Directional acoustic microscopy for observation of elastic anisotropy
作者:
J. A. Hildebrand,
L. K. Lam,
期刊:
Applied Physics Letters
(AIP Available online 1983)
卷期:
Volume 42,
issue 5
页码: 413-415
ISSN:0003-6951
年代: 1983
DOI:10.1063/1.93959
出版商: AIP
数据来源: AIP
摘要:
A directional acoustic microscope is described that has enhanced contrast for elastically anisotropic materials. Directional detection of surface acoustic waves by the acoustic lens is demonstrated on (100) and (111) silicon crystals. The grains of a polycrystalline silicon sample have contrast which varies as a function of lens orientation. Symmetry of contrast variations and measurement of surface wave phase velocity may provide a new way to determine the orientation of microscopic grains.
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