MRI: Acquisition of an X-Ray Tomography Microscope Supporting Multidisciplinary Fundamental and Applied Research

MRI：购买 X 射线断层扫描显微镜支持多学科基础和应用研究

基本信息

批准号：
1531871
负责人：
Craig Arnold
金额：
$ 58.61万
依托单位：
Princeton University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2015
资助国家：
美国
起止时间：
2015-09-15 至 2019-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1531871&HistoricalAwards=false
关键词：
MRI Acquisition Ray Tomography Microscope

项目摘要

1531871(Arnold)Addressing today's grand challenges in energy, environment, health, and security relies on the development of novel materials with extraordinary properties and the understanding of natural materials tasked with unprecedented performance. The properties and performance of a material depend on its structure across different size scales and although much information can be gained by looking at the surface, to truly understand the design and use of materials it is necessary to characterize their internal three dimensional structure without destroying the systems or devices in which they are used. This project seeks to achieve this goal by acquiring an X-Ray tomographic microscope (XRM) capable of visualizing the three dimensional structure of materials with submicron spatial resolution while controlling such environmental variables as tension-compression, temperature and fluid flow and without destroying the sample in the process. In doing so, Princeton will be able to complement its existing expertise in two dimensional characterization and create a user facility that will open the door to new kinds of characterization aimed at developing a deeper understanding of materials ranging across areas such as biological materials for tissue engineering, geological materials for carbon sequestration, or electrochemical materials for energy storage. These and numerous other frontier research efforts will enable Princeton and neighboring researchers to meaningfully and substantially contribute to the solution of pressing problems confronting the nation and the world. The XRM's ability to visualize the internal structures of materials will be incorporated to education and outreach programs that seek to inspire and excite young people about science and engineering and to instill confidence and motivation for academic achievement. The goal of this project is to create a user facility that enables non-destructive, time resolved, 3-D structural and chemical characterization of materials to probe aspects of structure-property-processing-performance relations, formation and evolution of defects, compositional heterogeneity, and the spatial organization of phases for broad classes of materials. Through this funding we will acquire an X-Ray tomographic microscope (XRM) capable of visualizing the 3D structure of materials with submicron spatial resolution and the added ability to control such environmental variables as tension-compression, temperature and fluid flow. The x-ray microscope has a unique source-sample-detector design that provides unprecedented sensitivity to contrast imaging along with multiple length scale imaging of the same sample, spanning the nanometer scale (100 nm voxel dimension) up to the device-scale (25 micron voxel). Users will come from across the sciences and engineering, and specimens of immediate interest will include batteries, fuel cells, electronic devices, polymers, composites, biofilms, living tissues, cements, rock cores, sediments, vegetation and soil cores. This XRM's large working distances provide space for in situ cells that will be developed to enable time-dependent, in situ, nondestructive studies of materials under their real-world operating conditions.

1531871（Arnold）应对当今能源，环境，健康和安全方面的巨大挑战，依赖于具有非凡属性的新型材料的开发以及对以前所未有的绩效任务的自然材料的理解。材料的特性和性能取决于其在不同尺寸尺度上的结构，尽管可以通过查看表面来获得许多信息，但要真正了解材料的设计和使用，但必须表征其内部三维结构而不破坏使用它们的系统或设备。该项目旨在通过获取能够以亚微米空间分辨率可视化材料的三维结构的X射线断层扫描显微镜（XRM），同时控制诸如张力压缩，温度和流体流量等环境变量，并且在此过程中不破坏样品的情况下。这样一来，普林斯顿将能够以二维表征来补充其现有的专业知识，并创建一个用户设施，该设施将为旨在对跨区域的材料，例如用于组织工程的生物材料，用于碳序列的地质材料或用于储能的电力化学材料等领域的材料的更深入了解。这些以及许多其他边界研究工作将使普林斯顿和邻近的研究人员能够有意义而实质性地有助于解决面对国家和世界面临的问题。 XRM可视化材料内部结构的能力将纳入旨在激发和激发年轻人的科学和工程学以及灌输学术成就的信心和动力的教育和外展计划。该项目的目的是创建一个用户设施，以实现材料的无损，时间解决，3-D结构和化学表征，以探测结构性 - 性能处理 - 性能关系 - 缺陷，组成异质性的形成和发展的形成和演变，以及用于广泛材料类别的阶段的空间组织。通过这笔资金，我们将获得一个X射线断层造影显微镜（XRM），能够可视化具有亚微米空间分辨率的材料的3D结构，并增加了控制张力压缩，温度和流体流量等环境变量的能力。 X射线显微镜具有独特的源样本检测器设计，可为对比度成像以及同一样品的多长度尺度成像提供前所未有的灵敏度，跨越纳米尺度（100 nm Voxel尺寸），直至设备尺度（25 micron Voxel）。用户将来自跨科学和工程，而直接感兴趣的标本将包括电池，燃料电池，电子设备，聚合物，复合材料，生物膜，生物膜，生物组织，水泥，岩石岩心，沉积物，植被和土壤岩心。该XRM的较大的工作距离为原位细胞提供了空间，这些空间将被开发，以实现时间依赖性的原位，对材料在其现实世界中的工作条件下的非破坏性研究。