Trans-phonon effects in ultrafast nano-devices

Details Trans-phonon effects in ultrafast nano-devices Trans-phonon effects in ultrafast nano-devices

2007-09-07

arxiv.org/abs/0709.0989v1

Nanotechnology 19, 255705 (2008)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1088/0957-4484/19/25/255705

We report a novel phenomenon in carbon nanotube (CNT) based devices, the transphonon effects, which resemble the transonic effects in aerodynamics. It is caused by dissipative resonance of nanotube phonons similar to the radial breathing mode, and subsequent drastic surge of the dragging force on the sliding tube, and multiple phonon barriers are encountered as the intertube sliding velocity reaches critical values. It is found that the transphonon effects can be tuned by applying geometric constraints or varying chirality combinations of the nanotubes.

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