Acquisition of an X-Ray Diffraction Facility for Materials Development and Characterization

9803098克拉克该奖项为在科罗拉多大学博尔德校区创建地区性X射线衍射设施提供支持。该设施将满足科罗拉多前沿靶场对高分辨率、高强度实验室X射线衍射的迫切需求。该设施将由物理系凝聚态物质实验室建立、运营和维护，并将提供给科罗拉多大学校园和科罗拉多前沿靶场的材料研究小组使用。该仪器将是多功能的，允许高分辨率和低分辨率的衍射，将容纳包括低温恒温器、烤箱和磁场在内的大型样品室，从而能够在广泛的样品温度范围内进行实验，并将包括一个区域探测器，用于静态和时间分辨衍射。X射线发生器是一个旋转的阳极系统，它提供两个等效的点源X射线束。一束光束将被引导到4周期衍射仪和闪烁探测器，以执行theta-Two或h-k-L扫描衍射。另一束将与面积探测器结合使用，用于单晶学、小角X射线散射和时间分辨实验。每个光路/样品支架/探测器组件将安装在自己的光学台上，并由自己的计算机独立控制，这种配置将使两个实验能够同时进行。此次收购得到了地区材料科学界的广泛支持，用户来自科罗拉多大学的几个系，包括物理、化学、化学工程、机械工程和地质学，以及来自工业和主要前沿研究机构的用户，包括NIST、国家可再生能源实验室、科罗拉多矿业学院、科罗拉多州立大学和怀俄明大学。私人投资促进机构和初始用户名册提出的正在进行的和新的研究项目代表了定义浓缩阶段研究的广泛领域。实验内容包括：液晶的结构分析、高T_c超导体、激光沉积金属氧化物薄膜、新型液晶材料的开发、离子选择膜的结构、原子层控制薄膜生长技术的发展、核酶-阳离子脂质复合体的表征、用于RNA基酶的细胞转导的表征、磷脂相和管状结构、聚合物界面的反射率研究、聚合物/单体-液晶复合材料的表征、陶瓷涂层和膜的表征。衍射仪系统将与其他几种材料表征仪器组合在一起，作为一个自给自足的用户设施运行，由一名训练有素的工作人员在物理CML设施委员会的指导下进行维护。%*

9803098 Clark This award provides support to create a regional x-ray diffration facility on the Boulder campus of the University of Colorado. This facility will fill a critical need on the Colorado Front Range for high resolution, high intensity laboratory-based x-ray diffraction. This facility will be set up, operated, and maintained by the Condensed Matter Laboratory of the Department of Physics, and will be made available to materials research groups on the University of Colorado campus and the Colorado Front Range. The instrument will be versatile, allowing both high and low resolution diffraction, will accomodate large sample chambers, including cryostats, ovens, and magnetic fields, enabling experimentation over a wide range of sample temperatures, and will include an area detector, for static as well as time-resolved diffraction. The x-ray generator is a rotating anode system which provides two equivalent, point source x-ray beams. One beam will be directed to a 4 cycle diffractometer and scintillation detector for performing theta - two theta or h-k-l scanned diffraction. The other beam will be used in conjuction with an area detector for single crystallography, small angle x-ray scattering, and time-resolved experiments. Each beam path/sample holder/detector assembly will be mounted on its own optical table and will be independently controlled by its own computer, a configuration that will enable two experiments to be performed simultaneously. This acquisition has broad support among the regional materials science community, with users from several University of Colorado Departments, including Physics, Chemistry, Chemical Engineering, Mechanical Engineering, and Geology, as well as from industry and the major Front Range research institutions, including NIST, the National Renewable Energy Laboratory, Colorado School of Mines, Colorado State University, and University of Wyoming. Ongoing and new Research projects proposed by the PIs and ini tial roster of users represent a broad spectrum of field defining condensed phase research. Experiments are proposed in the following areas: structural analysis of liquid crystals, high Tc superconductors, laser-deposited metal oxide thin films, new liquid crystal materials development, structure of ion-selective membranes, development of atomic layer controlled film growth techniques, characterization of ribozyme - cationic lipid complexes for transfection of cells with RNA-based enzymes, structure of phospholipid phases and tubules, reflectivity studies of polymeric interfaces, characterization of polymer/monomer -liquid crystal composites, characterization of ceramic coatings and films. The diffractometer system will be clustered with several other materials characterization instruments and operated as a self-supporting user facility maintained by a trained staff member under the direction of the Physics CML Facilities Committee. %%% ***