Acoustic levitation with self-adaptive flexible reflectors
Acoustic levitation with self-adaptive flexible reflectors
复制标题
具有自适应柔性反射器的声悬浮
DOI：
10.1063/1.3610652
复制
发表时间：
2011-07-01
影响因子：
1.6
通讯作者：
Wei, B.
中科院分区：
文献类型：
--
作者：
Hong, Z. Y.;Xie, W. J.;Wei, B.
本文提出并研究了两种柔性反射器，以提高单轴声悬浮器的稳定性，特别是在悬浮高密度和高温样品的情况下。一种是具有可变形反射面的反射器，另一种是具有弹性支撑的反射器，这两种反射器都能自适应地改变声辐射压力。高密度材料如铱（密度22.6 gcm（-3））在室温下通过由胶体制成的软反射器以及由弹簧支撑的刚性反射器稳定地悬浮。此外，利用弹性支撑反射镜，在激光束辅助下，成功地实现了二元In-Bi共晶合金（熔点345.8K）和三元Ag-Cu-Ge共晶合金（熔点812 K）的无容器熔化和凝固。(C)2011年美国物理学会。[doi：10.1063/1.3610652]
Two kinds of flexible reflectors are proposed and examined in this paper to improve the stability of single-axis acoustic levitator, especially in the case of levitating high-density and high-temperature samples. One kind is those with a deformable reflecting surface, and the other kind is those with an elastic support, both of which are self-adaptive to the change of acoustic radiation pressure. High-density materials such as iridium (density 22.6 gcm(-3)) are stably levitated at room temperature with a soft reflector made of colloid as well as a rigid reflector supported by a spring. In addition, the containerless melting and solidification of binary In-Bi eutectic alloy (melting point 345.8 K) and ternary Ag-Cu-Ge eutectic alloy (melting point 812 K) are successfully achieved by applying the elastically supported reflector with the assistance of a laser beam. (C) 2011 American Institute of Physics. [doi:10.1063/1.3610652]