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Amplification of Acoustic Waves in Piezoelectric Semiconductor Shells

Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526, USA, jyang1{at}unl.edu

Xiaomeng Yang

Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526, USA

Joseph A. Turner

Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526, USA

Two-dimensional equations for multilayered shells of piezoelectric semiconductors are derived. The equations are used to analyze the propagation of torsional waves in a single-layered circular cylindrical shell of a piezoelectric semiconductor, and in a multilayered shell of nonconducting piezoelectrics and nonpiezoelectric semiconductors. Dispersion and dissipation due to semiconduction as well as wave amplification by a biasing DC electric field are discussed.

Key Words: piezoelectricity • semiconductor

Journal of Intelligent Material Systems and Structures, Vol. 16, No. 7-8, 613-621 (2005)
DOI: 10.1177/1045389X05051626


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