Abstract
A study based on nonlocal continuum elastic theory is presented on the acoustic properties of single-walled noncarbon nanotubes, including boron nitride (BN), aluminum nitride (AlN), gallium nitride (GaN), aluminum phosphide (AlP), gallium phosphide (GaP), and boron (B) nanotubes. Elastic characteristics of the noncarbon nanotubes needed to describe the elastic waves propagation correctly have been defined previously. Two-dimensional densities (2D densities) for each type of noncarbon nanotubes are calculated. The values of propagation velocities of longitudinal and torsional elastic waves for proposed nanotubes with different diameter and chirality are obtained. Specific result is that in boron nanotubes sound propagates at a speed equal 54 km/s.
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