Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields
Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields
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DOI：
10.1063/1.4798584
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发表时间：
2013-03-25
影响因子：
4
通讯作者：
Wilcox, Paul D.
中科院分区：
文献类型：
--
作者：
Courtney, Charles R. P.;Drinkwater, Bruce W.;Wilcox, Paul D.
我们表明贝塞尔函数声压场可用于捕获微粒并对其位置进行可控调节。一个由16个元件组成的圆形超声阵列在腔室内产生并操控一个声场，从而捕获微粒及微粒聚集体。施加在阵列元件上的正弦信号的相位变化会导致贝塞尔函数压力场以及微粒的移动。这展示了类似于全息光镊的超声操控。该装置的操控极限是由操控腔室内存在的有害共振所导致的。（C）2013美国物理学会。[http://dx.doi.org/10.1063/1.4798584]
We show that Bessel-function acoustic pressure fields can be used to trap and controllably position microparticles. A circular, 16-element ultrasound array generates and manipulates an acoustic field within a chamber, trapping microparticles and agglomerates. Changes in the phase of the sinusoidal signals applied to the array elements result in the movement of the Bessel-function pressure field and hence the microparticles. This demonstrates ultrasonic manipulation analogous to holographic optical tweezers. The manipulation limits of the device are explained by the existence of unwanted resonances within the manipulation chamber. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4798584]