Acquisition of an Atomic-Resolution Transmission Electron Miscroscope

材料科学的主要重点是理解和 控制处理-结构-属性关系， 材料. 为了实现这一点，有必要 定量地表征所述化合物的组成、晶体结构 界面结构、缺陷结构和形貌 在最高分辨率水平上的组件相位。 在这 根据建议，要求提供资金用于购买JEOL 4000 EX 原子分辨率透射电子显微镜和Gatan 622型视频系统和录像机。 Jeol 4000 EX显微镜 具有约0.19 nm的点对点分辨率， 缺陷和界面的原子结构的直接成像 在大多数材料中，而Gatan视频系统将允许 快速校正显微镜像差和记录 动态事件 梅杰-梅隆大学目前拥有多个 学科综合材料研究计划，如 一所大学的高温复合材料研究计划， 国际商业机器中心的薄膜科学， 和磁性材料的NSF材料研究组。 在 所有这些，以及许多个人调查员， 程序，内部缺陷特征化，阶段 转变和界面结构及组成. 原子水平对于理解材料是必不可少的 行为 拥有原子分辨率的显微镜 大大加强我们建立基本 工艺-结构-性能的相互关系 电子光学设施在麦基梅隆大学以及 在匹兹堡地区的其他材料设施， 它有一个高分辨率的显微镜 卡内基梅隆 大学拥有足够专业的教职员工 在传统的和原子分辨率显微镜技术中， 确保原子分辨率显微镜用于 最高质量的材料研究，并保持在 最佳性能水平。 卡内基-梅隆大学 承诺提供大量对等资金， 仪器和资源，以维护。

The principal emphasis in materials science is to understand and control the processing-structure-properties relationships in materials. In order to achieve this, it is necessary to quantitatively characterize the composition, crystal structure, interfacial structure, defect structure and morphology of the component phases at the highest levels of resolution. In this proposal, funds are requested for the purchase of a JEOL 4000EX atomic-resolution transmission electron microscope and a Gatan Model 622 video system and recorder. The Jeol 4000EX microscope has a point-to-point resolution of - 0.19 nm and will permit direct imaging of the atomic structures of defects and interfaces in most materials, whereas the Gatan video system will allow rapid correction of microscope aberrations and recording of dynamic events. Carnegie-Mellon University currently has a number of multi- disciplinary comprehensive materials research programs, such as a University Research Initiative in high-temperature composites, an International Business Machines Center for thin-film sciences, and a NSF Materials Research Group in magnetic materials. In all of these, as well as in many individual investigator programs, characterization of internal defects, phase transformations and interfacial structures and compositions at the atomic level is essential for understanding material behavior. Having an atomic-resolution microscope will considerably strengthen our ability to establish fundamental interrelations among the processing-structure-properties in electron optics facility at Carnegie-Mellon University as well as at other materials facilities in the Pittsburgh area, none of which has a high-resolution microscope. Carnegie-Mellon University has both faculty and staff with sufficient expertise in conventional and atomic-resolution microscopy techniques to ensure that the atomic-resolution microscope is utilized for the highest quality materials research, and that it is maintained at an optimum level of performance. Carnegie-Mellon University pledges to provide significant matching funds for purchase of the instrument and resources for its maintenance.