Acquisition of a New Environmental Scanning Electron Microscope with Integrated Energy-Dispersive X-ray Analysis System

0132204 DanielFunds从这个赠款将支持国家的最先进的扫描电子显微镜（SEM）与环境细胞，允许在可变压力下的水合样品成像的收购。 所谓的环境SEM（ESEM）也将配置能量色散X射线光谱仪（EDS），以允许对样品进行定量成分分析。 在巴克内尔的环境扫描电镜设施将支持教师克里斯丹尼尔（变质岩石学/结构地质学），贝丝Capaldi（昆虫学），卡尔柯比（环境地球化学）和玛戈特Vigeant（化学工程）和他们的学生在这个文科机构的研究计划。 具体的研究重点包括基于变质相的SEM和EMP分析的美国西南部元古代构造历史的调查，以阐明其P-T历史和化学分区模式，细菌与暴露于酸性矿井排水的岩石中发现的固体铁相的相互作用的调查，研究医疗设备和工业管道上的生物膜，以及对活花粉-昆虫相互作用的结构研究，以阐明昆虫的感觉结构和机制。

0132204DanielFunds from this grant will support the acquisition of a state-of-the-art scanning electron microscope (SEM) with an environmental cell which allows for imaging of hydrated samples at variable pressures. The so-called environmental SEM (ESEM) will also be configured with an energy dispersive x-ray spectrometer (EDS) to allow for quantitative compositional analysis of samples. The ESEM facility at Bucknell will support the research programs of faculty members Chris Daniel (metamorphic petrology/structural geology), Beth Capaldi (entomology), Carl Kirby (environmental geochemistry) and Margot Vigeant (Chemical Engineering) and their students at this liberal arts institution. Specific research thrusts include investigations of the Proterozoic tectonic history of the southwestern U.S. based on SEM and EMP analyses of metamorphic phases to elucidate their P-T history and patterns of chemical zoning, investigations of bacterial interactions with solid iron phases found in rocks exposed to acid mine drainage, studies of biofilms on medical devices and industrial piping and structural studies of live pollen-insect interactions to elucidate insect sensory structures and mechanisms.***