Acquisition of a Visible/Near-IR Raman System

该合同为特拉华大学材料科学、化学工程和化学系采购新的拉曼系统提供了部分支持。拉曼仪器利用高灵敏度电荷耦合器件（CCD）来检测从被研究材料散射的激光。为了能够研究从催化剂到聚合物的大量材料，输入的激光激发必须从可见光区变化到近红外区（532 -950）。nm)。因此，该拉曼系统将包括一个倍频二极管泵浦Nd:YAG激光器，该激光器将用于泵浦可调谐固态Ti：蓝宝石激光器，这将提供研究所有三个部门感兴趣的问题所需的大波长范围。该仪器将被研究人员用于先进材料设计和表征的许多不同领域。这些包括用于化学分离的高表面积材料，过渡金属氧阴离子催化剂，金属衬底上的有机自组装单层，微乳液，高温超导体，聚合物和离聚体。这个拉曼系统将成为材料研究的焦点，汇集了一个多学科的研究小组，他们有一个共同的目标——了解先进材料的结构/性质关系。特拉华大学材料科学系的这种仪器的存在将有助于促进校园内不同研究小组之间的互动和合作，但同样重要的是，它也将促进特拉华更全球化的材料社区的工业互动/合作。一些小公司已表示有兴趣探索在过程监测模式中使用拉曼光谱来表征材料，这种能力可以用光纤探针来完成。可以在该大学使用拟议的拉曼仪器进行有限的可行性研究。该仪器也将被用作材料表征课程的一部分，该课程是所有攻读材料科学高级学位的研究生所必需的。此外，它还将用于培养化学工程、物理和化学方面的学生，因为这些部门目前正在进行大量材料密集型工作。＊＊＊

9704127 Rabolt This award provides partial support for the acquisition of a new Raman system for the departments of Materials Science, Chemical Engineering and Chemistry at the University of Delaware. The Raman instrument utilizes a high sensitivity Charge Coupled Device (CCD) for detection of the laser light scattered from the materials under investigation. In order to be able to investigate a large collection of materials ranging from catalysts to polymers, the input laser excitation must be varied from the visible to the near infrared region (532.-950. nm.). Hence this Raman system will include a frequency-doubled diode pumped Nd:YAG laser which will be used to pump a tunable solid state Ti:Sapphire laser together which will provide the large range of wavelengths needed to study the problems of interest in all three departments. The proposed instrument will be used by researchers in a number of different areas of advanced materials design and characterization. These include high surface area materials used for chemical separations, transition metal oxygen-anion catalysts, organic self-assembled monolayers on metallic substrates, microemulsions, high temperature superconductors, polymers and ionomers. This Raman system will serve as a focal point for materials research, bringing together a multidisciplinary group of researchers who have a common goal-to understand the structure/property relationships in advanced materials. The presence of such an instrument in the Materials Science Department at the University of Delaware will serve to facilitate interaction and collaboration between the different research groups on campus but, just as importantly, it will also promote industrial interaction/collaboration in the more global materials community in Delaware. A number of small companies have expressed interest in exploring the use of Raman spectroscopy in the characterization of materials in a process-monitoring mode, a capability which could be acc omplished with fiber-optic probes. Limited feasibility studies could be conducted at the university with the proposed Raman instrument. This instrument will also be utilized as part of a larger course in materials characterization which is required for all graduate students pursuing an advanced degree in materials science. In addition it will be used to train students in chemical engineering, physics and chemistry because of the large amount of materials-intensive work that is currently being carried out in those departments. ***