Plasmon coupling in the double-sector structure
A silver nanostructure consisting of double sectors is proposed in this paper. In addition, the plasmon resonance and electric field enhancement have been investigated theoretically. It is found that, in this structure, the multiple resonances produce, which is tunable by the parameter of the structure. The localized electromagnetic fields can be produced at the tips of the structure. In addition, the enhanced electromagnetic fields can be observed between the sectors in a wide scale at the lower energy peak. The result of the investigation has great significance for the production of practical nanostructures and the improvement of possible applications.
KeywordsPlasmon resonance Plasmon coupling Electric field enhancement
This work was supported by the National Science Foundation of China (No. 11304247), Natural Science Basis Research Plan in Shaanxi Province of China (No. 2016GY-029), Shaanxi Provincial Research Plan for Young Scientific and Technological New Stars (No. 2015KJXX-40), and The Natural Science Foundation of Shaanxi Educational Committee (Program No. 15JK1668).
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