Abstract:Highly Surface-enhanced Raman Scattering (SERS) active Ag dimer array was prepared to investigate the orientation of molecules in an anisotropic electromagnetic field. The system allow us to observe very clear time-dependent change in the SERS spectra of 4,4'-bipyridine adsorbed in water. The SERS spectra showed several characteristic features especially in the change of relative intensity of the bands. The characteristics were compared with those of the calculated Raman spectra with distinct irradiation polar… Show more
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