Acquisition of a Field-Emission Energy-Filtering Transmission Electron Microscope for Materials Research

购买用于材料研究的场发射能量过滤透射电子显微镜

• 批准号: 9871119
• 负责人: J. Murray Gibson
• 金额: $ 100万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9871119&HistoricalAwards=false
• 关键词: Acquisition; Field; Emission; Energy; Filtering

9871119-GibsonA state-of-the-art field-emission gun transmission electron micro-scope (FEG/TEM) which is capable of energy filtering the diffracted electrons and which will be used for an integrated research program at the University of Illinois will be acquired using funds from the Major Research Instrumentation program. This instrument will be lo-cated in the Center for Microanalysis of Materials (CMM) located in the Frederick Seitz Materials Research Laboratory (FSMRL); an interdisciplinary research department focused on the fields of Materials Science and Engineering, Condensed Matter Physics, Materials Chemistry, and Biomaterials. The FSMRL has a rich tradition of enabling cross-disciplinary research involving about 60 faculty research groups distributed among seven academic departments. Access to an FEG/TEM is critical to the success of several very specific projects at the University of Illinois. Projects on the synthesis of catalytic materials, epitaxial nanostructures in semiconductors, the chemistry and structure of interfaces, the structure of ball-milled amorphous solids, and corrosion will take advantage of the unique capabilities of the proposed instrument for Z-contrast imaging, nanoscale chemical analysis, energy filtering, and electron holography. The electron holographic capabilities of the proposed FEG/TEM and its ability to image the electrostatic fields associated with ferroelectric domains will enable studies of the microstructure, domain structure, and domain switching of ferroelectric thin films. The energy filtering and STEM capabilities of the proposed instrument are critical to a project on imaging of biological structures such as chromatin fibers. In addition to the research projects, the instrument will be used for many other graduate student research projects in the context of its operation by the CMM. This mode of operation will have a major impact on the graduate research and educa-tional programs as indicated by the fact that more than 157 graduate students have been educated in the use of TEM methods in the past five years and more than 469 have used the CMM TEMs during that same period. %%%The field-emission gun transmission electron micro-scope that will be acquired using funds from the National Science Foundation's Major Research Instrumentation program will be integrated into the CMM and will see extensive annual use by an estimated 80 users of the TEM facilities of the CMM. This facility supports projects that involve many faculty and graduate students at the University of Illinois. ***

9871119-GibsonA国家的最先进的场发射枪透射电子显微镜（FEG/TEM），这是能够能量过滤的衍射电子，并将用于在伊利诺伊大学的综合研究计划将被收购使用的资金从主要研究仪器计划。 该仪器将位于Frederick Seitz材料研究实验室（FSMRL）的材料微量分析中心（CMM）;该跨学科研究部门专注于材料科学与工程，凝聚态物理，材料化学和生物材料领域。 FSMRL具有丰富的跨学科研究传统，涉及分布在七个学术部门的约60个教师研究小组。 获得FEG/TEM对于伊利诺伊大学几个非常具体的项目的成功至关重要。 催化材料的合成，半导体中的外延纳米结构，界面的化学和结构，球磨非晶固体的结构和腐蚀的项目将利用所提议的仪器的独特功能进行Z对比成像，纳米级化学分析，能量过滤和电子全息。 建议FEG/TEM的电子全息能力和它的能力，以图像与铁电畴的静电场将使铁电薄膜的微观结构，畴结构和畴开关的研究。 所提出的仪器的能量过滤和STEM能力对于染色质纤维等生物结构的成像项目至关重要。 除了研究项目外，该仪器还将用于CMM操作范围内的许多其他研究生研究项目。 这种操作模式将对研究生研究和教育项目产生重大影响，过去五年中已有超过157名研究生接受了TEM方法使用方面的教育，超过469名研究生使用了TEM方法。同一时期。 场发射枪透射电子显微镜将使用国家科学基金会的主要研究仪器计划的资金获得，将被集成到CMM中，并将看到CMM的TEM设施的估计80个用户的广泛使用。 该设施支持涉及伊利诺伊大学许多教师和研究生的项目。 ***