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Imaging acoustic waves in microscopic wedges

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/57646

Title: Imaging acoustic waves in microscopic wedges
Authors: Tomoda, Motonobu Browse this author →KAKEN DB
Matsueda, Shinnosuke Browse this author
Otsuka, Paul H. Browse this author
Matsuda, Osamu Browse this author
Veres, Istvan A. Browse this author
Gusev, Vitalyi E. Browse this author
Wright, Oliver B. Browse this author
Keywords: wedge
Lamb waves
acoustics
imaging
ultrafast
Issue Date: Oct-2014
Publisher: IOP Publishing
Journal Title: New Journal of Physics
Volume: 16
Issue: 10
Start Page: 103029
Publisher DOI: 10.1088/1367-2630/16/10/103029
Abstract: Using an ultrafast optical technique we image near-gigahertz flexural acoustic waves propagating in a thin gold wedge deposited on an ultrathin silicon nitride slab. Temporal Fourier transforms of the imaged data in two dimensions allow individual frequencies to be accessed. The wave fronts associated with antisymmetric Lamb waves bend towards the thin end of the wedge. This behaviour is mimicked with an analytical model based on sections of a linear wedge. We also conduct numerical simulations which show good agreement with the experimental results.
Rights: http://creativecommons.org/licenses/by/3.0/
Type: article
URI: http://hdl.handle.net/2115/57646
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: 友田 基信

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