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Old 06-03-2022, 12:56 PM
 
Location: Fortaleza, Brazil
3,505 posts, read 5,823,731 times
Reputation: 1990

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Well, apparently patent US11258379B2 was granted on February 22nd 2022 by the US Patent Office for "quantum devices for harvesting and generating electrical energy" according to this Google Patents link:

https://patents.google.com/patent/US11258379B2/en

Quote:
Abstract
Described herein are devices in which quantum noise is reduced, such as by incorporating the devices as part of or adjacent to a Casimir cavity. The devices with reduced quantum noise can be paired with a free-space electric device to allow for a difference in noise power between the two to be captured.

FIELD
This invention is in the field of electronic devices. This invention relates generally to quantum devices for harvesting and generating electrical energy.

BACKGROUND
According to quantum theory the quantum vacuum is filled with electromagnetic radiation in the form of quantum vacuum fluctuations, and devices exhibiting associated quantum noise. There has been substantial discussion about whether this energy can be harvested, and if so, how. A chief problem in harvesting this energy is that it forms the energy ground state, and so it does not flow from one region to another. However, the quantum vacuum energy is geometry-dependent, and its density is lower in a Casimir cavity than outside of the Casimir cavity. The use of Casimir cavities therefore opens the possibility of making use of the quantum vacuum fluctuations to drive energy from one location to another.

SUMMARY
Devices for generation of electrical energy are described herein. In embodiments, devices described herein use two different regions in which the zero-point fluctuations are different to allow a portion of noise power arising from the zero-point fluctuations to be harvested.

I'm not sure about what a "Casimir cavity" is, but I imagine it must have something to do with the Casimir effect:

https://en.wikipedia.org/wiki/Casimir_effect

So, maybe there is a way to harvest so called "zero-point energy" after all?
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Old 06-03-2022, 02:34 PM
 
Location: Fortaleza, Brazil
3,505 posts, read 5,823,731 times
Reputation: 1990
I remember reading years ago that the dynamical Casimir effect, a variation of the Casimir effect, could turn "virtual photons" into real photons, that means extracting particles from the vacuum. Photons and electromagnetic waves are the same thing, according to the wave-particle duality...
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