Molecular Plasmonics: Single Nanoparticle Assemblies, Single Molecules, and Ultrafast Stimulated Raman Spectroscopy

该奖项由化学系化学测量与成像项目资助，西北大学Richard van Duyne教授及其博士后、研究生和本科生研究人员将继续研究表面增强拉曼光谱（SERS）。Van Duyne教授和他的研究小组将致力于：(1)开发单分子SERS （SMSERS）并将其应用于电化学测量；(2)进行表面增强飞秒受激拉曼光谱的基础研究。Van Duyne教授将继续他在教育领域的广泛活动。当分子种类被吸附到具有高曲率的金属表面时，拉曼散射有很大的增强。Van Duyne教授和其他科学家有兴趣了解这种增强的机制，并将其用作提高低浓度化学物质检测的手段。等离子体传感器已经被开发用于医学诊断和化学战剂的检测。这类工作的目标是建造更灵敏的化学探测器。参与该项目的学生将在开发尖端分析光谱工具方面获得有用的经验，并对SERS效应背后的化学和物理有深入的了解。作为这项工作的一部分，Van Duyne教授将继续他在教育方面的广泛努力，他将继续努力鼓励来自代表性不足群体的学生从事科学事业。

In this award, funded by the Chemical Measurement and Imaging Program of the Division of Chemistry, Professor Richard van Duyne of Northwestern University and his postdoctoral, graduate and undergraduate student researchers will be supported to continue their investigations of surface-enhanced Raman spectroscopy (SERS). Prof. Van Duyne and his research group will work on: (1) developing single-molecule SERS (SMSERS) and applying it to electrochemical measurements and (2) conducting fundamental studies of surface-enhanced femtosecond stimulated Raman spectroscopy. Professor Van Duyne will continue his wide-ranging activities in education.When a molecular species is adsorbed to a metal surface with high curvature, there is a large enhancement of the Raman scattering. Prof. Van Duyne and other scientists are interested in understanding the mechanism for this enhancements and using it as a means of improving the detection of chemical species in low concentration. Already, plasmonic sensors have been developed for medical diagnostics and the detection of chemical warfare agents. The goal of work like this is to build more sensitive chemical detectors. The students working on this project will gain useful experience in developing cutting-edge analytical spectroscopy tools as well as developing a firm understanding of the chemistry and physics behind the SERS effect. As part of this work, Prof. Van Duyne will continue his broad-ranging efforts in education, and he will continue in his efforts at encouraging students from underrepresented groups to pursue careers in the sciences.