SERS STUDIES OF CARBON NANOTUBES ON SILVER SUBSTRATE

Abstract: According to the remarkable mechanical property, carbon nanotubes (CNTs) were grinded on a sheet of silver directly. Thus rough silver surface was obtained, at the same time, the CNTs attached to the rough silver surface. High quality Surface-enhanced Raman Scattering (SERS) spectra were obtained from CNTs attached to the rough silver surface. At the present time, in the works on SERS of CNTs[1-6], CNTs were always ultra sonicated in solvent firstly, and then added into metallic colloidal clusters or dropped on rough metallic surface for forming the SERS system. And many results have been observed. It is well known that the solvent is an important factor which impacts the SERS of CNTs. The dependability of the result is reduced when the solvent was induced into the SERS system. If there is no solvent in the SERS system, the dependable of the results can increase greatly. In order to set up a SERS system without solvent, we grinded CNTs on silver foil directly according to the particular structure and remarkable mechanical property of CNTs. Thus a no solvent SERS system was obtained. The theory and experiment results indicate that this method is exactitude and practicable. The Raman (a) and SERS (b) spectra of SWCNTs are presented in fig.1. As shown in fig.1 th