Principle and application of ball SAW devices

Kazushi Yamanaka; Noritaka Nakaso; Takeshi Fukiura; Dong Youn Sim

doi:10.1541/ieejeiss.127.1177

Principle and application of ball SAW devices

Kazushi Yamanaka, Noritaka Nakaso, Takeshi Fukiura, Dong Youn Sim

Research output: Contribution to journal › Article › peer-review

Abstract

A thin beam of wave usually diverges due to diffraction, which is a limitation of any device using such waves. However, a surface acoustic wave (SAW) on a sphere with an appropriate aperture does not diverge but is collimated, realizing ultramultiple roundtrips along an equator of the sphere. This effect is caused by the balance between diffraction and focusing on a spherical surface, and it enables realization of high-performance ball SAW sensors.

Original language	English
Pages (from-to)	1177-1185+7
Journal	IEEJ Transactions on Electronics, Information and Systems
Volume	127
Issue number	8
DOIs	https://doi.org/10.1541/ieejeiss.127.1177
Publication status	Published - 2007
Externally published	Yes

Keywords

Multiple roundtrips
Naturally collimated beam
Sphere
Surface acoustic wave

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1541/ieejeiss.127.1177

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AU - Yamanaka, Kazushi

AU - Nakaso, Noritaka

AU - Fukiura, Takeshi

AU - Sim, Dong Youn

PY - 2007

Y1 - 2007

N2 - A thin beam of wave usually diverges due to diffraction, which is a limitation of any device using such waves. However, a surface acoustic wave (SAW) on a sphere with an appropriate aperture does not diverge but is collimated, realizing ultramultiple roundtrips along an equator of the sphere. This effect is caused by the balance between diffraction and focusing on a spherical surface, and it enables realization of high-performance ball SAW sensors.

AB - A thin beam of wave usually diverges due to diffraction, which is a limitation of any device using such waves. However, a surface acoustic wave (SAW) on a sphere with an appropriate aperture does not diverge but is collimated, realizing ultramultiple roundtrips along an equator of the sphere. This effect is caused by the balance between diffraction and focusing on a spherical surface, and it enables realization of high-performance ball SAW sensors.

KW - Multiple roundtrips

KW - Naturally collimated beam

KW - Sphere

KW - Surface acoustic wave

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SN - 0385-4221

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Principle and application of ball SAW devices

Abstract

Keywords

ASJC Scopus subject areas

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