MRI-R2: Acquisition of a SAXS/MAXS/WAXS Detector System for Nanoscale Studies of Soft Materials

0960140 Burghardt西北大学(技术)本奖项由2009年美国复苏和再投资法案(公法111-5)资助。X射线散射和衍射法是研究长度从0.1到100 nm的软材料结构的有力工具。NSF MRI-R2基金将支持购买和调试独特的小、中、广角(SAXS/MAXS/WAXS)探测器系统，该系统将安装在Argonner国家实验室高级光子源的Beamline 5ID-D上。新的探测器系统将提供前所未有的能力，包括：(I)无缝覆盖相互空间？这些技术包括：(I)在长度尺度上跨越三个数量级；(Ii)获得散射矢量整个可访问范围内的完整二维散射数据；(Iii)在现有探测器的基础上大幅提高灵敏度和帧速率，使APS波荡器辐射的全部潜力得以充分利用；以及(Iv)作业效率显著提高，因为单一、稳定的终端站配置满足了绝大多数5ID-D用户的需求，避免了破坏性的布局变化。这个联盟的工作将由西北大学的调查人员与明尼苏达大学的同事合作领导，他们是主要的普通用户？5ID-D。新的探测器能力将有利地影响多个领域的研究，如聚合物和其他复杂流体的动力学和加工；纳米级DNA介导的自组装过程；蛋白质/核酸和蛋白质/脂复合体的生物物理研究；嵌段共聚物理；聚合物变形；用于太阳能转换和催化的纳米材料；聚合物膜表征；仿生自组装和生物矿化。通过高级光子源的通用用户计划，这一功能强大的仪器将提供给整个美国X射线散射界，从而为国家-S研究基础设施以及大量学生和博士后研究人员的教育和培训做出贡献。MRI-R2财团：收购SAXS/MAXS/WAXS探测器系统，用于软材料的纳米级研究韦斯利·伯格哈特、查德·米尔金、阿方索·蒙德拉根、明尼苏达西北大学弗兰克·S·贝茨和蒂莫西·P·洛奇ABSTRACT(非技术性)该奖项由2009年美国复苏和再投资法案(公法111-5)资助。国家？用户设施？形成支撑美国科学、工程和技术竞争力的重要基础设施。通过为研究人员提供获得尖端实验能力的途径，这些设施还为教育和培训一支复杂的科学队伍做出了实质性贡献。西半球主要的X射线科学设施是位于阿贡国家实验室的高级光子源(APS)。APS产生极强的X射线束，可用于研究生物、化学、物理、材料和技术中的基本问题。一种称为X射线散射的技术，涉及测量X射线束被偏转或散射的方式。由样本？S的微观内部结构。对散射图像的分析提供了对样本S结构的深入了解，其长度范围从~0.1 nm(原子大小)到~100 nm(蛋白质等超大分子的大小)。在该项目中，MRI-R2资金将用于采购和调试将安装在先进光子源的新探测器系统，以极大地提高X射线散射研究的能力。探测器就是摄像机吗？它们收集散射图像，因此是X射线散射技术的核心。这个项目中正在开发的独特系统将结合三个独立的探测器，从而实现对样品的同时调查？使用X射线散射研究的整个长度范围内的结构(根据厌食学，想象一台相机可以同时拍摄一只狗和坐在狗身上的跳蚤的高质量照片？S回来了)。探测器还将以比目前可用的系统更高的速度运行，从而实现实时？分子和纳米尺度结构动力学的研究。通过在高级光子源的安装，这些新的能力将为来自美国各地的科学家提供，并用于生物学、纳米科学和化学中的基本问题的研究，以及聚合物催化剂和其他工程材料的表征和加工方面的技术导向工作。

0960140BurghardtNorthwestern U.ABSTRACT (TECHNICAL)This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). X-ray scattering and diffraction methods are powerful tools for studying the structure of soft materials on length scales ranging from ~ 0.1 to 100 nm. NSF MRI-R2 funds will support acquisition and commissioning of a unique small-, medium- and wide-angle (SAXS/MAXS/WAXS) detector system to be installed at Beamline 5ID-D at the Advanced Photon Source of Argonner National Laboratory. The new detector systems will offer unprecedented capabilities, including: (i) seamless coverage of ?reciprocal space? spanning three orders of magnitude in length scale; (ii) access to full two-dimensional scattering data over the entire accessible range of scattering vector; (iii) substantial upgrades in sensitivity and frame rate over currently available detectors, enabling the full potential afforded by APS undulator radiation to be harnessed; and (iv) significant improvements in operational efficiency, as a single, stable, end-station configuration meets the needs of the vast majority of 5ID-D users, avoiding disruptive layout changes. This consortium effort will be led by investigators from Northwestern in partnership with colleagues from the University of Minnesota who are major ?General Users? of 5ID-D. The new detector capabilities will favorably impact research in diverse areas such as dynamics and processing of polymers and other complex fluids; nano-scale DNA-mediated self-assembly processes; biophysical studies of protein/nucleic acid and protein/lipid complexes; block copolymer physics; polymer deformation; nanomaterials for solar energy conversion and catalysis; polymer membrane characterization; biomimetic self-assembly and biomineralization. Through the General User program of the Advanced Photon Source, this powerful instrumentation will be made available to the entire US x-ray scattering community, and thereby contribute to the nation?s research infrastructure, and to the education and training of a large number of students and post doctoral researchers. MRI-R2 CONSORTIUM: ACQUISITION OF A SAXS/MAXS/WAXS DETECTOR SYSTEM FOR NANOSCALE STUDIES OF SOFT MATERIALSProposal #0960140Wesley Burghardt, Chad Mirkin, Alfonso Mondragon Northwestern UniversityFrank S. Bates and Timothy P. Lodge University of MinnesotaABSTRACT (NONTECHNICAL)This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). National ?User Facilities? form a vital infrastructure supporting US competitiveness in science, engineering and technology. By providing researchers access to cutting edge experimental capabilities, such facilities also contribute materially to the education and training of a sophisticated scientific workforce. The premier facility for x-ray science in the western hemisphere is the Advanced Photon Source (APS), located at Argonne National Laboratory. The APS generates extremely intense x-ray beams that may be used in many ways to study fundamental problems in biology, chemistry, physics, materials, and technology. One class of techniques, known as ?x-ray scattering?, involves measuring the way in which a beam of x-rays is deflected or ?scattered? by a sample?s microscopic internal structure. Analysis of scattering images provides deep insights into a sample?s structure over length scales from ~ 0.1 nm (the size of atoms) to ~ 100 nm (the size of very large molecules such as proteins). In this project, MRI-R2 funds will be used for the acquisition and commissioning of a new detector system to be installed at the Advanced Photon Source to greatly enhance capabilities for x-ray scattering research. Detectors are the ?cameras? that collect scattering images, and hence are at the heart of x-ray scattering techniques. The unique system being developed in this project will combine three separate detectors that will enable simultaneous investigation of samples? structure over the entire range of length scales studied using x-ray scattering (by anaology, imagine a camera that can simultaneously take a high quality picture of both a dog and a flea sitting on the dog?s back). The detectors will also operate at much higher speed than currently available systems, allowing ?real time? studies of molecular and nano-scale structural dynamics. Through its installation at the Advance Photon Source, these new capabilities will be made available scientists from all over the US, and used for studies of fundamental problems in biology, nanoscience and chemistry, as well as in technologically-oriented work in the characterization and processing of polymers catalysts, and other engineering materials.