Rao Satish, Bálint Stefan, Løvhaugen Pål, Kreuzer Mark, Petrov Dmitri
ICFO - Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain.
Phys Rev Lett. 2009 Feb 27;102(8):087401. doi: 10.1103/PhysRevLett.102.087401. Epub 2009 Feb 23.
Surface enhanced Raman scattering (SERS) is studied from optically trapped dielectric spheres partially covered with silver colloids in a solution with SERS active molecules. The Raman scattering and Brownian motion of the sphere are simultaneously measured to reveal correlations between the enhancement of the Raman signal and average position of the sphere. The correlations are due to the momenta transfer of the emitted Raman photons from the probe molecules. The addition of a mechanical force measurement provides a different dimension to the study of Raman processes.
在含有表面增强拉曼散射（SERS）活性分子的溶液中，对部分覆盖有银胶体的光学捕获介电球体进行了表面增强拉曼散射（SERS）研究。同时测量球体的拉曼散射和布朗运动，以揭示拉曼信号增强与球体平均位置之间的相关性。这种相关性是由于探测分子发射的拉曼光子的动量转移所致。机械力测量的加入为拉曼过程的研究提供了一个不同的维度。
