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Nonlinear surface acoustic waves: silicon strength in phonon-focusing directions.

作者信息

Kozhushko Victor V, Hess Peter

机构信息

Institute of Physical Chemistry, University of Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany.

出版信息

Ultrasonics. 2008 Nov;48(6-7):488-91. doi: 10.1016/j.ultras.2008.05.006. Epub 2008 Jun 12.

DOI:10.1016/j.ultras.2008.05.006
PMID:18649909
Abstract

The anisotropy of the elastic properties of single-crystal silicon manifests itself in features of both the linear and nonlinear surface acoustic wave (SAW) propagation. Directions showing the phonon-focusing effect and strong nonlinearity were employed in contact-free and notch-free laser-based fracture experiments, yielding the intrinsic strength of silicon. The critical tensile stress values vary between 2.5 GPa and 7 GPa for the different crystallographic planes and directions of SAW propagation investigated.

摘要

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