MRI: Acquisition of a High-Resolution Analytical Scanning Transmission Electron Microscope for Materials and Engineering Research

MRI：购买高分辨率分析扫描透射电子显微镜用于材料和工程研究

• 批准号: 1828731
• 负责人: Abhaya Datye
• 金额: $ 175万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2023-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1828731&HistoricalAwards=false
• 关键词: MRI; Acquisition; Resolution; Analytical; Scanning

Non-Technical DescriptionThis Major Research Instrumentation (MRI) grant supports the acquisition of a transmission electron microscope capable of high resolution imaging and elemental composition analysis. The instrument is housed in the new Physics and Astronomy Interdisciplinary Sciences building at the University of New Mexico (UNM) and is part of a university-wide suite of instruments devoted to materials research. The instrument benefits faculty investigators, students and post-doctoral associates from seven different departments on the campus. It provides opportunities to train graduate and undergraduate students in advanced methods of materials characterization. The greatly expanded capabilities for new types of analysis lead to a significant improvement in the kind of research that can be conducted. This instrument is the first open access aberration-corrected scanning transmission electron microscope (S/TEM) in the Rio Grande corridor and is available to researchers at other academic institutions and industry. UNM is a Hispanic Serving Institution, hence significant numbers of students from underrepresented groups (Hispanic and Native American) benefit from this facility. The instrument is integrated into graduate and undergraduate courses and also used for demonstrations aimed at K-12 students and teachers to enhance their interest in science and engineering.Technical DescriptionThe transmission electron microscope is equipped with spherical aberration correctors to enable a finely focused probe scanning across the specimen, allowing images obtained in S/TEM mode. In addition, the dual, large-area, x-ray detectors enable rapid acquisition of spatially resolved elemental composition maps. Research projects enabled by the instrument include studies of novel catalysts for exhaust emissions control and for energy storage, fuel cells using earth abundant metals, inorganic membranes that permit gas separation at elevated temperatures, nanoparticles for drug delivery, and interface defects in semiconductor materials used in solar cells and in optical communications. The microscope is also used to study the environmental impact of toxic metals from mine wastes. The development of novel alloy compositions for nuclear reactors, improved cements to fortify deep underground exploration in oil wells, and ultra-conductive metal nanocarbon composites is also enabled by this instrument.This Major Research Instrumentation grant is supported using NSF funds allocated to the Division of Materials Research (DMR), Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET), and Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述本主要研究仪器（MRI）补助金支持获得能够进行高分辨率成像和元素成分分析的透射电子显微镜。该仪器位于新墨西哥州大学（UNM）新的物理学和天文学跨学科科学大楼内，是大学范围内专用于材料研究的仪器套件的一部分。该仪器有利于教师调查人员，学生和博士后助理从七个不同的部门在校园里。它提供了机会，培养研究生和本科生在先进的材料表征方法。新类型分析的能力大大扩展，导致可以进行的研究类型有了重大改进。该仪器是格兰德河走廊上第一台开放获取的像差校正扫描透射电子显微镜（S/TEM），可供其他学术机构和行业的研究人员使用。UNM是一个西班牙裔服务机构，因此来自代表性不足的群体（西班牙裔和美洲原住民）的大量学生受益于该设施。该仪器被整合到研究生和本科生课程中，也用于针对K-12学生和教师的演示，以提高他们对科学和工程的兴趣。技术说明透射电子显微镜配备了球面像差校正器，使聚焦探头能够在样品上扫描，从而在S/TEM模式下获得图像。此外，双，大面积，X射线探测器能够快速获取空间分辨元素组成图。该仪器支持的研究项目包括研究用于废气排放控制和能量存储的新型催化剂，使用地球丰富金属的燃料电池，允许在高温下分离气体的无机膜，用于药物输送的纳米颗粒，以及用于太阳能电池和光通信的半导体材料中的界面缺陷。显微镜还用于研究矿山废物中有毒金属对环境的影响。用于核反应堆的新型合金组合物的开发，用于加强石油威尔斯深层地下勘探的改进水泥，以及超导电金属纳米碳复合材料的开发也是通过该仪器实现的。该主要研究仪器补助金使用分配给材料研究部（DMR），化学，生物工程，环境和运输系统部（CBET），该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

The Role of Lewis Acid Sites in γ‐Al 2 O 3 Oligomerization

路易斯酸位点在 γAl 2 O 3 齐聚中的作用

• DOI: 10.1002/cphc.202300244
• 发表时间: 2023
• 期刊: ChemPhysChem
• 影响因子: 2.9
• 作者: Breckner, Christian J.;Pham, Hien N.;Dempsey, Michael G.;Perez‐Ahuatl, Michelle A.;Kohl, Alyssa C.;Lytle, Corryn N.;Datye, Abhaya K.;Miller, Jeffrey T.
• 通讯作者: Miller, Jeffrey T.

Metallic Cation-Mediated Entrapment of Nucleic Acids on Mesoporous Silica Surface: Application in Castration-Resistant Prostate Cancer

• DOI: 10.1021/acs.chemmater.3c01174
• 发表时间: 2023-12
• 期刊: Chemistry of Materials
• 影响因子: 8.6
• 作者: Angelea Maestas-Olguin;Marian Olewine;Sheymah Thabata;Johanna Tsala Ebode;Mariella Arcos;Jacob A Krawchuck;Eric N. Coker;A. Brearley;Xiang Xue;J. Watt;Achraf Noureddine;C. Brinker

The fate of primary iron sulfides in the CM1 carbonaceous chondrites: Effects of advanced aqueous alteration on primary components

CM1 碳质球粒陨石中原生铁硫化物的命运：高级水蚀变对原生成分的影响

• DOI: 10.1111/maps.14132
• 发表时间: 2024
• 期刊: Meteoritics & Planetary Science
• 影响因子: 2.2
• 作者: Singerling, S. A.;Corrigan, C. M.;Brearley, A. J.
• 通讯作者: Brearley, A. J.

Designing ultrastable Pt/CeO2-Al2O3 nanosheet catalysts for three-way catalysts applications

• DOI: 10.1016/j.cej.2023.147086
• 发表时间: 2023-11
• 期刊: Chemical Engineering Journal
• 影响因子: 15.1
• 作者: Junjie Chen;Chih-Han Liu;H. Pham;T. Toops;A. Datye;Eleni A. Kyriakidou

Epitaxial fluorapatite vein in Northwest Africa 998 host apatite: Clues on the geochemistry of late hydrothermal fluids on Mars

非洲西北部外延氟磷灰石矿脉 998 含有磷灰石：火星晚期热液地球化学线索

• DOI: 10.1111/maps.14042
• 发表时间: 2023
• 期刊: Meteoritics & Planetary Science
• 影响因子: 2.2
• 作者: Martínez, Marina;Shearer, Charles K.;Brearley, Adrian J.
• 通讯作者: Brearley, Adrian J.