CAREER: Control of Solidification Morphology and Microstructure Using Combined Electric and Magnetic Fields: Experiment and Modeling

在许多传统和先进的材料工艺中都会发生凝固现象。微观结构的形成决定了材料的质量及其电、磁、光学性能。本文将对Bridgman体系中的晶体生长进行迭代实验-理论-模型研究。本文将开发一种利用电场和磁场联合作用有效控制共晶凝固过程中材料形貌和微观组织的方法。一个关于晶体生长的虚拟实验室将由本科生直接参与开发。这项研究将试图促进对电场和磁场对凝固过程影响的基本认识。预计半导体工业将发现新的方法，通过控制工艺参数来实现形态控制和微观结构的细化和校准，以及物理性能的优化。虚拟实验室的可用性使培养学生使用先进设备成为可能，这对进一步的工程教育具有重要意义。

AbstractSolidification occurs in many traditional and advanced materials processes. The quality of the materials and their electrical, magnetic and optical properties are determined by microstructure formation. An iterative experiment-theory-modeling research will be conducted for crystal growth in Bridgman systems. A methodology will be developed that can effectively control the materials morphology and microstructure during eutectic solidification utilizing combined electric and magnetic fields. A virtual laboratory on crystal growth will be developed with direct involvement of undergraduate students.This research will attempt to advance the fundamental understanding of the influence of electric and magnetic fields on solidification processes. It is anticipated that new methodologies will be discovered for semiconductor industries to achieve morphological control and micro-structural refinement and alignment as well as the optimization of physical properties through control of the process parameters. The availability of the virtual laboratory makes it possible to train students in utilizing advanced facilities, which is important in furthering education in engineering.