MRI: Acquisition of SAXS for Nanostructural Characterization of Self-Assembled Materials

MRI：获取 SAXS 用于自组装材料的纳米结构表征

• 批准号: 0521079
• 负责人: Lynn Walker
• 金额: $ 43.04万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-15 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521079&HistoricalAwards=false
• 关键词: MRI; Acquisition; SAXS; Nanostructural; Characterization

CTS-0521079-MRI Walker Carnegie Mellon University Acquisition of SAXS for Nanostructural Characterization of Self-Assembled Materials This project provides funds to purchase a laboratory small-angle x-ray scattering (SAXS) device to be used as a shared "facility." Initially, the facility will be used by nine research groups representing 6 departments in 2 colleges at Carnegie Mellon University (CMU). The theme that connects all of the projects is the development of technologies and applications based on self-assembled nano-structured materials. While the types of materials and applications vary significantly, the common need is for direct in situ quantification of nano-scale structure. The proposed SAXS device meets the needs of the group, as it is a modular, robust instrument with relatively low maintenance requirements. A laboratory is available to house the proposed device, and four of the senior investigators have developed a plan to oversee the regular maintenance, scheduling and use of the facility. A significant need for accessible, in-house SAXS has developed in several departments at CMU. The SAXS facility at CMU will attract more researchers, nucleating a group of graduate students, post-docs and faculty trained in the analytical techniques necessary for characterization of nano-scale structure, particularly in self-assembled systems.Intellectual Merit: Research in self-assembled nanostructured materials and applications was currently hindered at CMU by a lack of appropriate structural characterization equipment. The potential for initiation of new projects and ideas is not being recognized without a central facility for characterization and training. An accessible SAXS device facilitates existing research and nucleates new collaborations and projects. Currently, there is a core group of faculty and projects focused on utilizing self-assembly in block copolymers to control nano-scale structure in both organic and inorganic materials. Because of the expertise available and interdisciplinary environment at CMU, these projects span the synthesis, complete characterization and device development of technologies based on assembled block copolymers. Ongoing projects involve development of sensor technology based on conductive polymers, 3D-structured organic-inorganic nano-composites and novel processing paradigms for nano-structured thin films, among others. Associated with this core group are a number of projects covering a broader range of materials with a similar need for nano-scale characterization. These projects include the control (through synthesis) of self assembly of bio-macro-molecules for DNA separation and tissue engineering applications as well as the control of nano-particle assembly in confined geometries for microfluidic applications and formation of 2D Nano-particle arrays.Broader Impact: Accessibility of this equipment will allow for training of engineers and scientists in the use of SAXS for nano-structural characterization. This direct exposure will impact graduate students, postdoctoral and undergraduate researchers at CMU. Industrial researchers will be involved through an existing short course, research consortia and collaborations with faculty members. The increased interactions between different research groups involved with the facility will provide the opportunity for developing modules to teach the basic ideas of molecular self-assembly and nano-technology to a wide variety of age groups. Currently, none of the highly successful outreach programs at CMU involve programs discussing nano-scale phenomena or nano-technology. Senior investigators on this proposal are already involved in these outreach programs, a central SAXS facility will allow for the interactions necessary to develop simple, yet explanatory tools for dissemination through various outreach programs at CMU

卡耐基梅隆大学获得SAXS用于自组装材料的纳米结构表征本项目提供资金购买实验室小角度x射线散射（SAXS）设备，作为共享“设施”使用。最初，该设施将由代表卡内基梅隆大学（CMU）两个学院6个系的9个研究小组使用。连接所有项目的主题是基于自组装纳米结构材料的技术和应用的发展。虽然材料的类型和应用有很大的不同，但共同的需求是对纳米级结构的直接原位量化。所提出的SAXS设备满足了该集团的需求，因为它是一个模块化的，坚固的仪器，维护要求相对较低。有一个实验室可以容纳拟议的设备，四名高级调查员已经制定了一项计划，以监督该设施的定期维护、调度和使用。CMU的几个部门对可访问的内部SAXS有了很大的需求。CMU的SAXS设施将吸引更多的研究人员，培养一批在纳米级结构（特别是自组装系统）表征所需的分析技术方面受过培训的研究生、博士后和教师。智力优势：由于缺乏适当的结构表征设备，目前CMU对自组装纳米结构材料及其应用的研究受到阻碍。如果没有一个特点和培训的中心设施，就无法认识到发起新项目和想法的潜力。可访问的SAXS设备促进了现有的研究，并促成了新的合作和项目。目前，有一个核心的教师和项目小组专注于利用嵌段共聚物的自组装来控制有机和无机材料的纳米级结构。由于CMU的专业知识和跨学科环境，这些项目涵盖了基于组装嵌段共聚物技术的合成、完整表征和设备开发。正在进行的项目包括基于导电聚合物的传感器技术的开发，3d结构有机-无机纳米复合材料和纳米结构薄膜的新型加工范例等。与这个核心小组相关的一些项目涵盖了更广泛的材料，具有纳米级表征的类似需求。这些项目包括控制（通过合成）用于DNA分离和组织工程应用的生物大分子的自组装，以及用于微流控应用的纳米粒子在受限几何结构中的组装和二维纳米粒子阵列的形成。更广泛的影响：该设备的可获得性将允许工程师和科学家在使用SAXS进行纳米结构表征方面进行培训。这种直接接触将影响CMU的研究生、博士后和本科生研究人员。工业研究人员将通过现有的短期课程、研究联盟和与教员的合作参与其中。参与该设施的不同研究小组之间增加的互动将为开发模块提供机会，向各种年龄段的人教授分子自组装和纳米技术的基本思想。目前，CMU没有一个非常成功的外展项目涉及纳米尺度现象或纳米技术的讨论。该提案的高级研究人员已经参与了这些外展项目，一个中央SAXS设施将允许必要的互动，以开发简单但解释性的工具，以便通过CMU的各种外展项目进行传播