Manipulating bubbles with secondary Bjerknes forces

被引：29

作者：

Lanoy, Maxime ^{[1
,2
]}

Derec, Caroline ^{[2
]}

Tourin, Arnaud ^{[1
]}

Leroy, Valentin ^{[2
]}

机构：

[1] PSL Res Univ, Inst Langevin, ESPCI ParisTech, CNRS UMR 7587, F-75005 Paris, France

[2] Univ Paris Diderot, Lab Matiere & Syst Complexes, CNRS,UMR 7057, F-75013 Paris, France

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 21期

关键词：

SOUND FIELD; STANDING-WAVE; GAS-BUBBLES; PARTICLES;

D O I：

10.1063/1.4936259

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Gas bubbles in a sound field are submitted to a radiative force, known as the secondary Bjerknes force. We propose an original experimental setup that allows us to investigate in detail this force between two bubbles, as a function of the sonication frequency, as well as the bubbles radii and distance. We report the observation of both attractive and, more interestingly, repulsive Bjerknes force, when the two bubbles are driven in antiphase. Our experiments show the importance of taking multiple scatterings into account, which leads to a strong acoustic coupling of the bubbles when their radii are similar. Our setup demonstrates the accuracy of secondary Bjerknes forces for attracting or repealing a bubble, and could lead to new acoustic tools for noncontact manipulation in microfluidic devices. (C) 2015 AIP Publishing LLC.

引用

页数：4

共 50 条

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