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Bacteria-powered battery improve on single sheet of paper

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Scientists have developed a bacteria-powered battery on a single sheet of paper that can power disposable electronics such as diagnostic sensors.

The manufacturing technique reduces fabrication time and cost, and the design could revolutionise the use of bio-batteries as a power source in remote, dangerous and resource-limited areas, researchers said.

“Papertronics have recently emerged as a simple and low-cost way to power disposable point-of-care diagnostic sensors,” said Seokheun Choi, Assistant Professor at Binghamton University in the US.

“Stand-alone and self-sustained, paper-based, point-of-care devices are essential to providing effective and life-saving treatments in resource-limited settings,” said Choi.

On one half of a piece of chromatography paper, Choi and PhD candidate Yang Gao, placed a ribbon of silver nitrate underneath a thin layer of wax to create a cathode.

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