Parallel FDTD modelling of nonlocality in plasmonics

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dc.identifier.uri Baxter, Joshua Lesina, Antonio Calà Ramunno, Lora 2021-03-31T06:01:24Z 2021-03-31T06:01:24Z 2020
dc.identifier.citation 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:
dc.description.abstract 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 eng
dc.language.iso eng
dc.publisher New York, NY : Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartofseries IEEE Transactions on Antennas and Propagation (2020)
dc.rights CC BY 4.0 Unported
dc.subject FDTD eng
dc.subject GNOR eng
dc.subject hydrodynamic plasma model eng
dc.subject nonlocality eng
dc.subject parallel computing eng
dc.subject plasmonics eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Parallel FDTD modelling of nonlocality in plasmonics
dc.type Article
dc.type Text
dc.relation.essn 1558-2221
dc.relation.issn 0018-926X
dc.bibliographicCitation.issue 7
dc.bibliographicCitation.volume 69
dc.bibliographicCitation.firstPage 3982
dc.bibliographicCitation.lastPage 3994
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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