Observation of Surface Acoustic Wave Propagation on a Quartz Ball with Concave Proximate Electrodes
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概要
- 論文の詳細を見る
We evaluated the characteristics of roundtrip propagation on a ball surface acoustic wave (SAW) device by controlling the approach of electrodes to the quartz ball. In order to investigate the relationship between the interdigital transducer (IDT) position and the exponential attenuation in the roundtrips of SAW, we brought a concave glass plate with an IDT towards the equatorial belt ($Z$-axis cylinder) of the quartz ball, and transmitted and received a SAW. In this study, the precision of the apparatus was improved, and as a result, it was found that roundtrip of SAW attenuates exponentially when the IDT is at a certain position. The specific positions were not always at the $Z$-axis cylinder but distributed around it with the meander belt with a period of 120°. By fabricating an IDT at such positions, it is expected that the performance and reproducibility of ball SAW sensors will be enhanced.
- 2008-05-25
著者
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Ohgi Tsuneo
Toppan Printing Co. Ltd.
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Nakaso Noritaka
Toppan Printing Co.
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Yamanaka Kazushi
Department Of Applied Physics Faculty Of Engineering University Of Tokyo:(present Address)mechanical
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Yanagisawa Takayuki
Toppan Printing Co., Ltd., Sugito, Saitama 345-8508, Japan
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Nakaso Noritaka
Toppan Printing Co., Ltd., Sugito, Saitama 345-8508, Japan
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Ohgi Tsuneo
Toppan Printing Co., Ltd., Sugito, Saitama 345-8508, Japan
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Ote Kazunori
Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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