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Surface acoustic waves in two-dimensional periodic elastic structures

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Title: Surface acoustic waves in two-dimensional periodic elastic structures
Authors: Tanaka, Yukihiro1 Browse this author →KAKEN DB
Tamura, Shin-ichiro Browse this author →KAKEN DB
Authors(alt): 田中, 之博1
Issue Date: Sep-1998
Publisher: American Physical Society
Volume: 58
Issue: 12
Start Page: 7958
End Page: 7965
Publisher DOI: 10.1103/PhysRevB.58.7958
Abstract: Acoustic waves localized at the surface of two-dimensional (2D) periodic elastic structures, or 2D phononic crystals, are studied theoretically by taking account of the elastic anisotropy of constituent materials. The surface considered is perpendicular to the axis of a periodic array of cylinders embedded in a background material. The dispersion relations of the surface modes are calculated for circular cylinders of AlAs which form a square lattice in a GaAs matrix. The folding and anisotropy of the surface wave branches, as well as the existence of pseudosurface waves, are found. The stop band distributions of the surface, pseudosurface, and bulk waves are plotted in a form relevant for comparison with ultrasound imaging experiments.
Rights: Copyright © 1998 American Physical Society
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田中 之博

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