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ZHENG Min, WEN Yumei, LI Ping, SUN Xuemei, XIAO Tingfu. Velocity variation of surface acoustic wave under force applied on the propagation surface[J]. ACTA ACUSTICA, 2008, 33(5): 437-442. DOI: 10.15949/j.cnki.0371-0025.2008.05.005
Citation: ZHENG Min, WEN Yumei, LI Ping, SUN Xuemei, XIAO Tingfu. Velocity variation of surface acoustic wave under force applied on the propagation surface[J]. ACTA ACUSTICA, 2008, 33(5): 437-442. DOI: 10.15949/j.cnki.0371-0025.2008.05.005

Velocity variation of surface acoustic wave under force applied on the propagation surface

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  • PACS: 
    • 43.35  (Ultrasonics, quantum acoustics, and physical effects of sound)
  • Received Date: October 30, 2007
  • Revised Date: April 02, 2008
  • Available Online: July 08, 2022
  • The velocity variation under a force directly loaded on the propagation surface of Surface Acoustic Wave (SAW) is analyzed. Effective material coefficients are utilized to involve the force loading and the general Green's Function is used to calculate the velocity of SAW. In experiments, force is applied on the surfaces of SAW resonators, and the experimental results are consistent with the numerical calculations. The results also show that the velocity variation of SAW is proportional to the load, and the resonance frequency shift of SAW resonator has a high sensitivity to mass load applied on the propagation surface(about 1900 Hz/g).
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