MRI: Acquisition of Tip Enhanced Raman Spectroscopy System

MRI：获取尖端增强拉曼光谱系统

• 批准号: 1126301
• 负责人: Frank Bright
• 金额: $ 32.56万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1126301&HistoricalAwards=false
• 关键词: MRI; Acquisition; Tip; Enhanced; Raman

With this award from the Major Research Instrumentation (MRI) Program that is co-funded by Chemistry, Professor Frank Bright from SUNY Buffalo and colleagues Joseph Gardella, Athos Petrou, Esther Takeuchi and Sarbajit Banerjee will acquire a tip-enhanced Raman spectroscopy (TERS) system. The proposal is aimed at enhancing research training and education at all levels, especially in areas such as (a) nanocrystalline sensor platforms, (b) vanadium dioxide and metal vanadate (MxV2O5, where M = Na, K, Cu, Zn) nanowires, (c) biodegradable repair and delivery constructs, (d) magneto-polarons within single ZnMnTe quantum dots, (e) advanced energy storage materials, (f) nanodiamond-based separations, (g) nanoscopic heterogeneity within antifouling and fouling release film surfaces, (h) hydroxyapatite nucleation and growth, (i) organic nanotubes and periodic nanomaterials, (j) substrate-catalyzed monolayer photolithography and energy-conversion, (k) photo-crystallization within amorphous selenium, (l) development of terahertz technologies based on graphene heterostructures, and (m) flexible hybrid xerogel/Bragg grating platforms for wound sensing and restitution.Raman spectroscopy is a vibrational spectroscopy technique that serves as a powerful analytical tool to identify sample structures. However, the intensity of normal Raman spectroscopy is not very strong and thus ways to enhance the signal are essential. The tip-enhanced Raman spectroscopy (TERS) method is based on the combination of Raman spectroscopy, surface enhanced Raman scattering (SERS) and atomic force microscopy (AFM). The TERS effect uses a metal-coated AFM tip as an antenna that enhances the Raman signal coming from the sample area in contact with the tip. Because the AFM tip is on the nanometer scale, it is possible to obtain localized enhancement on the same scale. By differentiating the tip enhanced Raman from the normal Raman (tip away from the sample) it is possible to obtain Raman information from areas 100 nm in diameter. The requested TERS system will facilitate the characterization of thin films, nanostructures, and porous surfaces and will serve to train undergraduate and graduate students, as well as postdocs. It will also be used in outreach activities at the K-12 level.

有了这个由化学共同资助的主要研究仪器（MRI）计划的奖项，纽约州立大学布法罗的Frank Bright教授和同事Joseph Gardella，Athos Petrou，Esther Takeuchi和Sarbajit Banerjee将获得尖端增强拉曼光谱（TERS）系统。该提案旨在加强各级研究培训和教育，特别是在（a）纳米晶传感器平台、（B）二氧化钒和金属钒酸盐等领域（MxV 2 O 5，其中M = Na，K，Cu，Zn）纳米线，（c）可生物降解的修复和递送构造，（d）单个ZnMnTe量子点内的磁极化子，（e）先进的能量存储材料，（f）基于纳米金刚石的分离，（g）污垢和污垢释放膜表面内的纳米级不均匀性，（h）羟基磷灰石成核和生长，（i）有机纳米管和周期性纳米材料，（j）衬底催化的单层光刻和能量转换，（k）无定形硒内的光结晶，（l）开发基于石墨烯异质结构的太赫兹技术，以及（m）用于伤口感测和复原的柔性混合干凝胶/布拉格光栅平台。拉曼光谱学是一种振动光谱学技术，用作识别样品结构的强大分析工具。然而，普通拉曼光谱的强度不是很强，因此增强信号的方法是必不可少的。尖端增强拉曼光谱（TERS）方法是基于拉曼光谱、表面增强拉曼散射（Sers）和原子力显微镜（AFM）的组合。TERS效应使用金属涂覆的AFM针尖作为天线，其增强来自与针尖接触的样品区域的拉曼信号。由于原子力显微镜针尖是在纳米尺度上的，因此可以获得相同尺度上的局部增强。通过区分尖端增强的拉曼和正常的拉曼（尖端远离样品），可以从直径为100 nm的区域获得拉曼信息。所要求的TERS系统将促进薄膜，纳米结构和多孔表面的表征，并将用于培训本科生和研究生以及博士后。它还将用于K-12职等的外联活动。