Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiphysics Simulation of Plasmonic Photoconductive Devices using
  Discontinuous Galerkin Methods   Plasmonic nanostructures significantly improve the performance of
photoconductive devices (PCDs) in generating terahertz radiation. However, they
are geometrically intricate and result in complicated electromagnetic (EM)
field and carrier interactions under a bias voltage and upon excitation by an
optical EM wave. These lead to new challenges in simulations of plasmonic PCDs,
which cannot be addressed by existing numerical frameworks. In this work, a
multiphysics framework making use of discontinuous Galerkin (DG) methods is
developed to address these challenges. The operation of the PCD is analyzed in
stationary and transient states, which are described by coupled systems of the
Poisson and stationary drift-diffusion (DD) equations and the time-dependent
Maxwell and DD equations, respectively. Both systems are discretized using DG
schemes. The nonlinearity of the stationary system is accounted for using the
Gummel iterative method while the nonlinear coupling between the time-dependent
Maxwell and DD equations is tackled during time integration. The DG-based
discretization and the explicit time marching help in handling space and time
characteristic scales that are associated with different physical processes and
differ by several orders of magnitude. The accuracy and applicability of the
resulting multiphysics framework are demonstrated via simulations of
conventional and plasmonic PCDs.

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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
33
The categories of this paper are: plasm-ph