Abstract
Scattering field interactions and surface plasmon resonance (SPR) in coupled silver nanospheres are simulated by using the finite-element method, which includes the influences of near-field enhancements of electric field by the particle sizes, separation distances, propagation directions, as well as the polarizations of the incident wave. The proposed structures exhibit a red- and blue-shifted that can be tuned by varying the particle sizes and the separation distances, respectively. Implications for surface-enhance Raman scattering and nano-optics are discussed in three-dimensional models. The evolution of SPR and nano-photonic device with the structural variations can be designed in a controlled manner.
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Acknowledgements
The authors are thankful for the financial support from the National Science Council, Taiwan, ROC, under Grant number NSC 96-2112-M-231-001-MY3 and NSC 97-2120-M-002-013. They would also like to thank the National Center for High-Performance Computing for support by providing computing facility and software.
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Chen, M.W., Chau, YF. & Tsai, D.P. Three-Dimensional Analysis of Scattering Field Interactions and Surface Plasmon Resonance in Coupled Silver Nanospheres. Plasmonics 3, 157–164 (2008). https://doi.org/10.1007/s11468-008-9069-8
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DOI: https://doi.org/10.1007/s11468-008-9069-8