Carbon Nanotube FET: Gate Voltage and Conductance

Thread starter w.shockley
Start date Jan 31, 2012
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Carbon Conductance Fet Gate Voltage

AI Thread Summary

The discussion centers on the effect of applied voltage on the conductance of intrinsic carbon nanotubes, questioning the underlying physics since there is no population inversion like in MOSFETs. It highlights the role of Coulomb Blockade, which involves pure electrostatic interactions with charge carriers. Participants clarify that the conductance change is due to the manipulation of electron states rather than traditional carrier injection. The conversation emphasizes understanding the mechanisms behind carrier behavior in carbon nanotubes under voltage. Overall, the physics of conductance in carbon nanotubes is complex and influenced by electrostatic effects.

Jan 31, 2012

w.shockley

i don't understand how an applied Voltage on a (intrinsic) Carbon Nanotube could change its conductance... There is not a population inversion like in mosfet. So, which is the physics? Where this carriers can from?

thank you.

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Feb 18, 2012

jsgruszynski

It's called Coulomb Blockade. Pure electrostatic interaction with the carriers.

http://en.wikipedia.org/wiki/Coulomb_blockade

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