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- W2967282992 abstract "Nonlocal material response distinctively changes the optical properties of nano-plasmonic scatterers and waveguides. It is described by the nonlocal hydrodynamic Drude model, which -- in frequency domain -- is given by a coupled system of equations for the electric field and an additional polarization current of the electron gas modeled analogous to a hydrodynamic flow. Recent works encountered difficulties in dealing with the grad-div operator appearing in the governing equation of the hydrodynamic current. Therefore, in these studies the model has been simplified with the curl-free hydrodynamic current approximation; but this causes spurious resonances. In this paper we present a rigorous weak formulation in the Sobolev spaces $H(mathrm{curl})$ for the electric field and $H(mathrm{div})$ for the hydrodynamic current, which directly leads to a consistent discretization based on Nedelec's finite element spaces. Comparisons with the Mie theory results agree well. We also demonstrate the capability of the method to handle any arbitrary shaped scatterer." @default.
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- W2967282992 date "2012-01-07" @default.
- W2967282992 modified "2023-09-27" @default.
- W2967282992 title "Numerical solution of nonlocal hydrodynamic Drude model for arbitrary shaped nano-plasmonic structures using finite elements method" @default.
- W2967282992 hasPublicationYear "2012" @default.
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