Abstract
The optical response of various geometrical metallic nanoshell with silica are investigated by CST Microwave Studio® simulation. Farfield optical properties such as extinction cross section and enhancement of electric field on different geometrical surface are presented. The positions of plasmon absorptions near shorter and longer wavelength are also altered as changing the dimension parameters. Distorted irregular shapes NPs enormously enhance electric field as compared to regular NPs. Some particular simulation result is also compared to previously published work done by the method of Finite Difference Time Domain (FDTD) and Mie Theory. Assembles of NPs with different geometry size and shape are helpful in modeling multiple detected nano-antenna within optical frequency range.
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