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CRYSTAL GROWTH PROCESSES UNDER EXTERNAL FIELDS

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SEMINARThe Key Lab of Inorganic Functional Materials and DevicesShanghai Institute of Ceramics, Chinese Academy of Sciences 

 

 

  中 国 科 学 院 上 海 硅 酸 盐 研 究 所 无 机 功 能 材 料 与 器 件 重 点 实 验 室 

  CRYSTAL GROWTH PROCESSES UNDER EXTERNAL FIELDS 

  Thierry Duffar 教授 

  法国Grenoble Polytechnic Institute大学 

  时间: 2015年11月10日(星期二)上午10:00 

  地点: 嘉定10号楼二楼会议室 

  联系人:罗豪甦 研究员 

  Thierry Duffar 教授在法国担任原子能署晶体生长研究组首席科学家、法国晶体生长学会主席、法国格勒诺布尔材料科学与技术研究所所长。在SIMAP-EPM国家重点实验室从事太阳能光伏硅材料晶体生长研究,是晶体缺陷、热场流场、计算机模拟与仿真多个研究领域的权威。在包括INP-Grenoble,Univ. J. Fourier等十余所大学指导博士研究生。成功完成了9次太空搭载晶体生长实验。与几乎所有法国的晶体生长企业都有合作交流。至今已发表了130多篇SCI学术论文, 在国际会议上作了120余次学术报告,拥有12项国际专利,编写晶体生长教材8本。

  Abstract 

  The research activity in our group focuses on the study of crystal growth processes. The general philosophy is to study the effect of growth parameters (thermal field, convection, growth rate, set-up…) on the crystal quality (chemical homogeneity, structural defects, residual stresses…). This involves knowledge in heat transfer, hydrodynamics and thermo-solutal convection, segregation in crystals, numerical modelling, crystal growth process engineering, mechanical properties at high temperature, structural defects engineering, crystal-crucible interactions, and capillarity.

  After introduction of the main crystal growth processes, the various defects commonly encountered in crystals will be discussed in relation with the physical phenomena occurring during the process.

  Then the scientific results obtained during a series of crystal growth in space, under microgravity conditions, will be presented. They concern chemical segregation in the crystals and also the interaction with the crucible walls, impacting the crystallographic defects.

  Finally, an overview of the effect of magnetic fields on crystal growth will be given.

 
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