Acquisition of a Versatile Scanning Electron Microscope

购买多功能扫描电子显微镜

• 批准号: 0447332
• 负责人: Laurel Goodwin
• 金额: $ 26万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-12-15 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0447332&HistoricalAwards=false
• 关键词: Acquisition; Versatile; Scanning; Electron; Microscope

EAR-0447332GoodwinThe Department of Geology and Geophysics at the University of Wisconsin - Madison will purchase an exceptionally versatile scanning electron microscope (SEM), equipped with a range of detectors to be used in a variety of research and educational activities within the department and affiliated Geology Museum. The instrument will have the ability to produce high contrast cathodoluminescence and high resolution back-scattered electron images of variations in chemistry of materials such as zircons, inclusions in diamonds, and Mars meteorites, which are very rare; three-dimensional secondary electron images of features such as fossils, which will be aided by low vacuum; electron back-scattered detector (EBSD) analysis of the 3D orientation of solid phases; and qualitative chemical analyses using energy dispersive spectroscopy. The SEM lab will provide teaching and training for graduate and advanced undergraduate students, who require long-term experience to develop the abilities needed for professional use. This training will include both formal class work and research activities. This equipment will be utilized in an existing, NSF-funded education and outreach program by our Geology Museum, targeted toward high-school students and teachers. In our experience, students of all ages respond very positively to the intriguing images that can be obtained with this state-of-the-art equipment; this type of response is often critical to maintaining the interest of younger students, including women and underrepresented minorities, in science. Ongoing research that will benefit from this facility addresses many areas of interest to the public, including water quality and resources, the geologic record of earthquakes, approaches to removing carbon from the atmosphere (carbon sequestration), the geologic record of climate change, volcanic hazards, and materials applications of mineralogy. The acquisition of this equipment will allow the development of innovative applications of relatively new technology, such as EBSD. Many applications of EBSD have direct applicability and utility to different elements of the EarthScope initiative, NSF's multifaceted study of the geologic evolution and active tectonics of the United States. In addition, these state-of-the-art imaging capabilities will be critical for sample selection and for guiding in situ stable isotope analysis by WISC-SIMS, the Wisconsin Secondary Ion Mass Spectrometer Facility, which installed a new CAMECA ims-1280 Ion Microprobe in March 2005. This lab will explore new applications of stable isotope chemistry - a record of fluid-material interactions - in Earth, Materials, and Biological Sciences. We expect it to revolutionize our understanding of these processes.

Goodwin威斯康星州-麦迪逊大学的地质与地球物理系将购买一台功能非常多的扫描电子显微镜（SEM），该显微镜配备了一系列探测器，可用于系内和附属地质博物馆的各种研究和教育活动。该仪器将有能力产生高对比度阴极射线发光和高分辨率背散射电子图像，显示非常罕见的锆石、钻石内含物和火星陨石等材料的化学变化;在低真空的辅助下，产生化石等特征的三维二次电子图像;电子背散射探测器分析固体相的三维方位;和使用能量色散光谱的定性化学分析。SEM实验室将为研究生和高年级本科生提供教学和培训，他们需要长期经验来培养专业使用所需的能力。这种培训将包括正式的课堂工作和研究活动。这些设备将用于现有的，NSF资助的教育和推广计划，由我们的地质博物馆，针对高中学生和教师。 根据我们的经验，所有年龄段的学生都对使用这种最先进的设备获得的有趣图像做出了非常积极的反应;这种类型的反应通常对于保持年轻学生，包括女性和代表性不足的少数民族，对科学的兴趣至关重要。正在进行的研究将受益于这个设施，涉及公众感兴趣的许多领域，包括水质和资源，地震的地质记录，从大气中去除碳的方法（碳封存），气候变化的地质记录，火山灾害和矿物学的材料应用。购置这一设备将有助于开发EBSD等相对较新的技术的创新应用。EBSD的许多应用程序有直接的适用性和效用的不同元素的EarthScope倡议，美国国家科学基金会的地质演化和活动构造的多方面的研究。此外，这些最先进的成像能力对于样品选择和指导威斯康星州二次离子质谱仪设施WISC-SIMS进行原位稳定同位素分析至关重要，该设施于2005年3月安装了新的CAMECA ims-1280离子微探针。该实验室将探索稳定同位素化学（流体与材料相互作用的记录）在地球、材料和生物科学中的新应用。我们希望它能彻底改变我们对这些过程的理解。