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- W1526018233 abstract "We study the carbon nanotube Schottky barrier at the metallic electrode interface in polarized gases using an equivalent circuit model. The gas-nanotube interaction is often weak and very little charge transfer is expected [l]. This is the case with'oxygen, but the gas-electrode interaction is appreciable and makes the oxygen molecules negatively charged. In the closed circuit condition, screening positive charges appear in the nanotube as well as in the electrode, and the Schottky barrier is modulated due to the resultant electrostatic effects [2]. In the case of ammonia, both the gas-nanotube and gas-electrode interactions are weak, but the Schottky barrier can still be modulated since the molecules are polarized and align in the preferred orientation within the gap between the electrode and nanotube in the open circuit condition (dipole layer formation). In the closed circuit condition, an electric field appears in the gap and strengthens or weakens the preferred dipole alignment reflecting the nanotube Fermi level. The modulation is visible when the nanotube depletion mode is involved, and the required dipole density is as low as 2 x 10(exp 13) dipoles/sq cm, which is quite feasible experimentally," @default.
- W1526018233 created "2016-06-24" @default.
- W1526018233 creator A5002321082 @default.
- W1526018233 date "2005-03-22" @default.
- W1526018233 modified "2023-09-23" @default.
- W1526018233 title "Equivalent Circuit Modeling for Carbon Nanotube Schottky Barrier Modulation in Polarized Gases" @default.
- W1526018233 hasPublicationYear "2005" @default.
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