Acquisition of a High-Resolution, Point-Focusing Small-Angle X-Ray Scattering System for Nanostructured Materials Research and Education

获取用于纳米结构材料研究和教育的高分辨率、点聚焦小角度 X 射线散射系统

• 批准号: 0215578
• 负责人: Richard Register
• 金额: $ 15.2万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2004-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0215578&HistoricalAwards=false
• 关键词: Acquisition; Resolution; Point; Focusing; Small

This award from the Instrumentation for Materials Research program funds a major enhancement of the capabilities for small-angle x-ray scattering (SAXS) located at Princeton University. The award permits the acquisition of a point-focusing SAXS instrument, which will be shared principally amongst users at Princeton and the New Jersey Institute of Technology (NJIT). This instrument uses double-focusing mirror/monochromator optics to focus a substantial solid angle of x-radiation to a small spot in the detector plane. This optical geometry provides access to the very small angles needed to characterize structures with size scales from 1-100 nm. SAXS also has the important advantage of being readily adapted for in-situ measurements; cells for operation at elevated temperature and a scanning calorimeter stage will be incorporated into the SAXS system. Since this instrument permits detailed characterization of anisotropic specimens with structure on the nanoscale, it will support a range of research avenues where controlling the orientation of nanostructural features is the aim. Projects at Princeton and NJIT which will this instrument will support are directed towards: guided self-assembly of mesoporous silicates through applied electric fields; templated crystallization in block copolymers; new nanostructured organic/inorganic composites for proton exchange membrane fuel cells; orientation of block copolymers and block copolymer/carbon nanotube composites; and structure-property-processing relationships in crystalline polymer fibers and crystallizable ionomers. The instrument will be used by researchers ranging from postdocs to undergraduates, from Princeton, NJIT, and elsewhere. Moreover, the modular nature of the SAXS system encourages the design of new sample stages and modification of existing modules, thus allowing students the opportunity to gain valuable experience in instrument design.%%%This award from the Instrumentation for Materials Research program funds a major enhancement of the capabilities for small-angle x-ray scattering (SAXS) located at Princeton University. SAXS is a powerful technique for characterizing nanostructured materials (size scales from 1-100 nm), and fully complements existing electron and scanning probe microscopy facilities at Princeton. The new SAXS instrument will be shared amongst users at Princeton and the New Jersey Institute of Technology (NJIT) and elsewhere in the study of organic, inorganic, and composite materials with applications as diverse as nanoporous filters, membranes for portable fuel cells, and biodegradable polymer fibers. The state-of-the-art instrument will be incorporated into a facility with two existing SAXS systems (of complementary, but more limited, capabilities). Users will include postdoctoral researchers, graduate students, and undergraduates, the last of these through both undergraduate research and by utilizing the instrument in an undergraduate materials science laboratory course.

该奖项来自材料研究计划的仪器，用于资助普林斯顿大学小角度X射线散射（SAXS）能力的重大增强。 该奖项允许购买点聚焦SAXS仪器，该仪器将主要由普林斯顿大学和新泽西理工学院（NJIT）的用户共享。 该仪器使用双聚焦镜/单色光学器件将X辐射的大立体角聚焦到检测器平面中的小光斑。 这种光学几何形状提供了表征尺寸范围为1-100 nm的结构所需的非常小的角度。 小角X射线散射也有一个很重要的优点，即很容易适应现场测量;在高温下工作的电池和扫描量热仪阶段将被纳入小角X射线散射系统。 由于该仪器允许在纳米尺度上对具有结构的各向异性试样进行详细表征，因此它将支持一系列以控制纳米结构特征的取向为目标的研究途径。 该仪器将支持的普林斯顿大学和NJIT的项目旨在：通过外加电场引导中孔硅酸盐的自组装;嵌段共聚物中的模板结晶;质子交换膜燃料电池的新型纳米结构有机/无机复合材料;嵌段共聚物和嵌段共聚物/碳纳米管复合材料的取向;以及结晶聚合物纤维和可结晶离聚物的结构-性能-加工关系。 该仪器将被从博士后到本科生，从普林斯顿大学，NJIT和其他地方的研究人员使用。 此外，SAXS系统的模块化特性鼓励设计新的样品台和修改现有模块，从而使学生有机会获得仪器设计方面的宝贵经验。%该奖项来自材料研究计划的仪器，用于资助普林斯顿大学小角度X射线散射（SAXS）能力的重大增强。 SAXS是表征纳米结构材料（尺寸范围从1-100 nm）的强大技术，并完全补充了普林斯顿现有的电子和扫描探针显微镜设施。 新的SAXS仪器将在普林斯顿和新泽西理工学院（NJIT）以及其他地方的用户中共享，用于研究有机，无机和复合材料，其应用范围广泛，如纳米多孔过滤器，便携式燃料电池膜和可生物降解的聚合物纤维。 这台最先进的仪器将与现有的两个小角X射线散射系统（功能互补，但更有限）一起使用。 用户将包括博士后研究人员，研究生和本科生，其中最后一个通过本科研究和利用仪器在本科材料科学实验室课程。