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High-frequency acoustic interaction of resonant systems using SAWs

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2 Author(s)
H. R. Garner ; General Atomics, San Diego, CA, USA ; T. Ohkawa

A planar array of microspheres was deposited on the surface of a surface-acoustic-wave (SAW) device. Arrays of polymer microspheres with mode number m=1 and 2 were observed to resonate with the acoustic wave, thus absorbing or scattering the wave such that transmission is reduced at the resonant frequency. Comparing the quality factor determined from the transmission spectra (Q approximately 15) and that determined from rapid pulse shut-off experiments (Q<<15) also indicated that the surface wave was either scattered by the array or absorbed via enhanced coupling to the atmosphere.<>

Published in:

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:40 ,  Issue: 1 )