| Summary: | 碩士 === 健行科技大學 === 電子工程系碩士班 === 104 === In this thesis, the filling media effects of surface plasmon resonance (SPR) modes for the periodic array of 9 nm Ag-shell nanobead with filling different dielectric media and their solid counterparts are numerically investigated and compared by means of finite element method with three-dimensional calculations. The investigated Ag-shell nanobead array is an important novel geometry for plasmonic metal nanoparticles (MNPs), combining the highly attractive nanoscale optical properties of both metallic nanoshell and cylindrical pore filled with a dielectric. Numerical results for SPR modes corresponding to the effects of different illumination wavelengths, transmission and absorption spectra, pore-dielectric, electric field components and total field distribution, charge density distribution, and the model of the induced local field or an applied field of the Ag-shell nanobead array are reported as well. It can be found that the proposed Ag-shell nanobead array with cylindrical pore filled with a dielectric in the Ag-shell nanobead exhibit tunable three SPR modes corresponding to the bonding and anti-bonding modes, that are not observed for their solid counterparts.
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