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June 16, 2015 10:00 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/mjX7EQWrbCs/energy-harnessed-from-humidity-can-power-small-devices
Energy Harnessed From Humidity Can Power Small Devices
sciencehabit writes: Scientists have built small devices that generate electricity by harnessing changes in the ambient humidity. This is done through the use of dormant bacterial spores which expand when they absorb moisture from the air. To prove the concept, researchers attached the spores to one side of a curved polymer sheet, and when the spores absorbed humidity from the air, the sheet straightened out. Coupling this movement with an electromagnetic generator allowed them to harvest enough energy to power small devices like an LED and a 100-gram toy car.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/mjX7EQWrbCs/energy-harnessed-from-humidity-can-power-small-devices
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