Title :
High-frequency acoustic interaction of resonant systems using SAWs
Author :
Garner, H.R. ; Ohkawa, T.
Author_Institution :
General Atomics, San Diego, CA, USA
Abstract :
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.<>
Keywords :
Q-factor; acoustic resonators; surface acoustic wave devices; HF interaction; SAWs; acoustic interaction; acoustic wave absorption; acoustic wave scattering; coupling to atmosphere; enhanced coupling; microspheres arrays; microspheres resonance; planar array of microspheres; polymer microspheres; quality factor; rapid pulse shut-off experiments; resonant systems; transmission spectra; Acoustic arrays; Acoustic devices; Acoustic scattering; Acoustic waves; Planar arrays; Polymers; Resonance; Sawing machines; Surface acoustic wave devices; Surface acoustic waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
