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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: 2) by krishnoid on Tuesday February 19 2019, @08:48PM (5 children)

    by krishnoid (1156) on Tuesday February 19 2019, @08:48PM (#803662)

    Now no longer a light emitter, it's now a light sucking diode, with its concomitant psychedelic effects.

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  • (Score: 2) by PartTimeZombie on Tuesday February 19 2019, @09:07PM (4 children)

    by PartTimeZombie (4827) on Tuesday February 19 2019, @09:07PM (#803670)

    It still emits, but it is now emitting dark instead of light.

    • (Score: 1) by fustakrakich on Tuesday February 19 2019, @09:15PM (3 children)

      by fustakrakich (6150) on Tuesday February 19 2019, @09:15PM (#803677) Journal

      Does it make the room darker?

      --
      La politica e i criminali sono la stessa cosa..

      • (Score: 2) by DannyB on Tuesday February 19 2019, @09:20PM

        by DannyB (5839) Subscriber Badge on Tuesday February 19 2019, @09:20PM (#803683) Journal

        Not if the room is already at absolute dark.

        I'm now going to run a resistor in reverse polarity to increase current flow in the circuit.

        What happens to the temperature if I put the reverse polarity LED in series with the reverse polarity resistor?

        --
        The lower I set my standards the more accomplishments I have.

      • (Score: 2) by PartTimeZombie on Tuesday February 19 2019, @10:08PM (1 child)

        by PartTimeZombie (4827) on Tuesday February 19 2019, @10:08PM (#803698)

        Yes, unless the room is at absolute dark, as DannyB has pointed out. (Obviously).

        • (Score: 1) by fustakrakich on Tuesday February 19 2019, @11:26PM

          by fustakrakich (6150) on Tuesday February 19 2019, @11:26PM (#803755) Journal

          You gotta have pretty good night vision to go around hooking up LEDs and resisters in the dark, don't you?

          --
          La politica e i criminali sono la stessa cosa..