Three-dimensional noncontact manipulation by opposite ultrasonic phased arrays
Three-dimensional noncontact manipulation by opposite ultrasonic phased arrays
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DOI：
10.7567/jjap.53.07ke07
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发表时间：
2014-07-01
影响因子：
1.5
通讯作者：
Rekimoto, Jun
中科院分区：
文献类型：
--
作者：
Hoshi, Takayuki;Ochiai, Yoichi;Rekimoto, Jun
提出了一种空气中的三维声操纵方法。将两个超声换能器阵列相对布置，通过相控阵聚焦技术在任意位置产生局部驻波。小颗粒悬浮在驻波的节点中，并且也根据驻波的位置进行操纵。本文介绍了该方法的基本原理：声悬浮理论、超声相控阵技术、径向力和轴向力的估计。实验证实，直径为0.6 mm的颗粒被捕获在节点中。研究了局部驻波的长度、悬浮耐久性和工作空间的大小。还证明了当局域驻波穿过质量时，可以将质量的颗粒舀起。(C)2014日本应用物理学会
A three-dimensional acoustic manipulation in air is presented. Two arrays of ultrasonic transducers are arranged opposite each other, generating a localized standing wave at an arbitrary position through the phased-array focusing technique. Small particles are suspended in the nodes of the standing wave and also manipulated according to the position of the standing wave. This paper gives the following principles of the proposed method: the theory of acoustic levitation, the ultrasonic phased array, and the estimation of the radial and axial forces. It was experimentally confirmed that particles of 0.6 mm diameter are trapped in the nodes. The length of the localized standing wave, the suspension endurance, and the size of the work space were investigated. It was also demonstrated that a mass of particles can be scooped up when the localized standing wave moves through the mass. (C) 2014 The Japan Society of Applied Physics