Topic
Acoustic interferometer
About: Acoustic interferometer is a research topic. Over the lifetime, 1493 publications have been published within this topic receiving 19355 citations.
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TL;DR: In this article, the acousto-electric effect was predicted on the basis of theoretical calculations and the time-average of the generated current was found to depend on the sound power but not on the frequency of the acoustic wave.
Abstract: A new effect, the acousto-electric effect, is predicted on the basis of theoretical calculations. This effect deals with the generation of an electric current by a traveling longitudinal acoustic wave. The time-average of the generated current is found to depend on the sound power but not on the frequency of the acoustic wave. Illustrative calculations on a metal (sodium) and a semiconductor ($n$-type germanium) indicate that the effect should be experimentally measurable. An interesting analogy with the thermoelectric effect is pointed out.
139 citations
TL;DR: The general properties of fundamental antisymmetric A/sub 0/, symmetric S/ sub 0/, and shear horizontal SH/sub0/ acoustic waves propagating in thin piezoelectric plates have been theoretically investigated on samples of lithium niobate and lithium tantalate.
Abstract: The general properties of fundamental antisymmetric A/sub 0/, symmetric S/sub 0/, and shear horizontal SH/sub 0/ acoustic waves propagating in thin piezoelectric plates have been theoretically investigated on samples of lithium niobate (LiNbO/sub 3/) and lithium tantalate (LiTaO/sub 3/). The results obtained will be useful for a proper development of various physical, chemical, and biological sensors and devices for signal processing based on plate acoustic waves.
138 citations
132 citations
05 Oct 2003
TL;DR: In this article, a device structure eliminating the spurious modes arising from lateral standing Lamb waves is presented, and the operating principle behind the device is described with the use of a simple model.
Abstract: In this paper a device structure eliminating the spurious modes arising from lateral standing Lamb waves is presented. The operating principle behind the device is described with the use of a simple model. Experimental results of ZnO and AlN based resonators in SMR configuration are given. Laser interferometer measurements are presented that confirm applicability of the idea.
128 citations
TL;DR: The establishment of the concept of ASEW provides a new route for the integration of subwavelength acoustic devices with a structured solid surface and mapping the total field confirms the theoretical calculations with ASEWs excited.
Abstract: We demonstrate both theoretically and experimentally the physical mechanism that underlies extraordinary acoustic transmission and collimation of sound through a one-dimensional decorated plate. A microscopic theory considers the total field as the sum of the scattered waves by every periodically aligned groove on the plate, which divides the total field into far-field radiative cylindrical waves and acoustic surface evanescent waves (ASEWs). Different from the well-known acoustic surface waves like Rayleigh waves and Lamb waves, ASEW is closely analogous to a surface plasmon polariton in the optical case. By mapping the total field, the experiments well confirm the theoretical calculations with ASEWs excited. The establishment of the concept of ASEW provides a new route for the integration of subwavelength acoustic devices with a structured solid surface.
125 citations