3 ms·

Isnt this Maxwell's demon ? The paper is pay-walled so could not read the mandatory discussion on 2nd law of thermodynamics. The underlying idea is not new. Br

by srean 3y ago

Isnt this Maxwell's demon ? The paper is pay-walled so could not read the mandatory discussion on 2nd law of thermodynamics. The underlying idea is not new. Brillouin published Can the Rectifier Become a Thermodynamical Demon? in 1950 [0] [1]. I hope these are cited in the paper. [0] https://journals.aps.org/pr/abstract/10.1103/PhysRev.78.627.2 https://journals.aps.org/pr/abstract/10.1103/PhysRev.78.627.... [1] https://pubs.aip.org/aip/apl/article-abstract/14/2/54/41611/SPONTANEOUS-REVERSE-CURRENT-DUE-TO-THE-BRILLOUIN https://pubs.aip.org/aip/apl/article-abstract/14/2/54/41611/... https://en.wikipedia.org/wiki/Maxwell%27s_demon https://en.wikipedia.org/wiki/Maxwell%27s_demon https://en.wikipedia.org/wiki/Brownian_ratchet https://en.wikipedia.org/wiki/Brownian_ratchet

loa_in_ 3y ago
Reminds me more of the self winding watch mechanism [1] but using the ever vibrating world we also need to live instead of the locomotion of the wearer. [1] https://en.wikipedia.org/wiki/Automatic_watch https://en.wikipedia.org/wiki/Automatic_watch
Extigy 3y ago
There’s a non-paywall version on arXiv: https://arxiv.org/abs/2308.09083 https://arxiv.org/abs/2308.09083 The paper you mention is indeed cited.
- Animats 3y ago
  "A series of these units may be built on an integrated circuit with each using a space of less than 0.1 square microns, with the potential to produce a significant power density." Huh. Is this for real? Most of the discussion assumes an ideal diode. Real diodes have diode drop. All this is powered by very small fluctuations, right. They'd have to overcome the diode drop. (There is a real component called an "ideal diode", which is a power MOSFET with control circuitry to turn it on when the voltage is higher in the forward direction. MOSFETs have ON resistances in millohms, which is better than diodes can do. Often used with solar powered battery chargers, large DC-DC converters, etc. Not sure that applies here.)

by srean 3y ago

loa_in_ 3y ago

Reminds me more of the self winding watch mechanism [1] but using the ever vibrating world we also need to live instead of the locomotion of the wearer. [1] https://en.wikipedia.org/wiki/Automatic_watch https://en.wikipedia.org/wiki/Automatic_watch

Extigy 3y ago

There’s a non-paywall version on arXiv: https://arxiv.org/abs/2308.09083 https://arxiv.org/abs/2308.09083 The paper you mention is indeed cited.

Animats 3y ago
"A series of these units may be built on an integrated circuit with each using a space of less than 0.1 square microns, with the potential to produce a significant power density." Huh. Is this for real? Most of the discussion assumes an ideal diode. Real diodes have diode drop. All this is powered by very small fluctuations, right. They'd have to overcome the diode drop. (There is a real component called an "ideal diode", which is a power MOSFET with control circuitry to turn it on when the voltage is higher in the forward direction. MOSFETs have ON resistances in millohms, which is better than diodes can do. Often used with solar powered battery chargers, large DC-DC converters, etc. Not sure that applies here.)