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| sanman |
Posted: Apr 16 2004, 09:09 PM
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I was reading the latest CoolChips press release,
http://www.coolchips.gi/press/pr_040324.shtml which mentions the fact that it exploits quantum tunnelling, and it made me wonder whether this approach amounts to a form of Quantum Mechanical Catalyst. It is Quantum Mechanical phenomena which are causing the electrons to traverse the nano-gap (tunnelling), and so these quantum effects are acting as a catalyst by making possible the heat transfer to begin with. Unfortunately, there doesn't seem to be a way to remove quantum tunnelling effects to compare against a non-catalyzed situation. However, I would assume that if you brought things closer to absolute zero, then the quantum tunnelling would still work unhindered to transfer heat, whereas a purely thermionic setup wouldn't be able to jump that gap at all. I guess we don't have to think about how to harness such effects towards catalysis of molecular reactions, since Van der Waals forces already represent this. But what about transistor-style gate or switch applications? Is this what a Field-Effect Transistor already does? What other applications could quantum mechanical catalysis be used for, which haven't already been done? Could it be used in some way for resistance-free current flow? If you had a series of nano-sized elements lined front-to-back and separated by nano-gaps, where the frontside of each had the lower work function and the backside of each had the higher work function, could the quantum tunnelling alone kick the current along in appreciable quantities? Each element could perhaps be nano-sized if not molecule-sized. Also, since the outward bulging ends of nanotubes are known to have good emission properties (low work function), is it possible to have a concave nanotube end which bulged inward? I'd assume that a concave-inward bulge might have a correspondingly high work function. I was just imagining a series of short nanotubes (nano-capsules) each having one end which bulged out normally, but with the other end bulging inward. These would then be lined front-to-back in the manner I described above, like a train of bullets. Or could a chain of quantum dots do the same thing, if they were all separated by nano-gaps? |
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| sljkfd |
Posted: Apr 17 2004, 02:34 PM
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lksjfd;a
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| boit |
Posted: Dec 5 2010, 02:19 PM
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Moran of the Burning Spear ![]() ![]() ![]() ![]() ![]() Group: Power Member Posts: 2532 Joined: 13-March 08 Positive Feedback: 62.16% Feedback Score: 25 |
I have just finished reading the linked page. Is it like cold fusion? I read somewhere that quantum tunneling makes use of the uncertainty principle. We know the velocity but we can't place the position of the particle. This way we are able to sneak two nucleons close enough thus bypassing the a good fraction of electromagnetic repulsion barrier.
-------------------- Boit was last taught physics in class way back in 1994. Whatever he's learnt thereafter is purely by personal effort through this forum and searching the net. He is not an authority in any matter science. Unless with clear referrence, what he puts forward is his own understanding of what he has read and may not always be correct. Peace.
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