MRI: Acquisition of a Field Emission Transmission Electron Microscope to Enable Multidisciplinary Materials Research, Education and Outreach, in Detroit

这项重大研究仪器（MRI）奖支持韦恩州立大学（WSU）收购高分辨率电子显微镜，能够在纳米尺度上进行化学和结构映射，以推进由23个不同的研究人员在能量转换/存储，催化，微电子/传感和生物医学科学领域进行的研究。技术进步源于仪器提供与局部结构相关的亚纳米成像和化学分辨率的能力。此外，自动设置和漂移校正提供的易用性使即使是新手用户也能快速收集高质量数据（高通量）。MRI奖有助于WSU多元化学生团体的成功，并通过对学生进行现代显微镜培训和为该市服务不足的K-12学生（80%非裔美国人）提供实践教育活动来增强底特律城市社区。电子显微镜由Lumigen Instrument Center核心设施管理，配备专门的显微镜工作人员，在六个区域学术机构开展研究活动和培训学生（其中五所主要是本科院校），同时推动初创公司和老牌公司的产品和技术开发。该MRI奖支持购买场发射扫描透射电子显微镜（S/使用多个能量色散光谱仪（EDS）和高角度环形暗场检测器（High Angle Annular Dark Field Detector）对样品进行透射电子显微镜（TEM）检测。S/TEM提供：1）快速和精确的EDS化学成分绘图和线扫描，光斑尺寸低至0.3 nm，并能够检测痕量元素组分（0.1重量%）; 2)用于化学分布分析的0.16 nm分辨率的Z对比度成像能力; 3）用于快速数据采集的大视场高速相机; 4）用于局部（单颗粒）结构评估的纳米束衍射; 5）用于高分辨率成像的样品漂移校正;以及6）用于非现场用户的远程数据采集。S/TEM支持以下研究活动：（1）开发用于高效磁制冷的掺杂纳米材料;（2）建立新的高能量密度锂离子电池技术;（3）设计用于选择性生物质转化和水分解的电催化剂（4）用于生物光子学/成像的上转换纳米颗粒的制造;（5）建立用于环境分析的高灵敏度化学传感平台，和（5）原子层沉积（ALD）该奖项反映了NSF的法定使命，并通过使用基金会的学术价值和更广泛的影响审查标准。

This Major Research Instrumentation (MRI) award supports the acquisition of a high-resolution electron microscope at Wayne State University (WSU) capable of chemical and structural mapping on the nanoscale to advance research being performed by 23 different investigators in the fields of energy conversion/storage, catalysis, microelectronics/sensing, and biomedical sciences. Technological advances arise from the capability of the instrument to provide sub-nanometer imaging and chemical resolution correlated to localized structure. Additionally, the ease-of-use afforded by automated settings and drift correction enables rapid collection of high-quality data (high throughput), even by novice users. The MRI award contributes to the success of WSU’s diverse student body and enhances the urban Detroit community through training of students in modern microscopy and the provision of hands-on educational activities for underserved K-12 students in the city (80% African American). The electron microscope is managed by the Lumigen Instrument Center core facility with a dedicated microscopist on-staff, enabling research activities and the training of students at six regional academic institutions (five of which are primarily undergraduate institutions) while advancing product and technology development at both start-up and established companies.This MRI Award supports the acquisition of a Field-Emission Scanning Transmission Electron Microscope (S/TEM) with multiple energy dispersive spectrometers (EDS) and a High Angle Annular Dark Field detector. The S/TEM provides: 1) fast and precise EDS chemical composition mapping and line scanning with spot sizes as low as 0.3 nm and the capability to detect trace elemental components (0.1 wt.%); 2) Z-contrast imaging capabilities at 0.16 nm resolution for chemical distribution analysis; 3) a large-field, high-speed camera for fast data acquisition; 4) nanobeam diffraction for localized (single particle) structure evaluation; 5) sample drift correction for high-resolution imaging; and 6) remote data acquisition for off-site users. The S/TEM supports research activities focused on (1) the development of doped nanomaterials for high-efficiency magnetic refrigeration; (2) establishment of new high energy-density Li-ion battery technologies; (3) design of electrocatalysts for selective biomass conversion and water splitting (hydrogen generation); (4) fabrication of up-converting nanoparticles for biophotonics/imaging; (5) creation of high-sensitivity chemical sensing platforms for environmental analysis, and (5) Atomic Layer Deposition (ALD) of electropositive metal films for microelectronics.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.