Diffraction-free propagation of collimated saw around a quartz ball.

Noritaka Nakaso; Yusuke Tsukahara; Satoru Ishikawa; Kazushi Yamanaka

Diffraction-free propagation of collimated saw around a quartz ball.

Noritaka Nakaso, Yusuke Tsukahara, Satoru Ishikawa, Kazushi Yamanaka

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Conference article › peer-review

20 Citations (Scopus)

Abstract

A Ball SAW (Surface Acoustic Wave) device was fabricated on a single crystal quartz ball of 10 mm diameter. There were four specific routes on the surface of the ball along which the SAW was excited effectively showing round trips with low attenuation factors. One route was called the "Z-axis cylinder", and the other three routes were tri-symmetric meridians to the Z-axis of single crystal quartz ball. Their averaged velocities on "Z-axis cylinder" and other routes were 3.21*10³ m/s and 3.57 - 3.61*10³ m/s, respectively. On the "Z-axis cylinder", we could detect a signal in the 300th turn, and observed changes of delay time of the signals due to the temperature variation.

Original language	English
Pages (from-to)	47-52
Number of pages	6
Journal	Proceedings of the IEEE Ultrasonics Symposium
Volume	1
Publication status	Published - 2002 Dec 1
Event	2002 IEEE Ultrasonics Symposium - Munich, Germany Duration: 2002 Oct 8 → 2002 Oct 11

ASJC Scopus subject areas

Acoustics and Ultrasonics

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title = "Diffraction-free propagation of collimated saw around a quartz ball.",

abstract = "A Ball SAW (Surface Acoustic Wave) device was fabricated on a single crystal quartz ball of 10 mm diameter. There were four specific routes on the surface of the ball along which the SAW was excited effectively showing round trips with low attenuation factors. One route was called the {"}Z-axis cylinder{"}, and the other three routes were tri-symmetric meridians to the Z-axis of single crystal quartz ball. Their averaged velocities on {"}Z-axis cylinder{"} and other routes were 3.21*103 m/s and 3.57 - 3.61*103 m/s, respectively. On the {"}Z-axis cylinder{"}, we could detect a signal in the 300th turn, and observed changes of delay time of the signals due to the temperature variation.",

author = "Noritaka Nakaso and Yusuke Tsukahara and Satoru Ishikawa and Kazushi Yamanaka",

year = "2002",

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language = "English",

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journal = "Proceedings - IEEE Ultrasonics Symposium",

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T1 - Diffraction-free propagation of collimated saw around a quartz ball.

AU - Nakaso, Noritaka

AU - Tsukahara, Yusuke

AU - Ishikawa, Satoru

AU - Yamanaka, Kazushi

PY - 2002/12/1

Y1 - 2002/12/1

N2 - A Ball SAW (Surface Acoustic Wave) device was fabricated on a single crystal quartz ball of 10 mm diameter. There were four specific routes on the surface of the ball along which the SAW was excited effectively showing round trips with low attenuation factors. One route was called the "Z-axis cylinder", and the other three routes were tri-symmetric meridians to the Z-axis of single crystal quartz ball. Their averaged velocities on "Z-axis cylinder" and other routes were 3.21*103 m/s and 3.57 - 3.61*103 m/s, respectively. On the "Z-axis cylinder", we could detect a signal in the 300th turn, and observed changes of delay time of the signals due to the temperature variation.

AB - A Ball SAW (Surface Acoustic Wave) device was fabricated on a single crystal quartz ball of 10 mm diameter. There were four specific routes on the surface of the ball along which the SAW was excited effectively showing round trips with low attenuation factors. One route was called the "Z-axis cylinder", and the other three routes were tri-symmetric meridians to the Z-axis of single crystal quartz ball. Their averaged velocities on "Z-axis cylinder" and other routes were 3.21*103 m/s and 3.57 - 3.61*103 m/s, respectively. On the "Z-axis cylinder", we could detect a signal in the 300th turn, and observed changes of delay time of the signals due to the temperature variation.

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