TY - JOUR
T1 - Acoustic Phonon Transmission and Thermal Conductance in a Three-Stub Quantum Waveguide
AU - Zhang , Jian-Hua
JO - Journal of Atomic and Molecular Sciences
VL - 1
SP - 65
EP - 73
PY - 2011
DA - 2011/02
SN - 2
DO - http://doi.org/10.4208/jams.102110.111410a
UR - https://global-sci.org/intro/article_detail/jams/8105.html
KW - T-shaped quantum waveguide, scattering matrix method, acoustic transmission coefficient, thermal conductance.
AB - <p style="text-align: justify;">Using the scattering matrix method, we investigate the acoustic phonon transmission and thermal conductance in a quantum waveguide with three stubs at low temperature. It is found that transmission coefficient shows periodic feature and the number of cutoff frequency bands increases with increasing of height h; and the thermal conductance exhibits oscillatory decaying behavior with increasing of the widths between any two stubs; In addition, thermal conductance is sensitive to the width and height of stubs; The results show that changing the geometric parameters of the stubs could provide an efficient way to control the thermal conductance of the proposed micro-structures artificially.</p>