Milan Karki, a young inventor from rural Nepal, claims to have figured out a way to replace the silicon in solar panels with human hair. From the Daily Mail
Milan and four classmates initially made the solar panel as an experiment but the teens are convinced it has wide applicability and commercial viability.
'I'm trying to produce commercially and distribute to the districts. We've already sent a couple out to the districts to test for feasibility,' he said.
The solar panel, which produces 9 V (18 W) of energy, costs around £23 to make from raw materials.
(among others) is skeptical:
if you head over to the Daily Mail and look at the photos, you'll see that the hair covers only a very small surface area on the prototype. This doesn't look like it would be enough to generate the electricity they claim to generate. In fact, if we extrapolate from that small surface area, this implies that a panel completely covered would produce much more power; possibly more than what is possible based on how much solar energy hits that surface