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Advances in Acoustics and Vibration
Volume 2012 (2012), Article ID 637912, 10 pages
http://dx.doi.org/10.1155/2012/637912
Research Article

Modelling Reflection and Transmission of Acoustic Waves at a Semiconductor: Fluid Interface

Department of Mathematics, National Institute of Technology, Hamirpur 177005, India

Received 25 May 2011; Revised 30 October 2011; Accepted 17 December 2011

Academic Editor: Joseph CS Lai

Copyright © 2012 A. Sharma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The paper concentrates on the study of reflection and transmission characteristics of acoustic waves at the interface of a semiconductor half-space underlying an inviscid liquid. The reflection and transmission coefficients varying with the incident angles are examined. Calculated results are verified by considering the quasilongitudinal ( 𝑞 𝑃 ) and quasitransverse ( 𝑞 𝑆 𝑉 ) waves. The special cases of normal and grazing incidence are also derived and discussed. Finally, the numerical computations of reflection and transmission coefficients are carried out with the help of Gauss elimination method by using MATLAB programming software for silicon (Si) and germanium (Ge) semiconductors. The computer simulated-results have been plotted graphically for Si and presented in tabular form in case of Ge semiconductors. The study may be useful in semiconductors, geology, and seismology in addition to surface acoustic wave (SAW) devices.