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.

该行动资助加州大学欧文分校的 Jesse P. Angle 于 2013 年夏季在日本东京的东京大学晶体界面实验室开展工程研究项目。该项目的标题是“表征陶瓷变形的原位透射电子显微镜压痕”。主持科学家是几原雄一教授。该项目的重点是确定广泛使用的陶瓷材料莫来石的变形机制。即使其在航空航天和电子工业中得到应用，这种材料的许多基本机械性能仍然未知，通过了解滑移的基本变形机制，包括滑移方向和滑移系统，可以完整表征材料的机械性能。莫来石即可实现。为了观察研究莫来石滑移系统所需的位错形成，使用原位透射电子显微镜（TEM）压电致动器控制的纳米压头在单晶莫来石样品的表面上形成压痕以创建塑性变形区域并产生局部错位。通过分析双束条件下（即一组平面满足布拉格定律）下衍射电子的平面的倒晶格矢量（g），可以表征位错的伯格斯矢量（b）。将该滑移方向与晶体的取向相匹配，可以确定滑移面，从而确定滑移系统。了解常用材料的局限性，可以使关键工程化合物的设计、制造和实施具有更高的成功率和可靠性。该项目有可能对材料进步推动行业发展的航空航天和电子行业产生直接影响。 EAPSI 奖学金的更广泛影响包括为研究员提供美国以外的第一手研究经验；各自地点的科学、科学政策和科学基础设施的介绍；以及对社会、文化和语言的定位。这些活动符合 NSF 的目标，即在科学家、工程师和教育工作者职业生涯的早期进行国际合作教育，从而确保美国科学劳动力具有全球意识。 此外，该项目的结果将在会议和演讲中传播，并将以期刊出版物的形式增强科学理解。这位 EAPSI 研究员积极参与以学术和研究为重点的外展团体，计划通过向研究生和本科生展示国际合作如何有利于他们作为科学家和工程师的职业生涯，分享他在 NSF EASPI 项目中的经验。