Body Heat
Yup thats right use your own body heat to create power .
Juice it up in order to charge your cell phone .
This new technique uses a felt material and carbon nanotubes .
So check it out straight out of the archives of jamshardware I give you power felt .
http://www.tomshardware.com/news/science-research-power-Felt-heat,14789.html
In Conclusion
The only thing that threw me was the pure mention of carbon .
But hey who knows it could be totally harmless and it is a nano technology you should check out my previous articles in the nano field called ( nanowhiskers ) if ya have the time .
Peace I am out .