why not use our body movements to generate electricity?we can use a thin sheet of a piezoelectric such as PZT(lead zirconate titanate) strapped on to our body.Body movements cause compression of the sheet causing it to generate a voltage which can stored in a capacitor.The voltage produced might not be great but it can to be used to run ur walkmans/discmans.
-- dreamchaser, Dec 24 2002

Piezoelectric shoe research http://www.eetimes....ws/OEG20000519S0040
[krelnik, Oct 04 2004]

Piezo shoes http://www.halfbake.../idea/Piezo_20shoes
Very similar halfbaked idea by [rayfo] [krelnik, Oct 04 2004]

There have been a number of folks researching using piezo to harvest power for personal electronic devices, mostly from shoes. So far nobody seems to have productized it. See links.
-- krelnik, Dec 24 2002


1- because the components are way too expansive

2- there is much more thermal energy wasted around (well, in hot countries, that is)
-- sidi, Jan 21 2004


My watch is powered by my movements. Mmmm... kinetic.
-- Detly, Jan 22 2004



random, halfbakery