MRI: Acquisition of Near-Field and UV Raman Instruments

有了重大研究仪器计划的这一奖项，德雷克塞尔大学将能够获得用于紫外线(UV)辐射源和扫描近场光学显微镜(SNOM)的新型拉曼仪器。这些系统极大地扩展了拉曼光谱的能力，允许解决使用传统仪器无法解决的新问题，并可以发现材料中的基本纳米级现象。使用紫外拉曼的一个例子是分析钻石、无定形碳、石墨、纳米管和富勒烯中的碳键。用紫外拉曼光谱可以研究非常薄的半导体表面层或有机分子的单分子层。近场拉曼光谱对于电子器件、界面、碳纳米管和其他亚微米级物体具有重要意义，与其他拉曼仪器相比，更好的空间分辨率可以产生巨大的影响。拉曼SNOM可能会使拉曼光谱学突破到纳米技术领域。新仪器将成为德雷克塞尔大学新的拉曼设备的组成部分。这将创造独特的拉曼仪器组合，支持新型碳纳米结构、半导体薄膜和器件、纳米层陶瓷、复合材料和生物材料等不同领域的材料研究和纳米技术计划。德雷克塞尔大学和宾夕法尼亚大学的研究生和本科生将使用光谱仪，当地公司的研究人员和高中生。%拥有德雷克塞尔大学主要研究仪器项目的这一奖项，将能够获得使用紫外线(UV)辐射源和扫描近场光学显微镜的显微光谱仪。这些系统极大地扩展了拉曼光谱的能力，并允许解决使用传统仪器无法解决的新问题，以及发现材料中的基本现象。使用紫外拉曼的一个例子是分析钻石、类金刚石碳膜和其他新型碳材料中的碳键。与可见光拉曼相比，紫外拉曼的另一个优点是背景随温度的增加更低，这允许对各种材料进行高温测量，更低的荧光和共振增强。用紫外拉曼光谱可以研究非常薄的半导体表面层或有机分子的单分子层。近场拉曼光谱对电子设备、界面、碳纳米管和其他亚微米物体具有重要意义，与其他拉曼仪器相比，更好的空间分辨率可以产生巨大的差异。新仪器将成为德雷克塞尔大学新的拉曼设施的组成部分。这将创造独特的拉曼仪器组合，支持新型碳纳米结构、半导体薄膜和器件、纳米层陶瓷、复合材料和生物材料等不同领域的材料研究和培训以及纳米技术项目。

With this award from the Major Research Instrumentation Program, Drexel University will be able to acquire new kinds of Raman instrumentation, for ultraviolet (UV) radiation sources and scanning near-field optical microscopes (SNOM). These systems dramatically expand capabilities of Raman spectroscopy and allow addressing new problems, that cannot be resolved using conventional instruments, and to discover fundamental nanoscale phenomena in materials. An example of use of UV Raman is analysis of carbon bonding in diamond, amorphous carbon, graphite, nanotubes and fullerenes. Very thin surface layers of semiconductors or monolayers of organic molecules can be studied using UV Raman spectroscopy. Near-field Raman spectroscopy is of principal importance for electronic devices, interfaces, carbon nanotubes and other submicrometer objects, where a better spatial resolution compared to other Raman instruments can make a great difference. Raman SNOM may allow a breakthrough of Raman spectroscopy into nanotechnology.The new instruments will be an integral component of a new Raman facility at Drexel University. This will create a unique combination of Raman instruments, which will support materials research and nanotechnology programs in such diverse areas as novel carbon nanostructures, semiconductor films and devices, nanolaminate ceramics, composites and biomaterials. Graduate and undergraduate students from Drexel University and University of Pennsylvania will use the spectrometers, researchers from local companies and high school students.%%%With this award from the Major Research Instrumentation program Drexel University will be able to acquire microspectrometers using ultraviolet (UV) radiation sources and scanning near-field optical microscopes. These systems dramatically expand capabilities of Raman spectroscopy and allow addressing new problems, that cannot be resolved using conventional instruments, and to discover fundamental phenomena in materials. An example of use of UV Raman is analysis of carbon bonding in diamond, diamond-like carbon films and other novel carbon materials. Another advantages of UV over visible Raman are a lower background increase with temperature, which allows for high temperature measurements on a variety of materials, lower fluorescence and resonance enhancement. Very thin surface layers of semiconductors or monolayers of organic molecules can be studied using UV Raman spectroscopy. Near-field Raman spectroscopy is of principal importance for electronic devices, interfaces, carbon nanotubes and other submicrometer objects, where a better spatial resolution compared to other Raman instruments can make a great difference.New instruments will be an integral component of a new Raman facility at Drexel University. This will create a unique combination of Raman instruments, which will support materials research and training and nanotechnology programs in such diverse areas as novel carbon nanostructures, semiconductor films and devices, nanolaminate ceramics, composites and biomaterials.