MRI: Acquisition of a Scanning Electron Microscope for Imaging and Elemental Analysis in Research at Duquesne University

MRI：杜肯大学购买扫描电子显微镜用于成像和元素分析研究

• 批准号: 0923183
• 负责人: Jennifer Aitken
• 金额: $ 31.09万
• 依托单位: Duquesne 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: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0923183&HistoricalAwards=false
• 关键词: MRI; Acquisition; Scanning; Electron; Microscope

With this award from the Major Research Instrumentation (MRI) program, the Department of Chemistry and Biochemistry at Duquesne University will acquire a Scanning Electron Microscope (SEM) equipped with energy dispersive spectroscopy (EDS) to support imaging, elemental analysis and elemental mapping. This instrumentation will enable significant advances in projects focused on materials science, nanotechnology, biology, energy and the environment. Examples of projects include: i.) The elemental composition and composition gradients in inorganic semiconductors at the nanoscale will be studied. This will be combined with data detailing bulk phase analysis to understand the resulting physical properties of the semiconductor and the fine-tuning thereof; ii.) The analysis of alloy oxide surfaces will be studied where elemental maps of the oxide surface via EDS will be combined with atomic force microscopy imaging information to understand why or when the reactivity of an organic moiety varies with surface content; iii.) Nanoscale elemental analysis (EDS) and morphology determination (SEM) will be used to optimize the efficiency of carbon-modified(CM)-n-TiO2 thin films for photoelectrochemical splitting of water to hydrogen by visible light. Scanning electron microscopy is a widely used technique for providing an image of a sample surface. The image is obtained from scanning the surface with a beam of electrons. Energy dispersive spectroscopy is combined with a SEM to provide elemental analysis i.e. chemical characterization of the sample. The SEM/EDS acquisition will be fully integrated into graduate and undergraduate research projects, as well as three regularly offered courses in chemistry, biology and forensic science, providing students with cutting-edge microscopy experience. Many of Duquesne's summer research students will have access to the instrumentation via a NSF-sponsored REU program, as will high school students through an outreach project to Sto-Rox High School. Faculty from Indiana University of PA, Slippery Rock University and St. Vincent College will also use the instrument.

通过大型研究工具（MRI）计划的奖项，杜肯大学化学和生物化学系将获得配备能量分散光谱学（EDS）的扫描电子显微镜（SEM），以支持成像，元素分析和元素映射。该仪器将使专注于材料科学，纳米技术，生物学，能源和环境的项目取得重大进展。 项目的示例包括：i。）将研究纳米级无机半导体中的元素组成和组成梯度。 这将与数据详细介绍大量相位分析相结合，以了解半导体及其微调的物理特性； ii。）将研究对合金氧化物表面的分析，其中将通过EDS与原子力显微镜成像信息结合使用氧化物表面的元素图，以了解为什么有机部分的反应性随表面含量而变化； iii。）纳米级元素分析（EDS）和形态测定（SEM）将用于优化碳修饰（CM）-N-TIO2薄膜的效率，用于通过可见光将水拆分至氢的光学化学分裂。扫描电子显微镜是一种用于提供样品表面图像的广泛使用的技术。 图像是通过用电子束扫描表面获得的。 能量分散光谱与SEM结合使用，以提供元素分析，即样品的化学表征。 SEM/EDS的收购将完全集成到研究生和本科研究项目中，以及三个定期提供化学，生物学和法医学的课程，为学生提供尖端的显微镜经验。 杜肯（Duquesne）的许多夏季研究生将通过NSF赞助的REU计划访问该乐器，通过向Sto-Rox高中的外展项目，高中生也可以访问该乐器。 宾夕法尼亚大学，滑石大学和圣文森特学院的教职员工也将使用该乐器。