Research Projects

Coupled Plasmonic Nanostructures (CPNSs) are a powerful system that improves light-matter interaction mechanisms in nanosized dimensions, such as hot-spot signals. Two CPNSs, Core satellite NSs and Nanoparticle-Film with Gap, show significant enhancements in the local electric field, making them important technologies in waveguide cavities, plasmonic amplifiers, plasmonic antennas, solar photo-catalysis, photo-detectors, and nonlinear devices. Ion irradiation is a powerful tool for synthesizing the required shape, orientation, and size of plasmonic nanostructures. The current proposal aims to use ion beam irradiation to fabricate coupled plasmonic nanostructures, utilizing Au core-satellites with depth or partially buried core-satellites to Au thin film through an ultra thin silicon oxide layer. The variation of local electric field of hotspots will be verified using numerical computational simulation based on the Finite difference time domain. The research will utilize partially buried core-satellites in the field of SERS using uracil molecules and Raman intensity of silica oxide. Characterization will be performed using UV Visible spectroscopy, Raman measurement, AFM, SEM, and Cross-sectional TEM with ELSS. The expertise of the PI and Co-PI in computation simulation will be well-fitted for the proposed research work.