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

9871119 . gibsona最先进的场发射枪透射电子显微镜（FEG/TEM）能够对衍射电子进行能量过滤，将用于伊利诺伊大学的一个综合研究项目，该项目将使用主要研究仪器项目的资金。该仪器将位于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）；一个跨学科的研究部门，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拥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、半导体的外延纳米结构、界面的化学和结构、球磨非晶固体的结构以及腐蚀等项目将利用该仪器在z对比成像、纳米级化学分析、能量过滤和电子全息成像方面的独特能力。所提出的FEG/TEM的电子全息能力及其成像与铁电畴相关的静电场的能力将使铁电薄膜的微观结构，畴结构和畴开关的研究成为可能。该仪器的能量过滤和STEM功能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，该仪器还将在CMM操作的背景下用于许多其他研究生研究项目。这一运作模式将对研究生的研究和教育计划产生重大影响，这一事实表明，在过去的五年中，超过157名研究生接受了使用TEM方法的教育，超过469名研究生在同一时期使用了CMM TEM。使用美国国家科学基金会主要研究仪器项目的资金获得的场发射枪透射电子显微镜将被集成到CMM中，并且每年将被CMM的TEM设备的大约80个用户广泛使用。该设施支持涉及伊利诺伊大学许多教师和研究生的项目。＊＊＊

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. ***