Piezoelectric Generators
Teahouse writes: "The U.S. Navy has developed this polymer "eel" that they dump in the water and get a trickle charge back. The biggest application for this would be for deep sea bouys that track weather across the pacific. This could extend accuracy, and lifespans...and save a few lives along the way. Here is the story." NOAA uses buoys that are solar powered and are left out for a year or more at a time, but I imagine that if this worked they'd be interested, too.
I have been doing a reserch paper on this stuff, some great resources also found at:
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7 /p37.html
http://www.piezo.com/kgs.html
http://www.avxcorp.com/prodinfo_productdetail.asp
http://www.ndt.net/article/yosi/yosi.htm
http://www.tokin.com/Tokin_America_Products/37/p3
http://www.biospec.com/HomePage/Review.html
http://www.morganelectroceramics.com/pzmat1.html
Have fun...
Two infinite things: your stupidity and mine. But I'm not sure about the latter. If my sig offends you, I'm sorry.