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Running an LED in Reverse Could Cool Future Computers

posted by martyb on Tuesday February 19 2019, @08:27PM   Printer-friendly
from the does-it-also-make-the-room-darker? dept.

karthikaqpt writes:

Researchers at the University of Michigan ran a light emitting diode (LED) with electrodes reversed in order to cool another device mere nanometers away. The approach could lead to new solid-state cooling technology for future microprocessors, which will have so many transistors packed into a small space that current methods can’t remove heat quickly enough.

This could turn out to be important for future smartphones and other computers. With more computing power in smaller and smaller devices, removing the heat from the microprocessor is beginning to limit how much power can be squeezed into a given space.

https://www.rtoz.org/2019/02/18/running-an-led-in-reverse-could-cool-future-computers/

[How does this compare to a Peltier device?

--Ed.]

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  • (Score: 0) by Anonymous Coward on Tuesday February 19 2019, @09:35PM (1 child)

    by Anonymous Coward on Tuesday February 19 2019, @09:35PM (#803692)

    i'm not sure that your "net increase of power dissipation" is a thing here -- since the ir-heat-photon-energy flows right out of the system. if you found something to indicates that this sort of draining would really add a 25% heat dissipation tax to the system, please cite! i'd expect the 'receiver' to be of very high resistance and 'the tax' to be very very low, perhaps even neutral to negative.

  • (Score: 4, Touché) by c0lo on Tuesday February 19 2019, @10:34PM

    by c0lo (156) Subscriber Badge on Tuesday February 19 2019, @10:34PM (#803712) Journal

    i'd expect the 'receiver' to be of very high resistance and 'the tax' to be very very low, perhaps even neutral to negative.

    Right! So the higher the resistance the better, eh?
    Geni(t)us idea: let's make it infinite by not connecting the diode terminals and we may even get a perpetuum mobile. Even better, with one less electronic component, thus cheaper.

    --
    https://www.youtube.com/@ProfSteveKeen https://soylentnews.org/~MichaelDavidCrawford