Presentation 2011-09-26
Electromechanical coupling coefficient of SH-SAW in c-axis parallel oriented ZnO film/non-crystalline substrate structure
Yuta NAKAHIGASHI, Takahiko YANAGITANI, Mami MATSUKAWA, Yoshiaki WATANABE,
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Abstract(in English) A shear horizontal type surface acoustic wave (SH-SAW) propagates at liquid/solid interface without energy leakage to the liquid. This device can detect changes in conductivity and viscosity of liquid. c-axis parallel oriented ZnO film can be one of the best candidates for the SH-SAW liquid sensor on various substrates. Theoretical investigation of K^2 value in IDT/ZnO (0°, 90°, ψ) film/silica glass substrate structure showed that maximum value of K^2=3.4 % was found ψ=55° with H/λ=0.21. In this study, we fabricated these structures and evaluated K^2 values. Finally, excitations of SH-SAW were performed in the liquid.
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Keyword(in English) c-axis parallel oriented ZnO film / SH-SAW / electromechanical coupling coefficient
Paper # US2011-50
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Conference Date 2011/9/19(1days)
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Language JPN
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Title (in English) Electromechanical coupling coefficient of SH-SAW in c-axis parallel oriented ZnO film/non-crystalline substrate structure
Sub Title (in English)
Keyword(1) c-axis parallel oriented ZnO film
Keyword(2) SH-SAW
Keyword(3) electromechanical coupling coefficient
1st Author's Name Yuta NAKAHIGASHI
1st Author's Affiliation Faculty of Engineering, Doshisha University()
2nd Author's Name Takahiko YANAGITANI
2nd Author's Affiliation Nagoya Institute of Technology
3rd Author's Name Mami MATSUKAWA
3rd Author's Affiliation Faculty of Engineering, Doshisha University
4th Author's Name Yoshiaki WATANABE
4th Author's Affiliation Faculty of Engineering, Doshisha University
Date 2011-09-26
Paper # US2011-50
Volume (vol) vol.111
Number (no) 215
Page pp.pp.-
#Pages 4
Date of Issue