Independent trapping and manipulation of microparticles using dexterous acoustic tweezers
Independent trapping and manipulation of microparticles using dexterous acoustic tweezers
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DOI：
10.1063/1.4870489
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发表时间：
2014-04-14
影响因子：
4
通讯作者：
Drinkwater, Bruce W.
中科院分区：
文献类型：
--
作者：
Courtney, Charles R. P.;Demore, Christine E. M.;Drinkwater, Bruce W.
一个电子控制的声学镊子被用来证明两个声学操纵现象：叠加的贝塞尔函数，允许独立操纵的多个粒子和使用高阶贝塞尔函数捕获粒子在更大的区域比可能与一阶陷阱。声镊由一个圆形的64个元件的超声波阵列在2.35 MHz的工作，产生超声波压力场在毫米级的流体填充室。的操作能力进行了实验证明与45和90 μ m直径的聚苯乙烯球。这些能力使声镊的灵巧性实质上更接近于光镊。(C)2014 AIP出版有限责任公司。
An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap particles in larger regions than is possible with first-order traps. The acoustic tweezers consist of a circular 64-element ultrasonic array operating at 2.35 MHz which generates ultrasonic pressure fields in a millimeter-scale fluid-filled chamber. The manipulation capabilities were demonstrated experimentally with 45 and 90-mu m-diameter polystyrene spheres. These capabilities bring the dexterity of acoustic tweezers substantially closer to that of optical tweezers. (C) 2014 AIP Publishing LLC.