Variation of Bending-Vibrator Characteristics when an Object is Brought into Close Proximity with the Vibrator End
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概要
- 論文の詳細を見る
Evanescent acoustic fields which decay exponentially from the plate surface can be created in the vicinity of a piezoelectric bending vibrator. When an object is brought into this evanescent field, the electric admittance of the vibrator undergoes some change depending on the vibrator-to-object distance $d$. The authors' group has found so far that as an object comes into close proximity with the plate end, an unexpected phenomenon occurs such that the $Q$-factor which once decreased starts to increase in the range where $d$ becomes small. In this study, this unique phenomenon is examined in detail by experiments and some new findings are shown on the variation of bending-vibrator characteristics. Also, theoretical explanations are given to conjecture the mechanism of this phenomenon by using a simple model.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-05-15
著者
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Yamazaki Daisuke
Department Of Applied Chemistry Faculty Of Engineering Gunma University
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Nakamura Kiyoshi
Department Of Chemistry Faculty Of Science Shinshu University
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Yamada Ken
Department Of Applied Chemistry Faculty Of Science And Technology Keio University
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Yamazaki Daisuke
Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, 05 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8579, Japan
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Nakamura Kiyoshi
Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, 05 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8579, Japan
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NAKAMURA Kiyoshi
Department of Biology, Faculty of Science, Okayama University
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