Between the EM drive and the graphene Brownian motion infinite power device I don't know that's real physics any more.
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?
"The origin of these nanometre-sized ripples is still an open question," the team writes in their study, noting that the graphene ripple seems to stem from subatomic particle interactions in the material.
Fuck yeah it's an open question.
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.
@monsieuricon There was this news in the beginning of year: https://www.cnx-software.com/2020/01/08/onio-zero-offers-a-risc-v-microcontroller-that-runs-without-battery/
I've checked the announcement from the folks at University of Arkansas but it doesn't contain any concrete numbers (volts, ampers, power or anything similar).
It's way over my head (they're using diodes to amplify the current, what the heck?), but it does have some numbers — apparently they manage to harvest about a hundred picoamperes.
Kernel.org after-party social