Raman spectroscopy and Z-scan based third order nonlinear study of graphene & plasmonic metal nanohybrids

In this thesis, Raman spectroscopy and Z-Scan based third order nonlinear study of single layer graphene, multilayer graphene and their hybridization with noble metals for near-infrared wavelengths was studied. Raman spectroscopy study was used in distinguishing the G, D and 2D band enhancement due to charge transfer effect from the surface plasmon effect in hybrid materials for the first time. Z-Scan was used to explore the effect of crystallinity on the nonlinear properties of hybrid materials. The study of these hybrid materials is useful in developing wide variety of scientific applications such as surface-enhance Raman spectroscopy based sensing, antennas, catalysis etc.