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.

凭借主要研究仪器（MRI）计划的这一奖项，迪克讷大学的化学和生物化学系将获得配备能量色散光谱（EDS）的扫描电子显微镜（SEM），以支持成像，元素分析和元素绘图。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。 项目的例子包括：i.）将研究纳米级无机半导体中的元素组成和组成梯度。 这将与详细描述体相分析的数据相结合，以了解半导体的所得物理性质及其微调; ii.）将研究合金氧化物表面的分析，其中通过EDS的氧化物表面的元素图将与原子力显微镜成像信息相结合，以了解有机部分的反应性为何或何时随表面含量而变化; iii.）纳米级元素分析（EDS）和形态测定（SEM）将用于优化碳改性（CM）-n-TiO 2薄膜的效率，用于通过可见光将水光电化学分解为氢。扫描电子显微镜是用于提供样品表面的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。 能量色散光谱与SEM相结合，提供元素分析，即样品的化学表征。 SEM/EDS收购将完全融入研究生和本科生研究项目，以及化学，生物学和法医学的三个定期课程，为学生提供尖端的显微镜经验。 迪克讷的许多暑期研究生将通过NSF赞助的REU项目获得仪器，高中生也将通过一个外展项目获得Sto Rox高中。 来自宾夕法尼亚州印第安纳州大学、斯利普洛克大学和圣文森特学院的教师也将使用这种仪器。