High-frequency acoustic interaction of resonant systems using SAWs

Author

Garner, H.R. ; Ohkawa, T.

Author_Institution

General Atomics, San Diego, CA, USA

Volume

40

Issue

1

fYear

1993

Firstpage

69

Lastpage

72

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;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.185001

Filename

185001