Analysis of the use of the LCR circuit model for evaluating the resonant response of thin rectangular nanoantennas

We demonstrate the possibility of estimating in a simple way the expected frequency of the resonant response to an external electromagnetic field in a thin golden nanoantenna having a rectangular cross section. The paper considers nanoantennas with a thickness smaller than the thickness of the skin...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 49; no. 7; pp. 676 - 682
Main Authors Venediktov, V.Yu, Efremova, E.A., Krylov, I.R., Prokhorova, U.V.
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.07.2019
IOP Publishing
Subjects
Algorithms
ANTENNAS
broadband resonance
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Computer simulation
COMPUTERIZED SIMULATION
CROSS SECTIONS
ELECTROMAGNETIC FIELDS
Estimation
Exact solutions
LAYERS
LCR circuit model
Mathematical analysis
Nanoantennas
nanobar
resonant response
RLC circuits
Simulation
Thickness
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Summary:We demonstrate the possibility of estimating in a simple way the expected frequency of the resonant response to an external electromagnetic field in a thin golden nanoantenna having a rectangular cross section. The paper considers nanoantennas with a thickness smaller than the thickness of the skin layer or comparable with it. Analytical expressions for estimating the resonance response are presented, and full-wave simulation is performed. The algorithm for obtaining such estimates is important, in particular, for planning experiments without using full-wave simulation, which is often rather resource consuming. To obtain analytical expressions, a refined LCR circuit model is used. The analytical estimates obtained for the characteristics of the resonant response are in good agreement with the results of the full-wave simulation.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16867