Parallel FDTD modelling of nonlocality in plasmonics

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Baxter, J.; Lesina, A.C.; Ramunno, L.: Parallel FDTD modelling of nonlocality in plasmonics. In: IEEE Transactions on Antennas and Propagation 69 (2021), Nr. 7, S. 3982-3994. DOI:

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Sum total of downloads: 94

As nanofabrication techniques become more precise, with ever smaller feature sizes, the ability to model nonlocal effects in plasmonics becomes increasingly important. While nonlocal models based on hydrodynamics have been implemented using various computational electromagnetics techniques, the finite-difference time-domain (FDTD) version has remained elusive. Here we present a comprehensive FDTD implementation of nonlocal hydrodynamics, including for parallel computing. As a sub-nanometer step size is required to resolve nonlocal effects, a parallel implementation makes the computational cost of nonlocal FDTD more affordable. We first validate our algorithms for small spherical metallic particles, and find that nonlocality smears out staircasing artifacts at metal surfaces, increasing the accuracy over local models. We find this also for a larger nanostructure with sharp extrusions. The large size of this simulation, where nonlocal effects are clearly present, highlights the importance and impact of a parallel implementation in FDTD. CCBY
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2020
Appears in Collections:Fakultät für Maschinenbau

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pos. country downloads
total perc.
1 image of flag of Germany Germany 37 39.36%
2 image of flag of United States United States 25 26.60%
3 image of flag of China China 8 8.51%
4 image of flag of No geo information available No geo information available 3 3.19%
5 image of flag of Japan Japan 2 2.13%
6 image of flag of Israel Israel 2 2.13%
7 image of flag of Hungary Hungary 2 2.13%
8 image of flag of Greece Greece 2 2.13%
9 image of flag of Canada Canada 2 2.13%
10 image of flag of Denmark Denmark 1 1.06%
    other countries 10 10.64%

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