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Biofuel cell generates electricity when implanted in False Death's Head Cockroach
by Staff Writers
Washington DC (SPX) Mar 29, 2012

False Death's Head Cockroach.

The latest episode in the American Chemical Society's (ACS) award-winning "Global Challenges/Chemistry Solutions" podcast series describes an advance in biofuel technology using a living cockroach.

Scientists have developed and implanted into a living insect - the False Death's Head Cockroach - a miniature fuel cell that converts naturally occurring sugar in the insect and oxygen from the air into electricity.

They term it an advance toward a source of electricity that could, in principle, be collected, stored and used to power sensors, cameras, microphones and a variety of other microdevices attached to the insects. A report on the study appears in the Journal of the American Chemical Society.

In the podcast, Daniel Scherson, Ph.D., who is at Case Western Reserve University and is the study's lead author, explains that scientists are developing ways to generate electricity from chemicals inside living things, or from their movements, to power implanted sensors or other miniature devices.

Such devices could provide researchers or physicians with important information about processes going on inside insects, animals or even people without the need for batteries. They also could someday power artificial organs, nanorobots or wearable personal electronics.

But before such "sci-fi"-sounding advances can be realized, practical biofuel cells are necessary. That's why Scherson and colleagues developed an implantable biofuel cell for use in a live cockroach.

The biofuel cell uses a sugar in the cockroaches' bodies called trehalose and oxygen from the air to generate electricity. The fuel cell did not kill the insects or impair functioning of their internal organs.

The researchers also implanted the device into a Shiitake mushroom, and it worked. Neither fuel cell - in the roach or the mushroom - produced a large amount of energy, so any microdevice that requires high power could operate only intermittently. The electricity generated by the biofuel cell in principle, could be collected and stored and subsequently used to power a variety of microdevices.

The new podcast is available here without charge.

Related Links
American Chemical Society (ACS)
Bio Fuel Technology and Application News

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