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Technology

Building nanomachines out of living bacteria

By Will Knight

30 March 2005

LIVE bacteria could one day act as reconfigurable components for nanoscale electronic circuits, or even a scaffold for building nanomachines.

“Nature has developed these fantastic building blocks,” says Robert Hamers of the University of Wisconsin-Madison. “Our approach is to simply grab onto them very gently.” His team have been using electrodes to manipulate individual bacterial cells, they will report in a future issue of Nano Letters.

Their chosen bacterium was Bacillus mycoide, 5 micrometres long and 0.8 wide – large enough to be visible under an optical microscope. The trick is to apply an electric field to the microbes, so…

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