Abstract
The localized surface plasmon resonances of silver nanoparticles are explored by applying numerical full-wave electrodynamic simulations. In this work the plasmonic response of spherical, cubic and cylindrical rod-shaped silver nanoparticles, and shapes varying continuously between them are presented. The electrodynamic characterization is done by their extinction, albedo, and the corresponding resonant surface field distributions. Several shape effects on the plasmonic resonances are elucidated, enabling the proper adjustment of their response for application-oriented purposes.
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Acknowledgments
The authors would like to thank Dr. Seppo Järvenpää for his technical help. This project is funded by the Aalto ELEC Doctoral School funding and the Aalto Energy Efficiency Research Program (EXPECTS project). T.A-N. has been supported in part by the Academy of Finland through its COMP CoE Grant 251748.
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Tzarouchis, D.C., Ylä-Oijala, P., Ala-Nissila, T. et al. Shape effects on surface plasmons in spherical, cubic, and rod-shaped silver nanoparticles. Appl. Phys. A 122, 298 (2016). https://doi.org/10.1007/s00339-016-9851-y
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DOI: https://doi.org/10.1007/s00339-016-9851-y