scerir at libero.it
Wed Oct 29 11:09:48 UTC 2003
Ii is also possible to couple mechanical and charge motion
together in subtle and interesting ways, with NEMS.
In example: the mechanical charge shuttle which seems to be
an electro-mechanical transistor, but, perhaps, also an
engine (???). Oscillations of a 'clapper' periodically alter
tunneling barriers between an electron island and a source/drain.
Result is a pumping of a charge due to mechanical motion.
At room temperature: ~ 1000 electrons per oscillation are
pumped. At 4.2 K: ~ 0.11 electrons per oscillation are pumped.
If the system were sufficiently fine-tuned, it should be
possible to get a single electron pumping even at room temperature.
first paper ^
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