Acquisition of Electron Microscope Upgrade to Implement Environmental Capability for Materials Research and Education

最先进的(扫描)透射电子显微镜将升级为环境透射电子显微镜，允许在高达8Torr的压力和高达900摄氏度的温度下进行近原子分辨率成像。这些能力对拟议的纳米科学、生物技术和环境科学研究至关重要。近原子尺度的图案将由吸附在表面上的分子的电子束分解来定义。对气-液-固三相生长的硅纳米管的原位研究将有助于快速的工艺优化，允许在技术上相关的硅(100)表面上生长。利用基因工程成骨细胞合成的人工骨的特性将通过成像水合样品的能力而变得更容易。在高压和高温下进行成像将被用来发现可用于矿物固定温室气体的新材料。这些先进的表征能力将被完全整合到课堂学习体验中，并将显著增强产业外延，促进学术/产业知识的转移。%最先进的(扫描)透射电子显微镜将升级为环境透射电子显微镜，允许在高达8Torr的压力和高达900摄氏度的温度下对各种样品进行近原子分辨率成像。这些能力对于亚利桑那州立大学提出的战略重点领域的尖端研究至关重要，这些领域包括纳米科学与技术、生物技术和环境科学。具体地说，电子束刺激表面化学将用于书写近原子尺度的图案，实时成像将用于优化硅纳米管形成的工艺条件，组织工程化人工骨的表征，以及对温室气体的矿物固定的现场调查。该仪器的先进表征能力将通过其与Goldwater材料可视化设施的互联网连接完全整合到亚利桑那州立大学的课堂学习中。此外，这些能力将通过我们非常成功的行业协会计划促进学术/行业知识的转移。

A state-of-the art (scanning)transmission electron microscope (TEM)will be upgraded to an environmental TEM allowing near-atomic resolution imaging at pressures up to 8 Torr and temperatures up to 900 degree C. These capabilities are vital for proposed nanoscience, biotechnology and environmental science research. Near-atom-scale patterns will be defined by electron-beam decomposition of molecules adsorbed on surfaces. In situ investigation of vapor-liquid-solid grown Si nanopillars will facilitate rapid process optimization allowing growth on technologically relevant Si(100) surfaces. Characterization of artificial bone synthesized using genetically engineered osteoblasts will be facilitated by the capability for imaging hydrated specimens. Imaging at elevated pressure and temperature will be employed to discover novel materials useful for mineral sequestration of greenhouse gases. These advanced characterization capabilities will be fully integrated into the classroom learning experience and will significantly enhance industrial outreach facilitating academic/industrial knowledge transfer.%%% A state-of-the art (scanning)transmission electron microscope (TEM)will be upgraded to an environmental TEM allowing near-atomic resolution imaging of diverse samples at pressures of up to 8 Torr and temperatures of up to 900 degree C. These capabilities are vital for cutting edge research proposed in strategic thrust areas at ASU including nanoscience and technology, biotechnology and environmental science. Specifically, electron beam stimulated surface chemistry will be employed for writing near atomic scale patterns, real-time imaging will be used to optimize process conditions for Si nanopillar formation, characterization of tissue engineered artificial bone and in situ investigation of mineral sequestration of greenhouse gases. The advanced characterization capabilities of this instrument will be fully integrated into classroom learning at ASU through its internet connection to the Goldwater Materials Visualization Facility. Further, these capabilities will enhance academic/industrial knowledge transfer facilitated by our highly successful Industrial Associates program.