MRI: Acquisition of Transmission Electron Microscope Digital Camera

该奖项由主要研究仪器和化学研究仪器项目以及既定的激励竞争性研究计划(EPSCoR)支持。南达科他大学正在购买一台用于透射电子显微镜(TEM)的数码相机，以支持詹姆斯·霍费尔迈尔教授及其同事兰吉特·库达利、姜朝阳、格里戈里·塞里达和阿拉文·巴里德。一般来说，瞬变电磁波通过一层薄薄的材料发射一束电子束。电子束与物质相互作用，产生类似于显微镜的视觉图像。这些图像是由相机记录的，它们对于研究材料的化学性质很重要。这些图像揭示了结构的细节，如纳米颗粒或蛋白质的大小和形状。这些信息有助于研究人员了解材料的特性并改进它们。此次收购加强了本科生的研究培训。该仪器是该机构以及附近大学，如南达科他州立大学、内布拉斯加州印第安人社区学院(NICC，位于内华达州梅西和桑蒂的南苏市)和红云印第安人学校本科生和研究生教学和研究培训的组成部分。该奖项显著提高了大量使用的透射电子显微镜的能力，并赋予了它新的生命。该奖项旨在加强各级的研究和教育。它尤其影响用于表面增强拉曼散射和防伪应用的等离子体纳米材料的控制和表征的研究。该仪器还用于研究纳米多孔碳材料对水中污染物的光催化降解，以及研究用于防伪应用的稀土掺杂NaYF4(四氟化钠)上转换纳米晶。此外，它还为探索太阳能燃料催化、燃料电池和锂离子电池的使用提供了信息。该仪器还用于鉴定由功能化多层石墨烯微粒制备的抗菌涂层。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This award is supported by the Major Research Instrumentation and the Chemistry Research Instrumentation programs as well as the Established Program to Stimulate Competitive Research (EPSCoR). The University of South Dakota is acquiring a digital camera for a transmission electron microscope (TEM) to support Professor James Hoefelmeyer and colleagues Ranjit Koodali, Chaoyang Jiang, Grigoriy Sereda and Aravind Baride. In general, a TEM sends a beam of electrons through a thin layer of material. The electron beam interacts with the substance to produce a visual image, similar to a microscope. The images are recorded by a camera and they are important for research on the chemical properties of materials. The images reveal details of the structure, such as size and shape of a nanoparticle or a protein. This information helps researchers understand the material's properties and improve them. The acquisition enhances the training of undergraduates in research. This instrument is an integral part of teaching as well as research and research training of undergraduate and graduate students at this institution and nearby universities such as South Dakota State University, Nebraska Indian Community College (NICC, in South Sioux City, Macy and Santee, NE) and Red Cloud Indian School.The award significantly increases the capabilities and gives a new life to a heavily used transmission electron microscope. The award is aimed at enhancing research and education at all levels. It especially impacts studies controlling and characterizing plasmonic nanomaterials for surface enhanced Raman scattering and anti-counterfeiting applications. The instrumentation is also used for studying photocatalytic degradation of aqueous pollutants using nanoporous carbon materials and investigating lanthanide-doped NaYF4 (sodium ytrium tetrafluoride) upconversion nanocrystals for anti-counterfeiting applications. In addition, it provides information for exploring the use of solar fuels catalysis, fuel cells, and lithium ion batteries. The instrumentation is also used to identify antimicrobial coatings prepared by functionalized multilayered microparticles of graphene.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.