ANALYSIS OF SURFACE PLASMON WAVE OF METASURFACE SYSTEM CONSISTING OF NANOSPHERE ON SUBSTRATE

• Main Author: Ramdani, Deni
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/65799
• Institution: Institut Teknologi Bandung

A topic that is vital for developing optical sensors, optical integrated circuits, and optical communication is manipulating light. Light can be manipulated with optical nanotechnology. The challenges of optical nanotechnology are related to the fabrication of nanostructures and material selection. In this decade, high refractive index dielectric materials are considered to be able to substitute plasmonic materials. The dielectric material has the advantages of low power dissipation and the ability to excite magnetic moments in the visible light range. In this final project, a numerical experiment was carried out using FEM (Finite Element Method) simulation program to observe and analyze the optical response of metasurface consisting of metal and dielectric nano-spheres on a SiO2/Ag substrate. It was found that the system under study has the ability to confine the energy in the SiO2 layer due to the interaction between the surface plasmons on the substrate and the excited field on the nanospheres. For metal nanospheres, the excited fields are localized surface plasmon waves, whereas for dielectric nanospheres, the excited fields are electromagnetic multipole modes.