MRI: Acquisition of Focused Ion Beam-Scanning Electron Microscope for Nanofabrication and Characterization

MRI：获取聚焦离子束扫描电子显微镜以进行纳米加工和表征

• 批准号: 1726897
• 负责人: Dhanesh Chandra
• 金额: $ 64.01万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1726897&HistoricalAwards=false
• 关键词: MRI; Acquisition; Focused; Ion; Beam

This Major Research Instrumentation (MRI) award will support the acquisition of a dual beam Focused Ion Beam/Scanning Electron Microscope system. This system meets a critical need for a synthesis, characterization and fabrication tool for materials and devices at the nanometer-to-atomic length scales. It will enable fundamental research in nano- and micro- structured materials and devices, materials interfaces, catalyst characterization and nano-mechanical testing leading to novel material systems such as high strength steels and lightweight alloys for enhanced energy efficiency. It will advance multidisciplinary research programs in science and engineering, ranging from structural engineering materials, energy and functional materials to nanostructured materials and devices and fundamental physics. This award will also support an array of new educational and research training activities focused on advanced manufacturing, characterization and nano-mechanical testing, ranging from K-12 to graduate levels, which will help develop the future science, technology, engineering and mathematics workforce and increase the participation of underrepresented students. The dual beam Focused Ion Beam system can produce ultra-high resolution images for characterization and the fabrication of nm-to-µm scale structures. Key projects include (1) Research on interfacial structures of galvanized high strength steels and lightweight magnesium alloys for automotive applications--to better understand complex interfacial reactions at the nanoscale; (2) Studies of glassy metals to reveal atomic arrangements or clusters on the atomic scale; (3) New avenues for nano-mechanical characterization of Mg-X nanolaminates for ultra- high strength and formability; (4) Probing nanoscale damage gradients in irradiated materials; (5) Mechanical behavior of both bulk and nanomaterials at very high strain rates generated by Laser pulses; (6) High-throughput alloy screening technique which will enable design of multi-principal component or high entropy alloys. The instrumentation will enable cross disciplinary research and will dramatically facilitate collaborations with other institutions.

该重大研究仪器 (MRI) 奖项将支持购买双束聚焦离子束/扫描电子显微镜系统，该系统满足纳米到原子材料和器件的合成、表征和制造工具的关键需求。它将促进纳米和微米结构材料和器件、材料界面、催化剂表征和纳米机械测试方面的基础研究，从而开发出高强度钢和轻质合金等新型材料系统，以提高能源效率。该奖项还将支持一系列以先进制造、表征和纳米为重点的新教育和研究培训活动。 -机械测试，范围从 K-12 到研究生水平，这将有助于培养未来的科学、技术、工程和数学劳动力，并增加代表性不足的学生的参与。双束聚焦离子束系统可以为学生生成超高分辨率图像。表征和关键项目包括（1）汽车应用的镀锌高强度钢和轻质镁合金的界面结构研究——以更好地理解纳米尺度的复杂界面反应；（2）玻璃态的研究；金属以揭示原子尺度上的原子排列或簇；(3) Mg-X 纳米层压材料纳米力学表征的新途径，以实现超高强度和可成形性；辐照材料中的纳米级损伤梯度；（5）激光脉冲产生的极高应变率下块体和纳米材料的机械行为；（6）高通量合金筛选技术，这将有助于设计多主成分或高熵合金。该仪器将实现跨学科研究，并将极大地促进与其他机构的合作。

项目成果

Digital Processing for Single Nanoparticle Electrochemical Transient Measurements

单纳米颗粒电化学瞬态测量的数字处理

• DOI: 10.1021/acs.analchem.9b05238
• 发表时间: 2020-07
• 期刊: Analytical Chemistry
• 影响因子: 7.4
• 作者: Gutierrez;Sauer, Kiley;Karunathilake, Nelum;Subedi, Pradeep;Alpuche
• 通讯作者: Alpuche

Abnormal twin-twin interaction in an Mg-3Al-1Zn magnesium alloy processed by laser shock peening

激光冲击强化 Mg-3Al-1Zn 镁合金中异常孪晶相互作用

• DOI: 10.1016/j.scriptamat.2019.02.028
• 发表时间: 2019-05
• 期刊: Scripta Materialia
• 影响因子: 6
• 作者: Mao, Bo;Liao, Yiliang;Li, Bin
• 通讯作者: Li, Bin

Room temperature deformation mechanisms of Mg/Nb nanolayered composites

Mg/Nb纳米层状复合材料的室温变形机制

• DOI: 10.1557/jmr.2018.107
• 发表时间: 2018-05-01
• 期刊: Journal of Materials Research
• 影响因子: 2.7
• 作者: M. Ardeljan;M. Knezevic;Manish Jain;Siddhartha Pathak;Anilesh Kumar;Nan Li;N. Mara;J. Baldwin
• 通讯作者: J. Baldwin

Reduction Kinetics and Mass Transport of ZnO Single Entities on a Hg Ultramicroelectrode

汞超微电极上 ZnO 单一实体的还原动力学和传质

• DOI: 10.1002/celc.202000031
• 发表时间: 2020-05
• 期刊: ChemElectroChem
• 影响因子: 4
• 作者: Karunathilake, Nelum;Gutierrez‐Portocarrero, Salvador;Subedi, Pradeep;Alpuche‐Aviles, Mario A.
• 通讯作者: Alpuche‐Aviles, Mario A.

Evidence of Radical Intermediate Generated in the Electrochemical Oxidation of Iodide

碘化物电化学氧化过程中产生自由基中间体的证据

• DOI: 10.29356/jmcs.v63i3.529
• 发表时间: 2019-10
• 期刊: Journal of the Mexican Chemical Society
• 影响因子: 1.5
• 作者: Fernando, Ashantha;Parajuli, Suman;Barakoti, Krishna K.;Miao, Wujian;Alpuche Aviles, Mario A
• 通讯作者: Alpuche Aviles, Mario A