U.S.-Germany Cooperative Research in Ceramics and Holography

该奖项支持亚利桑那州立大学（ASU）固体科学中心主任R. W. Carpenter博士，将他的研究小组在材料科学两个相关领域的工作与两个杰出的德国研究小组联系起来，即德国航空航天研究机构（DFVLR）的陶瓷研究实验室，由Wolfgang Braue博士领导，以及由图宾根大学的汉内斯·利希特博士领导的一个小组。利用DFVLR， ASU小组将研究结构陶瓷的结构、性能和加工之间的关系。与Lichte博士一起，他们将对材料科学中重要的样品中晶格缺陷的传统和全息高分辨率电子成像进行直接实验研究。在这两个项目中，共同的标本将用于每个项目的特定部分。众所周知，材料科学的核心是，所有材料对象的微观结构，如结构陶瓷或固态电子材料，都非常依赖于合成过程。亚利桑那州立大学在分析微观结构的几何形状方面具有新颖而不寻常的能力。DFVLR在处理、分析和测量从原材料到成品结构材料的陶瓷性能方面具有不同寻常的能力。这两个合作实验室的独特能力阵列可以对这类重要结构材料的微观结构特性及其与加工的关系进行详细和可控的研究。与蒂宾根大学的团队合作，重点关注在晶体晶格缺陷成像中获得更好的空间分辨率的需求，以推进材料科学研究的前沿。晶格缺陷或晶体周期性的中断，如晶界和界面，对材料的性能有重大影响。这些都不容易从理论上预测，而且迫切需要实验数据。图宾根大学拥有电子全息高分辨率成像能力。然而，通过这种新实验方法获得的晶格缺陷数据明显增强，必须与现有可靠方法获得的最密切相关的数据进行解释和比较。亚利桑那州立大学拥有最先进的常规高分辨率电子显微镜，可用于此目的。

This award supports Dr. R. W. Carpenter, Director of the Center for Solid State Science, Arizona State University (ASU), to link the work of his research group in two related lines of materials science with two outstanding German research groups, the ceramics research laboratory of the German Aerospace Research Establishment (DFVLR), headed by Dr. Wolfgang Braue, and a group headed by Dr. Hannes Lichte of the University of Tubingen. With DFVLR, the ASU group will investigate the relationships among structures and properties and processing in structural ceramics. With Dr. Lichte, they will pursue a direct experimental investigation of conventional and holographic high resolution electron imaging of crystal lattice defects in specimens important for materials science. In both projects common specimens will be used for particular parts of each project. It is well known and central to materials science that the microstructure of all material objects such as structural ceramics or solid state electronic materials is quite dependent on the synthesis process. Arizona State University has novel and uncommon capabilities for analyzing the geometry of microstructures. DFVLR has unusual capabilities for processing and analyzing and measuring the properties of ceramics from starting materials through finished structural materials. This unique array of capabilities at the two cooperating laboratories enables detailed and controlled study of microstructural properties and their relationship to processing in this important class of structural materials. Collaboration with the group at the University of Tubingen focuses on the need to obtain better spatial resolution in the imaging of defects in crystal lattices to advance the frontiers of materials science research. Lattice defects, or interruptions in the periodicity of crystals, such as grain boundaries and interfaces, have major influences on the properties of materials. These are not easily predicted from theory, and experimental data are badly needed. The University of Tubingen possesses capability for electron holographic high resolution imaging. However, the apparently greatly enhanced data on lattice defects obtained by this new experimental method must be interpreted and compared to the most closely related data obtainable by existing and reliable methods. ASU possesses state of the art conventional high resolution electron microscopes that can be used for this purpose.