Space Environment Simulation for Material Processing by Acoustic Levitation

作     者：XIE Wen-Jun WEI Bing-Bo 解文军;魏炳波

作者机构：Department of Applied PhysicsNorthwestern Polytechnical UniversityXi'an 710072 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2001年第18卷第1期

页      面：68-70页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No.59871040 the National High Technology Development Program of China under Grant No.863-2-4-3-2 

主　　题：solidification vibrating rotation 

摘      要：Single-axis acoustic levitation of four polymer samples has been realized in air under the ground-based laboratory conditions for the purpose of space environment simulation of containerless *** levitation capabilities are investigated by numerical calculations based on a model of the boundary element method corresponding to our levitator and following Gor kov and Barmatz s *** calculated results,such as the resonant distance between the reflector and the vibrating source and the positions of levitated samples,agree well with experimental observation,and the effect of gravity on the time-averaged potential for levitation force is also *** an application,the containerless melting and solidification of a liquid crystal,4-Pentylphenyl-4 -methybenzoate,is successfully accomplished,in which undercooling up to 16 K is obtained and the rotation and oscillation of the sample during solidification may result in fragmentation of the usual radiating surface growth morphology.