MRI: Acquisition of a Field Emission Scanning Electron Microscope

获得重大研究仪器(MRI)项目的这一奖项后，Piotr Piotrowiak和来自纽瓦克罗格斯大学的同事Elena Galoppini、Frieder Jaekle、Hui鑫He和Evert Elzinga将获得一台带有能量分散X射线光谱仪(EDS)的场发射扫描电子显微镜(SEM)。该建议旨在加强各级的研究、研究培训和教育。该仪器将支持多个领域的研究，包括半导体纳米结构和杂化分子/纳米粒子系统中激子和电荷动力学的研究，控制重金属形态的矿物-水界面的地球化学过程的研究，旨在分子水平上了解界面电子传递的研究，通过合成“增感剂”染料，开发具有亚微米结构的有机硼化合物和功能聚合物的新的合成化学，以及基于纳米管-聚合物相互作用的混合传感器的开发。扫描电子显微镜(SEM)是表征材料的基本工具之一。电子束扫描样品的表面，产生样品组合物的显微图像。与使用光探测材料的显微镜相比，电子显微镜可以提供更高的分辨率和放大倍率。特征X射线是通过与样品中的原子相互作用而产生的，当分散时会提供有关元素组成(EDS)的信息。该仪器将为包括化学、地球科学和环境科学领域在内的许多领域的研究生和本科生提供显微镜培训和研究机会，为他们适应21世纪科学和技术劳动力的需求做好准备。

With this award from the Major Research Instrumentation (MRI) program, Piotr Piotrowiak and colleagues Elena Galoppini, Frieder Jaekle, Huixin He and Evert Elzinga from Rutgers University Newark will acquire a field emission scanning electron microscope (SEM) with energy dispersed X-ray spectrometer (EDS). The proposal is aimed at enhancing research, research training and education at all levels. The instrument will support research in a number of areas including studies of exciton and charge dynamics in semiconductor nanostructures and hybrid molecular/nanoparticle systems, investigation of geochemical processes at mineral-water interfaces that control the speciation of heavy metals, studies directed at a molecular-level understanding of interfacial electron transfer through the synthesis of 'sensitizer' dyes, the development of new synthetic chemistry of organoboron compounds and functional polymers with sub-micron structure, and the development of hybrid sensors based on nanotube-polymer interactions. A scanning electron microscope (SEM) is one of the basic tools available for the characterization of materials. A beam of electrons scans the surface of a sample resulting in a microimage of the sample composition. The electron microscope can provide higher resolution and magnification than a microscope using light to probe the material. Characteristic X-rays are produced from interaction with atoms in the sample that when dispersed provide information on the elemental composition (EDS). This instrumentation will provide microscopy training and research opportunities to graduate and undergraduate students across many fields including chemistry, earth sciences and environmental science fields preparing them for the demands of the 21st century workforce in science and technology.