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Physicists Build Circuit That Generates Clean, Limitless Power From Graphene
A team of University of Arkansas physicists has successfully developed a circuit capable of capturing graphene's thermal motion and converting it into an electrical current.
“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,” said Paul Thibado, professor of physics and lead researcher in the discovery.
The findings, published in the journal Physical Review E, are proof of a theory the physicists developed at the U of A three years ago that freestanding graphene — a single layer of carbon atoms — ripples and buckles in a way that holds promise for energy harvesting.
By all measures, graphene shouldn't exist. The fact it does comes down to a neat loophole in physics that sees an impossible 2D sheet of atoms act like a solid 3D material.
Strange Atomic Ripples in Graphene Could Unlock Clean, Limitless Energy
It turns out the 'loophole' was the random jiggling of atoms popping back and forth, giving the 2D sheet of graphene a handy third dimension.
In other words, graphene was possible because it wasn't perfectly flat at all, but vibrated on an atomic level in such a way that its bonds didn't spontaneously unravel.
circuit capable of capturing graphene's thermal motion and converting it into an electrical current
Right now it is hard to produce useful “sheets” of pure graphene. They can only be made at a very small scale(AFAIK).
originally posted by: TEOTWAWKIAIFF
a reply to: ChaoticOrder
They were supposed to have graphene light bulbs but a patent suit happened.
And like the Kennedy Assassination it has reached ridiculous heights!
Mass production of sheets hasn’t happened. I am pretty sure other versions of graphene production has but not sheets.
A sheet of graphene produced in rolls changes our world in ways we can only dream of.
The word "limitless" used by Paul Thibado, professor of physics and lead researcher in the discovery in the story linked from the OP seems like hyperbole, it would have limits. It doesn't violate any laws of physics that I can see. If it's at room temperature, it has thermal energy and if extracting that reduces the temperature, as long as there's a thermal reservoir around it to re-supply more thermal energy, then no laws of physics are violated. But, that thermal reservoir is a limit, albeit it could be a big limit, but it's a limit nonetheless.
originally posted by: dragonridr
Im going to say im skeptical you can harvest energy from Brownian motion. yes it violates our understanding of physics because you could create an unlimited energy source from things wiggling in any solution.
Yes, you certainly should have made a separate thread instead of hijacking this one.
originally posted by: midnightstar
Well I should make a thread My self .
You're telling us we can do the experiment but you haven't actually done it yourself, right? If you have, how much energy did your generator generate?
All It takes to prove this is 2 5 gallon Buckets - 10 Pices of 1/2 PVC pipes and SPUNGES to FILL the PIPS with .
Set up Right the water is DRAWEN from the LOWER BUCKET to the HIGHER bucket through capillary action FROM the SPUNGES stuck Inside the PIPES once In the UPPER Bucket the water can go BACK down through another pipe with a generator that the water spins as It flows down to start all over in the lower Bucket a closed system BUT NOT perpMotion as without capillary action it cant work .
...Many may know of hemp's use as a building material or medicine, but seldom know it can be used as a supercapacitor. A capacitor is a device used to store electric charge on one or more pairs of conductors separated by an insulator.
...Naturally, graphene is undergoing extensive research regarding capacitors. It can hold an impressive amount of electrons and can discharge practically instantly, giving power as quickly as it is needed. But graphene batteries are absurdly expensive, and hemp-based capacitors are proving to be a viable alternative.
...“Our device’s electrochemical performance is on par with or better than graphene-based devices,” says David Mitlin, one of the key researchers of hemp-based capacitors. “The key advantage is our electrodes, they are made from bio-waste using a simple process, and therefore, are much cheaper than graphene.”
The hemp-based carbon nanosheets also allegedly outperform standard supercapacitors by nearly 200%.