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Viral Batteries
Jamais Cascio, 26 Sep 05

The name of MIT's Dr. Angela Belcher has popped up a couple of times here on WorldChanging. A 2004 MacArthur "genius grant" winner, she works on the integration of biological processes and nanoscale materials. Now we can learn a bit more about the work that she's been doing:

Copying how red abalone build their shells, Belcher and her team are developing a way to actually "grow" rechargeable batteries with the help of viruses — tiny microbes that multiply by infecting living cells. Their technique would take a matter of weeks, rather than the 15 years the red abalone needs to assemble a full-sized shell.

"We're forcing the viruses to interact with materials that they would never interact with, normally. So now the viruses are a template to actually grow that material… it incorporates these new materials into its coat surface," Belcher explains.

The ScienCentral article includes a video description of the project and interview with Dr. Belcher, as well as links to some of Dr. Belcher's recent publications, including a 2000 article in Nature.

(Via MedGadget)

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There is essentially zero information about a nanoscale engineered battery in the article. All information I can find about that is contained in this one paragraph from Discover Magazine :

What is your focus right now?

Belcher: We have recently made the first virus-based rechargeable battery. We get really good energy density because our particles are really small. We have engineered the viruses so that each one is just about a micrometer long, has a thousand smaller particles on it, and can self-assemble. Battery stuff is happening quickly; this project is only one year old.

The article in the PNAS that is cited in the ScienCenter article is here:
Viral assembly of oriented quantum dot nanowires

This would be interesting to read, had it been published in a "open" scientific magazine:
Nano Letters, Programmable Assembly of Nanoarchitectures Using Genetically Engineered Viruses

Posted by: Bjorn van der Meer on 27 Sep 05



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