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

9871119-Gibson将使用主要研究仪器计划的资金购买能够过滤衍射电子的最先进的场发射枪透射电子显微镜，并将用于伊利诺伊大学的综合研究计划。该仪器将放置在弗雷德里克·塞茨材料研究实验室(FSMRL)的材料微量分析中心(CMM)，该中心是一个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的跨学科研究部门。FSMRL拥有丰富的传统，能够进行跨学科研究，涉及分布在7个学术部门的约60个教职员工研究小组。能否获得FEG/TEM卡对于伊利诺伊大学几个非常具体的项目的成功至关重要。在催化材料的合成、半导体外延纳米结构、界面的化学和结构、球磨非晶态固体的结构和腐蚀方面的项目将利用拟议的仪器在Z-对比度成像、纳米级化学分析、能量过滤和电子全息方面的独特能力。所提出的FEG/TEM的电子全息能力，以及它对与铁电畴相关的静电场成像的能力，将使对铁电薄膜的微结构、磁畴结构和磁畴转换的研究成为可能。拟议仪器的能量过滤和STEM能力对于染色质纤维等生物结构成像项目至关重要。除了研究项目外，该仪器还将用于CMM运作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计划产生重大影响，这一事实表明，在过去五年中，有157多名研究生接受了使用瞬变电磁方法的教育，在同一时期，有469多人使用了CMM TEM。将使用国家科学基金会重大研究仪器计划的资金获得的场发射枪传输电子显微镜将被整合到坐标测量机中，估计每年将有80名用户广泛使用坐标测量机的瞬变电磁设备。该设施支持涉及伊利诺伊大学许多教职员工和研究生的项目。***

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. ***