Abstract
A generalized scattering boundary equation method (SBM) is proposed for the calculation of the vibrational amplitude transmission across solid junctions. An energy transmission expression with relation to atomic masses, lattice constants, and group velocities is elucidated. The phonon transmission is computed by the SBM for an (11,0)--(8,0) nanotube junction. The strongly mode-dependent energy transmission observed can be ascribed to the mismatch in symmetry of the vibrational motions, indicating its possibly important role in thermal transport in nanotubes.
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