MRI: Acquisition of a Tecnai TS 20 Field Emitter Transmission Electron Microscope

MRI：购买 Tecnai TS 20 场发射透射电子显微镜

• 批准号: 0922667
• 负责人: David Paine
• 金额: $ 70万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-10-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0922667&HistoricalAwards=false
• 关键词: MRI; Acquisition; Tecnai; TS; 20

0922667PaineBrown U."This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."Technical AbstractThis MRI proposal by Brown University requests support for the acquisition of an FEI Tecnai S20 transmission electron microscope (TEM) to serve the nanoscale imaging and micro/nano-characterization needs of the local research community. The proposed instrument addresses the need at Brown for a modern TEM imaging tool that will allow both conventional materials science studies for the understanding of the microstructure of materials used in electronic, structural, and biological applications and, at the higher resolutions at lower energies available with a field emitter (FE) source, new applications in biomedical and soft-matter physics. This tool will provide both the versatility and flexibility to satisfy the needs of our diverse research community by combining high performance in all imaging and diffraction modes with the ease of operation needed in a multi-user materials research environment. It will enable new material sciences research pursued by the faculty and students in departments across the physical sciences and beyond at Brown, including Engineering, Physics, Chemistry, Geology, Biology, Archaeology and Biomedicine. Some ongoing research that will make use of the new FE TEM includes: studies of the nanoscale features of highly localized adiabatic shear bands formed in high strain rate deformation of steel; creation of nanopore-based prototype device structures for biomolecule analysis; analysis of interfaces and microstructure in the materials used in oxide electronics; understanding growth-related crystallographic defects in nanowire structures fabricated via novel chemical pathways; and evaluation of inclusions for the identification of the origins of archeological glass samples. More broadly, the selected instrument will provide the local research community with a capability that is not currently available anywhere in the state of Rhode Island. Non-Technical AbstractThe Brown University materials research community encompasses a diversity of disciplines that share a common interest in understanding materials at the atomic level. The acquisition of a modern transmission electron microscope (TEM) will enable researchers in Engineering, Physics, Chemistry, Geology, Biology, and Archaeology to probe, image, and chemically characterize the structure of materials synthesized through a wide range of chemical, metallurgical, physical and biological processes. In the last century, it was discovered that a beam of electrons passing through a thin sample will interact with the sample?s atoms in ways that provide a wealth of chemical and structural insights while simultaneously providing images of features that are just a few atoms or molecules in size and impossible to see by other means. Researchers at Brown and the neighboring research community will use the capabilities of the new field emitter TEM (the only one in Rhode Island) to understand and ultimately control the nano- and micro- structure of materials used in a wide array of applications, Current research at Brown that will utilize this new capability includes: development of devices for the detection of DNA and other biomolecules, new oxide-based electronic devices, battery and fuel cell materials, and it will play a key role in the development of materials that are both strong and lightweight for improved energy efficiency in automotive and aerospace applications.

0922667 PaineBrown U.“该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“技术摘要布朗大学的这份MRI提案要求支持购买FEI Tecnai S20透射电子显微镜（TEM），以满足当地研究界的纳米级成像和微/纳米表征需求。拟议的仪器解决了布朗需要一个现代的TEM成像工具，将允许传统的材料科学研究，用于电子，结构和生物应用中使用的材料的微观结构的理解，并在更高的分辨率在较低的能量可用的场发射体（FE）源，在生物医学和软物质物理学的新应用。 该工具将提供多功能性和灵活性，以满足我们不同的研究社区的需求，通过结合在所有成像和衍射模式的高性能，在多用户材料研究环境中所需的易于操作。它将使教师和学生在布朗大学的物理科学和其他部门进行新的材料科学研究，包括工程，物理，化学，地质学，生物学，考古学和生物医学。 一些正在进行的研究，将利用新的FE TEM包括：在高应变率变形的钢形成的高度局部化的绝热剪切带的纳米尺度特征的研究;创建基于纳米孔的原型设备结构的生物分子分析;在氧化物电子学中使用的材料的界面和微观结构的分析;了解通过新的化学途径制造的纳米线结构中与生长相关的晶体学缺陷;以及评估用于鉴定考古玻璃样品来源的夹杂物。更广泛地说，选定的仪器将为当地研究界提供罗得岛州任何地方目前都没有的能力。 布朗大学的材料研究社区包含了多种学科，这些学科在原子水平上对材料的理解有着共同的兴趣。现代透射电子显微镜（TEM）的获得将使工程，物理，化学，地质，生物和考古学的研究人员能够探测，成像和化学表征通过广泛的化学，冶金，物理和生物过程合成的材料的结构。 在上个世纪，人们发现一束电子穿过一个薄的样品会与样品相互作用？S原子的方式，提供了丰富的化学和结构的见解，同时提供图像的功能，只有几个原子或分子的大小和不可能看到的其他手段。 布朗大学和邻近研究社区的研究人员将使用新的场发射TEM的能力（罗得岛唯一一家）了解并最终控制广泛应用中使用的材料的纳米和微观结构，布朗大学目前将利用这种新能力的研究包括：开发用于检测DNA和其他生物分子的设备，新的基于氧化物的电子设备，电池和燃料电池材料，它将在开发既坚固又轻质的材料以提高汽车和航空航天应用的能源效率方面发挥关键作用。