Development of a Fourier-Transform Infrared Microscopy Laboratory for Research in Earth and Materials Sciences

开发用于地球和材料科学研究的傅里叶变换红外显微镜实验室

• 批准号: 0948987
• 负责人: Jay Thomas
• 金额: $ 14.03万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-11-01 至 2011-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0948987&HistoricalAwards=false
• 关键词: Development; Fourier; Transform; Infrared; Microscopy

0948987ThomasThis award will fund a Fourier transform infrared (FTIR) spectrometer and an IR microscope for measuring volatiles in natural materials and in materials synthesized in known temperature and pressure regimes. The proposed acquisition will allow analyzing trace amounts of water in synthesized minerals and glasses created under controlled pressure and temperature conditions. Experimental systems will allow the investigators to vary pressure, temperature and chemical composition in order to assess water solubility in minerals and glasses. The FTIR system will allow direct water measurement in normally anhydrous components and will be be used to constrain mechanisms and refine models for natural materials. The measurements are fundamental to understanding effects on physical properties occurring when even small amounts of water become incorporated during mineral formation. Crystallographic siting and specific absorbing component spatial orientation within the crystal lattice will be assessed using the new FTIR system. Other analytical techniques (linear particle accelerator with H+ profiling, a Raman microprobe, and supercomputing facility) will help validate water concentrations and characterize mineral distribution. Measurements and modeling obtained in controlled experiments will ultimately be used to interpret and quantify FTIR spectra from natural materials. The instrument will be used to model processes which are difficult to understand without laboratory simulations (fluid flow, mantle convection, water-assisted deformation, melting, plutonism, volcanism, and ore deposition). The PIs have supported research projects for eight undergraduates over the past two years. Students present research at meetings and in research papers. Two graduate students will be directly supported in their research with this acquisition. The PI will assume overall responsibility for daily operation, maintenance, user scheduling, and training. Ample space is already available in recently-renovated laboratory. ***

该合同将资助傅立叶变换红外（FTIR）光谱仪和红外显微镜，用于测量天然材料和已知温度和压力下合成的材料中的挥发物。拟议的收购将允许分析在受控压力和温度条件下合成矿物和玻璃中的微量水。实验系统将允许研究人员改变压力、温度和化学成分，以评估水在矿物质和玻璃中的溶解度。FTIR系统将允许在通常无水的成分中直接测量水分，并将用于约束机制和完善天然材料的模型。这些测量对于理解在矿物形成过程中即使少量的水被掺入也会对物理性质产生的影响至关重要。晶体定位和特定的吸收成分的空间取向在晶格内将评估使用新的FTIR系统。其他分析技术（带H+谱的直线粒子加速器、拉曼微探针和超级计算设备）将有助于验证水浓度和表征矿物分布。在受控实验中获得的测量和建模最终将用于解释和量化来自天然材料的FTIR光谱。该仪器将用于模拟那些没有实验室模拟就难以理解的过程（流体流动、地幔对流、水辅助变形、熔融、深部作用、火山作用和矿床沉积）。在过去两年，这些计划资助了八名本科生的研究项目。学生在会议和研究论文中展示研究成果。此次收购将直接支持两名研究生的研究。PI将全面负责日常操作、维护、用户调度和培训。在最近翻修的实验室里已经有了充足的空间。* * *