Early Career: Upgrade of Electron Microscopy Facility to Increase Geoscience Functionality at San Francisco State University

0949176 leech这笔赠款用于购买设备以升级旧金山州立大学的电子显微镜设施，并为一名研究技术人员提供三年的部分支持。需要购置的具体设备包括：1)溅射和碳涂层机；2)磨床和振动抛光机；3)薄切片系统；4)岩锯；5) SEM样品池清洗系统；6) asher腔和涡轮泵；7)蔡司SEM样品室气锁。样品制备设备将支持内部薄切片和样品制备，用于纹理和半定量元素分析，使用最新的NSF/MRI支持的场发射枪配备扫描电子显微镜（FE-SEM）。FE-SEM还配备了电子背散射衍射系统（EBSD），可以定量测定应变样品中的晶体学优选取向。EBSD需要在振动抛光机中使用胶体二氧化硅进行非常仔细的样品制备，以达到非常平整的样品表面。技术支持将确保该设施的日常监督，该机构已承诺在该合同到期后提供全职支持。升级后的FE-SEM设备将支持PI和学生的研究，这些研究需要微观空间结构和成分分析，包括喜马拉雅造山带中地壳变形机制的研究，变质相的地温压测量，用于传感器和介电技术的合成沸石矿物的研究，土壤矿物与各种重金属相互作用的研究，以及岩石可蚀性的实验研究。旧金山州立大学是一所位于市中心、以本科生为主的少数族裔大学。首席私家侦探玛丽·里奇是一名早期职业生涯未获终身教职的美国原住民教员。这些pi参加了旧金山州立大学的SF-ROCKS项目，该项目向城市少数民族青年伸出援助之手，并让他们参与大学水平的研究项目。＊＊＊

0949176 LeechThis grant supports acquisition of equipment to upgrade the electron microscopy facility at San Francisco State University and funding for partial support of a research technician for three years. Specific equipment to be acquired includes: 1) sputter and carbon coaters; 2) grinder and vibratory polishers; 3) a thin sectioning system; 4) rock saw; 5) SEM sample cell cleaning system; 6) asher chamber and turbo pump; and 7) Zeiss SEM sample cell airlock. Sample preparation equipment will support in-house thin sectioning and preparation of samples for textural and semi-quantitative elemental analysis using a recently NSF/MRI supported field emission gun equipped scanning electron microscope (FE-SEM). The FE-SEM is also outfitted with an electron backscattered diffraction system (EBSD) that allows for quantitative determination of crystallographic preferred orientation in strained samples. EBSD requires extremely careful sample preparation using colloidal silica in a vibratory polishers to achieve extremely level sample surfaces. Technical support will ensure daily oversight for the facility and the institution has committed to future full time support following expiration of this award. The upgraded FE-SEM facility will support PI and student research that requires micro spatial textural and compositional analysis including studies of mid-crustal deformation mechanisms in the Himalayan orogen, geothermobarometry of metamorphic phases, studies of synthetic zeolite minerals for applications to sensor and dielectric technologies, studies of soil mineral interactions with various species of heavy metals, and experimental investigations of rock erodability. SFSU is an inner-city, minority-serving, and predominantly undergraduate institution. The lead PI Mary Leech is an early career untenured, Native American faculty member. The PIs participate in the SF-ROCKS program at SFSU State that reaches out to minority urban youth and involves them in university-level research projects. ***