Noncontact acoustic manipulation in air
Noncontact acoustic manipulation in air
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DOI：
10.1143/jjap.46.4948
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发表时间：
2007-07-01
期刊：
影响因子：
--
通讯作者：
Iida, Yasuo
中科院分区：
文献类型：
--
作者：
Kozuka, Teruyuki;Yasui, Kyuichi;Iida, Yasuo
非接触操纵技术可用于微机械技术、生物技术和新材料加工。在本文中，我们描述了一种用于在空中运输小物体的先进操纵技术。驻波场是由螺栓连接的朗之万传感器产生的两束相互交叉的声束产生的。发泡聚苯乙烯颗粒被捕获在驻波场中的声压节点处。通过改变两个声束之间的相位差来移动被捕获粒子的位置。当被捕获的粒子被传输时，它会在垂直于粒子传输方向的方向上周期性地进行空间振荡。声场的数值计算表明，声场是由超声波在每个换能器表面的反射引起的。
A noncontact manipulation technique is useful for micromachine technology, biotechnology, and new materials processing. In this paper, we describe an advanced manipulation technique for transporting small objects in air. A standing wave field was generated by two sound beams crossing each other generated by bolted Langevin transducers. Expanded polystyrene particles were trapped at the nodes of the sound pressure in the standing wave field. The position of a trapped particle was shifted by changing the phase difference between the two sound beams. When the trapped particle is transported, it spatially oscillate periodically in a direction perpendicular to that of particle transportation. The numerical calculation of an acoustic field revealed that it is caused by the reflection of an ultrasonic wave at each transducer surface.