NSF East Asia and Pacific Summer Institute (EAPSI) for FY 2013 in Japan

2013 财年 NSF 东亚及太平洋夏季学院 (EAPSI) 在日本举行

• 批准号: 1311024
• 负责人: Jesse Angle
• 金额: $ 0.51万
• 依托单位: Angle Jesse P
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1311024&HistoricalAwards=false
• 关键词: NSF; East; Asia; Pacific; Summer

This action funds Jesse P. Angle of The University of California at Irvine to conduct a research project in Engineering during the summer of 2013 in the Crystal Interface Laboratory at The University of Tokyo in Tokyo, Japan. The project title is "In-situ Transmission Electron Microscopy Indentation to Characterize Deformation in Ceramics." The host scientist is Professor Yuichi Ikuhara. This project focuses on determining the deformation mechanism in a widely used ceramic material, mullite. Even with its uses in the aerospace and electronics industries, many of the essential mechanical properties of this material still remain unknown and by understanding the fundamental deformation mechanism of slip, both the slip direction and slip-system, a complete characterization of the mechanical properties of mullite can be achieved. In order to observe the dislocation formation necessary to study the slip system of mullite, an in-situ Transmission Electron Microscopy (TEM) piezo actuator controlled nano indenter is used to form indentations on the surface of a single crystal mullite sample to create plastic deformation region and create localized dislocations. By analyzing the reciprocal lattice vector (g) of the planes that diffract electrons under a two-beam condition (meaning one set of planes satisfies Bragg's Law), the Burgers vector (b) of the dislocation can be characterized. Matching this slip direction to the orientation of the crystal, the slip plane and thus the slip system can be determined. Understanding the limits of commonly used materials, allows the design, manufacture and implementation of critical engineering compounds with a much higher degree of success and reliability. This project has potential to see direct impact in the aerospace and electronics sectors where material advances drive the industry. Broader impacts of an EAPSI fellowship include providing the Fellow a first-hand research experience outside the U.S.; an introduction to the science, science policy, and scientific infrastructure of the respective location; and an orientation to the society, culture and language. These activities meet the NSF goal to educate for international collaborations early in the career of its scientists, engineers, and educators, thus ensuring a globally aware U.S. scientific workforce. Furthermore, results of this project will be disseminated at conferences and in presentations, and will enhance scientific understanding in the form of journal publications. Being active in both academic and research focused outreach groups, this EAPSI Fellow plans to share his experiences in the NSF EASPI program by showing students, graduate and undergraduate, how international collaboration can be beneficial to their careers as scientists and engineers.

该行动为加利福尼亚大学尔湾分校的杰西·P·安格（Jesse P.该项目标题是“原位传输电子显微镜缩进，以表征陶瓷变形”。主持人科学家是Yuichi Ikuhara教授。该项目着重于确定广泛使用的陶瓷材料Mullite中的变形机制。即使在航空航天和电子产业中使用了它，该材料的许多基本机械性能仍然未知，并且通过了解滑移的基本变形机制，即滑动方向和滑移系统，可以实现Mullite机械性能的完整表征。为了观察研究mullite的滑动系统所需的位错形成，使用原位透射电子显微镜（TEM）压电执行器控制的纳米压痕用于在单个晶体mullite样品的表面形成凹痕，以创建塑性变形区域并产生局部错位。通过分析在两光束条件下衍射电子的平面的相互晶格矢量（g）（这意味着一组平面满足布拉格定律），可以表征位错的汉堡向量（b）。将这个滑动方向与晶体的方向相匹配，可以确定滑动平面，从而可以确定滑动系统。了解常用材料的极限，可以设计，制造和实施关键的工程化合物，并具有更高的成功和可靠性。该项目有可能看到在航空航天和电子领域的直接影响，在这些领域中，物质发展推动了行业。 EAPSI奖学金的更广泛的影响包括为这位美国境外的第一手研究经验提供；各自位置的科学，科学政策和科学基础设施的简介；以及社会，文化和语言的方向。这些活动符合NSF的目标，以在其科学家，工程师和教育工作者的职业生涯的早期对国际合作进行教育，从而确保全球意识的美国科学劳动力。 此外，该项目的结果将在会议和演讲中传播，并以期刊出版物的形式增强科学理解。这项EAPSI同伴计划都积极参与学术和研究的范围外展小组，通过向学生，研究生和本科生展示他在NSF EASPI计划中的经验，国际合作如何对他们作为科学家和工程师的职业有利。