Abstract
We report a novel phenomenon in carbon nanotube based ultra-fast mechanical devices, thetrans-phonon effect, which resembles the transonic effects in aerodynamics. It is causedby dissipative resonance of nanotube phonons similar to the radial breathingmode, and subsequent drastic surge of the dragging force on the sliding tube,and multiple phonon barriers are encountered as the intertube sliding velocityreaches critical values. It is found that the trans-phonon effects can be tuned byapplying geometric constraints or varying chirality combinations of the nanotubes.
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