Parametric amplification of the dynamic radiation force of acoustic waves in fluids

被引：23

作者：

Silva, GT ^{[1
]}

Chen, S

Viana, LP

机构：

[1] Univ Fed Alagoas, Inst Computacao, BR-57072970 Maceio, AL, Brazil

[2] Mayo Clin & Mayo Fdn, Coll Med, Dept Physiol & Biomed Engn, Rochester, MN 55905 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.96.234301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on parametric amplification in dynamic radiation force produced by a bichromatic acoustic beam in a fluid. To explain this effect we develop a theory taking into account the nonlinearity of the fluid. The theory is validated through an experiment to measure the dynamic radiation force on an acrylic sphere. Results exhibit an amplification of 66 dB in water and 80 dB in alcohol as the difference of the frequencies is increased from 10 Hz to 240 kHz.

引用

页数：4

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