IMR: Acquisition of a Sum Frequency Generation (SFG) Spectrometer for Surface Spectroscopic Research and Student Training

材料研究仪器计划(IMR)的这笔奖金将用于购买犹他州大学最先进的和频率产生(SFG)光谱仪。SFG是唯一真正特定于界面的振动光谱技术。SFG上的对称性约束禁止整体上的非线性相互作用，而在界面上，由于对称性的局部破缺，这样的过程是允许的。因此，可以选择性地探测驻留在界面区域的分子的光谱，而不需要存在于更普遍的体相中的分子的任何贡献。对SFG光谱的分析可以获得纳米级深度分辨率的界面物种的布居、结构和取向信息。来自材料科学、冶金工程、化学、生物工程和聚合物科学等多个学科的研究人员将使用这种设备进行高级研究和教育。这项研究将研究聚合物纳米复合材料和自组装聚合物和表面活性剂材料中的界面，以及探索表面受限蛋白质物种的构象和取向。对不同技术重要界面的吸附现象和界面水结构的研究将是一项重要的新贡献。这些研究将对纳米技术、表面化学、生物和医学等领域产生深远的影响，并将促进我们对界面现象的理解，从而使新的技术应用成为可能。这项研究可能导致发现新的界面结构，以及更深入地理解和解释固/液、固/气和液/气界面上的新效应。来自不同系的许多研究生将与SFG光谱仪合作，并在激光表面和非线性光谱学的高级领域接受重要的培训。%材料研究仪器计划(IMR)的奖金将用于购买犹他大学最先进的和频率产生(SFG)光谱仪。SFG是唯一真正特定于界面的振动光谱技术。来自材料科学、冶金工程、化学、生物工程和聚合物科学等多个学科的研究人员将使用这种设备进行高级研究和教育。这项研究将研究聚合物纳米复合材料和自组装聚合物和表面活性剂材料中的界面，以及探索表面受限蛋白质物种的构象和取向。对不同技术重要界面的吸附现象和界面水结构的研究将是一项重要的新贡献。这些研究将对纳米技术、表面化学、生物和医学等领域产生深远的影响，并将促进我们对界面现象的理解，从而使新的技术应用成为可能。这项研究可能导致发现新的界面结构，以及更深入地理解和解释固/液、固/气和液/气界面上的新效应。来自不同系的许多研究生将与SFG光谱仪合作，并在激光表面和非线性光谱学的高级领域接受重要的培训。

The award from the Instrumentation for Materials Research program (IMR) will be used to acquire a state-of-the-art Sum Frequency Generation (SFG) spectrometer at the University of Utah. SFG is the only truly interface-specific vibrational spectroscopic technique. The symmetry constraints on SFG prohibit nonlinear interactions in the bulk, while at an interface, such processes are allowed due to the local break in symmetry. As a result, the spectroscopy of molecules residing in the interfacial region can be probed selectively without any contributions from the molecules present in the more pervasive bulk phases. Analysis of SFG spectra can yield information on population, structure, and orientation of interfacial species with a nanometer in-depth resolution. Researchers from a variety of disciplines such as materials science, metallurgical engineering, chemistry, bioengineering, and polymer science, will use this equipment for advanced research and education. The research will study interfaces in polymer nanocomposites and self-assembling polymer and surfactant materials, as well as, probe the conformation and orientation of surface confined protein species. The investigation of adsorption phenomena and interfacial water structure at different technologically important interfaces will be an important new contribution. The studies will have far-reaching implications in many fields of nanotechnology, surface chemistry, biology and medicine and will advance our understanding of interfacial phenomena thus enabling new technological applications. The research is likely to result in the discovery of new interfacial structures, as well as, in deeper understanding and explanation of novel effects at solid/liquid, solid/gas and liquid/gas interfaces. A number of graduate students from different departments will work with the SFG spectrometer and receive important training in the advanced fields of laser surface and nonlinear spectroscopy. %%%The award from the Instrumentation for Materials Research program (IMR) will be used to acquire a state-of-the-art Sum Frequency Generation (SFG) spectrometer at the University of Utah. SFG is the only truly interface-specific vibrational spectroscopic technique.. Researchers from a variety of disciplines such as materials science, metallurgical engineering, chemistry, bioengineering, and polymer science, will use this equipment for advanced research and education. The research will study interfaces in polymer nanocomposites and self-assembling polymer and surfactant materials, as well as, probe the conformation and orientation of surface confined protein species. The investigation of adsorption phenomena and interfacial water structure at different technologically important interfaces will be an important new contribution. The studies will have far-reaching implications in many fields of nanotechnology, surface chemistry, biology and medicine and will advance our understanding of interfacial phenomena thus enabling new technological applications. The research is likely to result in the discovery of new interfacial structures, as well as, in deeper understanding and explanation of novel effects at solid/liquid, solid/gas and liquid/gas interfaces. A number of graduate students from different departments will work with the SFG spectrometer and receive important training in the advanced fields of laser surface and nonlinear spectroscopy.