ボールSAW素子の原理と応用

書誌事項

タイトル別名
  • Principle and Application of Ball SAW Devices
  • ボール SAW ソシ ノ ゲンリ ト オウヨウ

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抄録

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.

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