Study on buoyancy convection phenomenon in the crystal growth process  

作　　者：DUAN Li KANG Qi 

机构地区：[1]National Microgravity Laboratory,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Science China(Technological Sciences)》2009年第8期2367-2372,共6页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10672171 and 10432060);Knowledge Innovatiou Program of CAS (Phase Ⅲ)

摘　　要：Real-time phase shift Mach-Zehnder interference technique, imaging technique, and computer image processing technique were combined to perform a real-time diagnosis of NaClO3 crystal, which de- scribed both the dissolution process and the crystallization process of the NaClO3 crystal in real-time condition. The dissolution fringes and the growth fringes in the process were obtained. Moreover, a distribution of concentration field in this process was obtained by inversion calculation. Finally, the buoyancy convection phenomenon caused by gravity in the crystal growth process was analyzed. The results showed that this convection phenomenon directly influences the growth rate of each crystal face in the crystal.Real-time phase shift Mach-Zehnder interference technique, imaging technique, and computer image processing technique were combined to perform a real-time diagnosis of NaClO3 crystal, which described both the dissolution process and the crystallization process of the NaClO3 crystal in real-time condition. The dissolution fringes and the growth fringes in the process were obtained. Moreover, a distribution of concentration field in this process was obtained by inversion calculation. Finally, the buoyancy convection phenomenon caused by gravity in the crystal growth process was analyzed. The results showed that this convection phenomenon directly influences the growth rate of each crystal face in the crystal.

关 键 词：CRYSTAL GROWTH INTERFEROMETRY BUOYANCY CONVECTION 

分 类 号：O782[理学—晶体学]