thomas. She will investigate why we are creative, what happens during the creative process and what effect it has upon us.

This will be followed by an intermission and an: ‘OPEN READING’: an invitation to everyone who is interested to read aloud a poem or literary excerpt of their choice. This can be your own work, Dylan’s work or any other writer’s material. Most importantly, it is our chance to indulge in a little of our own creativity and to do it in a relaxed and in a friendly atmosphere.

About Ariadne Sawyer:

Ariadne has done on line Performance Plus Coaching with trainees from England, France, Canada and the United States for the last two years. She has received the Award of Excellence given by McLean-Hunter for the Brain Bulletin Series. Ariadne publishes an electronic newsletter called: Ariadne’s Performance Plus Newsletter along with Performance Plus Tips which are sent to all the participating trainees. She also co-hosts a weekly radio program on CFRO 102.7 FM, which has been on the air for the past two years. The Performance Plus Mini Course has been presented on the show with astounding success. She has two electronic courses available soon on the Internet. Performance Plus Level One and the Performance Plus Diplomacy Course. Ariadne has worked with trainees from Europe, the US and across Canada.

Nanotech BC scoop: part 3 interview with Victor Jones

Belated Happy Victoria Day! We (Canadians) just celebrated a long weekend and so I’m a day later than I planned for posting the third and final part of the Victor Jones (former chair of Nanotech BC) interview.

(5) I mistakenly guessed that Darren Frew (former executive director) was the Nanotech BC representative going to the big nanotechnology conference in Japan during February 2009 when in fact it was you. How did it go? NANOTECH 2009 – TOKYO – WAS  VERY GOOD.  THERE WERE  OVER 70  CANADIANS THERE AND BY ALL ACCOUNTS MOST FOUND IT VERY USEFUL FOR COLLABORATIVE RESEARCH OR BUSINESS DEVELOPMENT.  ONLY MYSELF FROM BC.    THE EMBASSY STAFF IN TOKYO WERE VERY HELPFUL AND THE CANADIAN BOOTH WAS BUSY.    ATTENDANCE REACHES ALMOST 50,000     FOLLOW ON WORK WAS PENDING

I COULD SAY A LOT MORE…..IT IS A FULL WEEK IN MEETINGS   SEMINARS AND TRADE SHOW….

(6) Where are things going? Will Nanotech BC rise again? Or will something new rise from the ashes? I LEAVE THIS TO MICHAEL (ALLDRITT – DIRECTOR – AT NRC-IRAP) AND THE BOARD  –  THERE ARE SEVERAL POSSIBILITIES……  THE LEGAL NOT FOR PROFIT ORG EXISTS AND ITS FUTURE IS OPEN.  THERE IS NO DOUBT THAT THIS ARENA CONTINUES TO GROW AS  STATED STRATEGIC IMPORTANCE FOR MANY COUNTRIES, REGIONS AND CITIES.  NANOTECH BC  WAS A LEADER IN ITS ASSET MAP WORK – NOW BEING REPLICATED IN ALBERTA; AND BC HAS SOME WORLD CLASS WORK GOING ON;       THERE ARE SIMILARITIES TO THE VERY EARLY DAYS OF BIOTECH. / GENOMICS; BUT CHALLENGES TOO …..

I wonder why the province of BC was dragging its feet about funding the organization. Given the amount of money being invested by governments and business around the world, you’d think that there would be more interest. I did look for a science policy on the provincial government website and was not able to find one.

Two researchers (Jennifer Pelley and Marc Saner) from the Regulatory Governance Initiative at Carleton University (Ottawa, Canada) have produced a report outlining the regulatory approaches toward nanotechnology from five different jurisdictions. From Nanowerk News,

Authored by Jennifer Pelley and Marc Saner, this report investigates the question: “How have Canada and other jurisdictions reacted to the recent emergence of nanotechnology-based products in the marketplace (and what is the current state of affairs)?” Our survey focuses on five key jurisdictions: the United States (US), the United Kingdom (UK), the European Union (EU), Australia, and Canada.

There’s more about the report here and the report is here.

One final thing, Discover Magazine has a blog called ‘Science not Fiction‘ which features the ‘Codex Futurius’, a Q & A for science/fiction questions directed to experts. They have an answer to a question about grey goo.