MRI Acquisition: An integrated platform for combined multi-scale mechanical and chemical analysis to inform functional materials design

MRI 采集：结合多尺度机械和化学分析的集成平台，为功能材料设计提供信息

• 批准号: 1338154
• 负责人: Virginia Ferguson
• 金额: $ 43.41万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1338154&HistoricalAwards=false
• 关键词: MRI; Acquisition; integrated; platform; combined

1338154FergusonThe proposed system facilitates multimodal analysis of a single ROI on one modular platform by integrating an Atomic Force Microscope, an Ultra Nanoindentation Tester (max depth = 100 ìm; load = 50 mN), a Nanoindentation Tester (1000 ìm; 500 mN), and an optical microscope through which 2-D Raman microscopy (514 or 785 nm lasers) is performed. A high precision translation stage moves samples between modules. This proposed instrument will facilitate combined mechanical analysis, across multiple small length-scales, with determination of chemical composition at a single ROI. AFM and nanoindentation are well-established techniques for assessing stiff, conventional engineering materials. Yet most commercially available nanoindenters fail to accurately test materials that are hydrated, soft, or subjected to thermal changes. The CSM Instruments platform adeptly overcomes limitations of existing indenter systems by using one independent probe to find a sample's surface and continuously monitor thermal drift while a second probe indents the sample - critical for soft or fluid-like surfaces. Integration with a Raman microscope will facilitate combined analysis of mechanical behavior and materials chemistry in one exact ROI. Acquisition of this system at CU Boulder will inform design of cutting-edge materials in an unparalleled fashion and enhance our activities in world-class materials research.

所提出的系统通过集成原子力显微镜、超纳米压痕测试仪（最大深度= 100 μ m;载荷= 50 mN）、纳米压痕测试仪（1000 μ m; 500 mN）和光学显微镜（通过该光学显微镜进行2-D拉曼显微术（514或785 nm激光）），促进了在一个模块化平台上对单个ROI的多模态分析。高精度平移台在模块之间移动样品。这种拟议的仪器将有助于在多个小的长度尺度上进行组合力学分析，并在单个ROI处确定化学成分。原子力显微镜和纳米压痕是公认的技术，用于评估刚性，传统的工程材料。然而，大多数市售的纳米压痕仪无法准确地测试水合的、软的或经受热变化的材料。CSM Instruments平台巧妙地克服了现有压头系统的局限性，它使用一个独立的探针找到样品表面并连续监测热漂移，同时使用第二个探针对样品进行压痕-这对于软或流体状表面至关重要。与拉曼显微镜的集成将有助于在一个精确的ROI中对机械行为和材料化学进行组合分析。在CU Boulder收购该系统将以无与伦比的方式为尖端材料的设计提供信息，并加强我们在世界级材料研究方面的活动。