晶体生长中的流体力学问题

流体力学与晶体生长有密切的关系.在晶体生长中,流体中的输运过程和流动的不稳定性对生成晶体的结构和质量有重要影响.本文概述了晶体生长中与流体力学有关的若干问题.首先对晶体生长的一些基本方法作了简介,然后对晶体生长中的流动现象及其与晶体缺陷的关系进行了讨论,最后提出了几种控制流动以改进晶体生长技术的可能途径.

FLUID MECHANICS IN CRYSTAL GROWTH PROBLEMS

Fluid mechanics bears a close relation to the crystal growth. The transport processes and flow instabilities in the fluid phase during the growth of crystals have a profound influence on the structure and quality of the crystals. In this paper some aspects of hydrodynamics related to the crystal growth are reviewed. The basic methods of the crystal growth are first briefly described. The various flow phenomena during the growth of crystals and their relevance to the crystal defects are then considered. Several possible means of flow control for improving the techniques of crystal growth are presented.