Technology Physicists build circuit that generates clean, limitless power from graphene

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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.

The idea of harvesting energy from graphene is controversial because it refutes physicist Richard Feynman's well-known assertion that the thermal motion of atoms, known as Brownian motion, cannot do work. Thibado's team found that at room temperature the thermal motion of graphene does in fact induce an alternating current (AC) in a circuit, an achievement thought to be impossible.

In the 1950s, physicist Léon Brillouin published a landmark paper refuting the idea that adding a single diode, a one-way electrical gate, to a circuit is the solution to harvesting energy from Brownian motion. Knowing this, Thibado's group built their circuit with two diodes for converting AC into a direct current (DC). With the diodes in opposition allowing the current to flow both ways, they provide separate paths through the circuit, producing a pulsing DC current that performs work on a load resistor.


Read more here. (PhysOrg)
 
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    they did not winterize any of the plants and they froze
  • The Helper The Helper:
    it is not that power consumption went up it was available capacity went down with power plants freezing
  • Varine Varine:
    What a fucking disaster. Are all of the Texas people okay? I see TH is, are we the only two?
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    How have the other states held up? I just got power back so I have no idea what's going on, we didn't get warning
  • Varine Varine:
    Why the fuck didn't they fix this ten years ago when it happened?
  • Blackveiled Blackveiled:
    I'm in it with you and TH as well. My power has been in and out, and I have a ruptured pipe that I need to fix, shouldn't be too bad to fix myself.
  • Varine Varine:
    I hope you're staying warm! Apparently the supply is coming up so hopefully we can get back to normal power soon, mine has been on for six hours now.
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    My power has been off most of the last 2 days. We had a generator installed 3 years ago though, so we're staying warm. Water is another issue...
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    Where I live has a pool so we are using that to get water to flush the toilets. We have enough bottled water to drink and brush teeth and stuff but it has been a few days and no shower though....
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    I had some water in gallon jugs, and got our water back on yesterday. We don't seem to have any leaks, but I haven't crawled down there to look yet.
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    still no water I cannot remember when I last showered now I know how they felt in the old west lol
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    My poor plants are happy, they aren
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    aren't used to going this long without water or lights or normal heat. I think a couple of them froze, but they look like they'll make it
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    Well one of them is pretty rough but I think it was sick to begin with, that one always had some problems.
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    ???
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    That is such a Texas thing to say lol
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    a positive could come out of this. So many people trapped at home could put a dent in the covid numbers in Texas
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    That dude, Tom Boyd, is really upset about the backlash from his "it's your fault you're freezing" thing because he claims he resigned before saying it, so it wasn't like he said it in his official capacity or anything.
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    Almost as if he was saying "screw you guys, I'm going home"
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    I'm fairly new here still but that seems to be the analogous message by several of our politicians.
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