Nonlocal Hydrodynamic Models for the Optical Response of Plasmonic Nanostructures

Authors

  • Mario Kupresak Department of Electrical Engineering (ESAT-TELEMIC) KU Leuven Leuven, Belgium
  • Xuezhi Zheng Department of Electrical Engineering (ESAT-TELEMIC) KU Leuven Leuven, Belgium
  • Guy A. E. Vandenbosch Department of Electrical Engineering (ESAT-TELEMIC) KU Leuven Leuven, Belgium
  • Victor V. Moshchalkov Institute for Nanoscale Physics and Chemistry (INPAC) KU Leuven Leuven, Belgium

Keywords:

additional boundary condition, deep-nanometer scale, nonlocal hydrodynamic model, plasmonics

Abstract

In order to model the interaction between light and plasmonic structures at deep-nanometer scale, which is governed by non-classical effects, a nonlocal hydrodynamic approach has been extensively studied. Several hydrodynamic models have been proposed, solving the coupled equations: the linearized hydrodynamic equation of motion and the electrodynamic Maxwell’s equations, by employing additional boundary conditions. This work compares four hydrodynamic models: the hard wall hydrodynamic model (HW-HDM), the curl-free hydrodynamic model (CF-HDM), the shear forces hydrodynamic model (SF-HDM), and the quantum hydrodynamic model (Q-HDM). The analysis is conducted for a metallic spherical nanoparticle, as an example. The above hydrodynamic models are also compared with experiments available in literature. It is demonstrated that HW-HDM and QHDM outperform the other two hydrodynamic models.

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References

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Published

2020-11-07

How to Cite

[1]
Mario Kupresak, Xuezhi Zheng, Guy A. E. Vandenbosch, and Victor V. Moshchalkov, “Nonlocal Hydrodynamic Models for the Optical Response of Plasmonic Nanostructures”, ACES Journal, vol. 35, no. 11, pp. 1388–1389, Nov. 2020.

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