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Electricity generation from single water drop...


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Stuff falling can generate electricity by squeezing 2 plates together. This includes falling things as small as raindrops. This team found a way to make this process even more efficient and gather more power from each drop with less loss. 

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It appears that a single droplet of water can generate 50nC at 140v i.e. 7 microjoules.

And a litre of water/second falling from 15cm can generate 70mW. I suppose that's about 1.5W of kinetic power so the efficiency is quite impressive.

 

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