Acquisition of a Charged Coupled Device (CCD) High Intensity X-ray Diffraction System for Materials Synthesis

9512503将获得电荷耦合器件、高强度X射线衍射仪，并将其用于材料合成和生物技术研究。该CCD探测器和相关软件可实现近单光子探测效率和512x512像素的快速读出时间。该仪器的易用性和快速筛选时间将允许快速表征小到几微米的晶体，以及在X射线束中不稳定并倾向于恶化的分子晶体。生物分子相和具有大单胞结构的液晶/膜基复合材料可以产生很大范围的散射强度，这种仪器将在结构上实现。还将研究沸石、多孔介观结构材料，以及因其低散射截面而无法以其他方式表征的富勒型结构。该仪器在灵敏度方面的巨大改进，与现有的核磁共振资源相结合，为研究复杂的偏序聚合物材料提供了一种独特的能力。%高灵敏度、快速数据收集、x射线衍射仪将实现新的材料表征能力，这将影响现有100多名学生和教职员工的跨学科项目。它将促进与先进材料的设计、合成和加工有关的研究项目，研究复杂流体和生物系统中的非平衡转化，以及蛋白质结构-性质关系。***

9512503 Stucky A charge coupled device (CCD), high intensity X-ray diffractometer will be acquired and utilized for materials synthesis and biotechnology research. The CCD detector and associated software allow for nearly single photon detection efficiency and rapid readout time of 512x512 pixels. The ease of use and rapid screening time of this instrument will permit the quick characterization of crystals as small as a few micrometers and of molecular crystals that are unstable and tend to deteriorate in the X-ray beam. Biomolecular phases and liquid crystal/membrane based composites with large unit cell structures that produce a large range of scattered intensities will be structurally accessible with this instrument. Zeolites, porous mesostructured materials, and fullerine-type structures that cannot be otherwise characterized because of their low scattering cross section, will also be studied. The large improvement in sensitivity provided by this instrument, in combination with available nuclear magnetic resonance (NMR) resources, represents a unique capability for studying complicated partially ordered polymeric materials. %%% The high sensitivity, fast data collection, x-ray diffractometer will enable a new materials characterization capability that will impact an existing interdisciplinary program of over one hundred students and faculty. It will facilitate research programs concerned with the design, synthesis, and processing of advanced materials, studies of non- equilibrium transformations in complex fluids and biological systems, and protein structure-property relationships. ***