Acoustic method for levitation of small living animals
Acoustic method for levitation of small living animals
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DOI：
10.1063/1.2396893
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发表时间：
2006-11-20
影响因子：
4
通讯作者：
Wei, B.
中科院分区：
文献类型：
--
作者：
Xie, W. J.;Cao, C. D.;Wei, B.
利用单轴声悬浮器实现了蚂蚁、瓢虫、幼鱼等小型活体动物的超声悬浮。声悬浮对蚂蚁和瓢虫的生命力影响不明显，但对幼鱼的生命力影响很小。数值分析表明，由于声散射作用，作用在瓢虫表面的声压几乎达到入射声压幅值p（0）。据估计，99.98%的声能被反射离开瓢虫。声辐射压力p（a）仅为p（0）的1%-3%，对中心区域起压缩作用，对周边区域起抽吸作用。(c)2006年，美国物理学会。
Ultrasonic levitation of some small living animals such as ant, ladybug, and young fish has been achieved with a single-axis acoustic levitator. The vitality of ant and ladybug is not evidently influenced during the acoustic levitation, whereas that of the young fish is reduced because of the inadequacy of water supply. Numerical analysis shows that the sound pressures on the ladybug's surface almost reach the incident pressure amplitude p(0) due to sound scattering. It is estimated that 99.98% of the acoustic energy is reflected away from the ladybug. The acoustic radiation pressure p(a) on the ladybug's surface is only 1%-3% of p(0), which plays a compression role on the central region and a suction role on the peripheral region. (c) 2006 American Institute of Physics.