351 圧電式人工基底膜の振動解析(T06-5 マイクロ・ナノ熱流体システム(5) 光・波動・振動,大会テーマセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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In this paper, we report a piezoelectric artificial basilar membrane which works as an acoustic sensor with frequency selectivity. The device consists of piezoelectric membrane made of polyvinylidine-defluoride (PVDF) which is fixed on the substrate with trapezoidal channel. The piezoelectric membrane over the trapezoidal channel works like a diaphragm and is oscillated by applying acoustic pressure. The oscillation mode of the membrane is experimentally measured using Laser-Doppler-Vibrometer(LDV) and theoretically analyzed based on the thin-plate theory using Wentzel-Kramers-Brillouin (WKB) method. The comparison between the experimental and theoretical results shows the detailed mechanism underlying the frequency selectivity of the artificial basilar membrane.
社団法人日本機械学会の論文
2008-08-02