Synthesis of size-controlled plasmonic Au nanostructures and study on their remarkable SERS performance

Abstract

Raman spectroscopy is more used in various fields than fluorescence or IR spectroscopy. Because it is non-destructive method, and it is possible to obtain signals from various materials. Also, it has intrinsic signals about functional groups, and samples which are liquid states can be analyzed. However, intensity of Raman signals is weak. Plasmonic nanoparticles are used to enhance intensity of Raman signals and nanostructure is oriented to improve efficiency. This nanostructure has remarkable structural and surface enhanced Raman scattering stability. Also, the constituent particles of nanostructure can be controlled easily. Moreover, because of controlled number of constituent particles of nanostructure, it is possible to study about size effects of surface enhanced Raman scattering.