Acquisition of a Scanning Electron Microscope at Mount Holyoke College

0216182邓文迪主要研究仪器（MRI）补助金支持通过收购一个新的扫描电子显微镜（SEM）与低真空样品室和能量色散光谱仪的研究需要蒙特霍利奥克学院科学教师。新的环境SEM（JEOL JSM-5610）将取代现有的JEOL 35 CF SEM，该SEM使用17年，缺乏光束稳定性、图像质量和对水合或无涂层样品成像的能力。来自生物学，化学和地球科学等多个部门的教师都从事研究，这将充分利用最先进的环境扫描电镜。 需要对材料进行高分辨率结构和成分分析的具体研究包括海洋无脊椎动物的分类调查（轮虫、桡足类和枝角类）、乳胶包裹工业材料的研究、变质作用期间石墨-方解石碳同位素交换作为变质组合形成温度的代用指标的研究、富铁地幔相的成分测绘，以更好地了解地球深部化学动力学和氧化还原条件，以及农业工程作物的分类研究。 该设施还将扩大霍利奥克山著名的妇女教育方案的可用资源。***

0216182DunnThis Major Research Instrumentation (MRI) grant supports the research needs of Mount Holyoke College science faculty through acquisition of a new scanning electron microscope (SEM) with a low-vacuum sample chamber and energy-dispersive spectrometer. A new environmental SEM (JEOL JSM-5610) will supercede an existing JEOL 35 CF SEM that is 17 years old and lacks beam stability, image quality and the capability to image hydrated or uncoated samples. Faculty from multiple departments including biology, chemistry and the earth sciences are all engaged in research that will make excellent use of a state-of-the-art ESEM. Specific studies that require high resolution textural and compositional analysis of materials include, taxonomic investigations of marine invertebrates (Rotifera, Copepoda and Cladocera), studies of latex coated industrial materials, studies of graphite-calcite carbon isotopic exchange during metamorphism as a proxy of the temperature of formation of metamorphic assemblages, compositional mapping of Fe-rich mantle phases to better understand deep earth chemical dynamics and redox conditions, and taxonomic investigations of agriculturally-engineered crops. This facility will also expand the resources available to Mount Holyoke's renowned educational program for women. ***