An energy-harvesting circuit based on graphene could be incorporated into a chip to provide clean, limitless, low-voltage power for small devices or sensors," says physicist Paul Thibado, from the University of Arkansas.
What happened to the whole "no free lunch" paradigm?
While the energy produced by freestanding graphene is likely to be quite small, it could one day be a replacement for low-power batteries – and it wouldn't need recharging or replacing.
Argh, how is this not a perpetual motion device?
@monsieuricon Generating minute amounts of electricity from thermal energy or stray EM radiation doesn't violate any laws of thermodynamics. It might look like "free" energy, but there's always a source somewhere.
@mansr I mean, I fully agree with you. :) My 5 years of taking care of computers at Duke Physics certainly left a mark on my understanding of basic laws of thermodynamics. This is exactly the reason why I get so distraught by articles from seemingly reputable sources that claim "free limitless energy" out of nowhere.
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