MICROTRANSPORT INDUCED BY ULTRASONIC LAMB WAVES

被引：129

作者：

MORONEY, RM ^{[1
]}

WHITE, RM ^{[1
]}

HOWE, RT ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,ELECTR RES LAB,BERKELEY,CA 94720

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 07期

关键词：

D O I：

10.1063/1.105339

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have observed pumping of water induced by 4.7 MHz ultrasonic Lamb waves traveling in a 4-mu-m-thick composite membrane of silicon nitride and piezoelectric zinc oxide. The observed pumping speed is proportional to the square of the wave amplitude; the speed was 100-mu-m/s for a rf drive voltage of 8 V and a 6.5 nm wave amplitude. A nonlinear model based on acoustic streaming theory predicts velocities in good agreement with experiment.

引用

页码：774 / 776

页数：3

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