Higher order constitutive relations and interface conditions for metamaterials with strong spatial dispersion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F21%3A50018263" target="_blank" >RIV/62690094:18470/21:50018263 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0375960121004345?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0375960121004345?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physleta.2021.127570" target="_blank" >10.1016/j.physleta.2021.127570</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Higher order constitutive relations and interface conditions for metamaterials with strong spatial dispersion

Popis výsledku v původním jazyce

To characterize electromagnetic metamaterials at the level of an effective medium, nonlocal constitutive relations are required. In the most general sense, this is feasible using a response function that is convolved with the electric field to express the electric displacement field. Even though this is a neat concept, it bears little practical use. Therefore, frequently the response function is approximated using a polynomial function. While in the past explicit constitutive relations were derived that considered only some lowest order terms, we develop here a general framework that considers an arbitrary high number of terms. It constitutes, therefore, an approximation to the initially considered response function of arbitrary precision. The reason for the previously self-imposed restriction to only a few lowest order terms in the expansion has been the unavailability of the necessary interface conditions with which these nonlocal constitutive relations have to be equipped. Otherwise one could not make practical use of them. Therefore, besides the introduction of such higher order nonlocal constitutive relations, it is at the heart of contribution to derive the necessary interface conditions to pave the way for the practical use of these advanced material laws. (c) 2021 Elsevier B.V. All rights reserved. &lt;comment&gt;Superscript/Subscript Available&lt;/comment

Název v anglickém jazyce

Higher order constitutive relations and interface conditions for metamaterials with strong spatial dispersion

Popis výsledku anglicky

To characterize electromagnetic metamaterials at the level of an effective medium, nonlocal constitutive relations are required. In the most general sense, this is feasible using a response function that is convolved with the electric field to express the electric displacement field. Even though this is a neat concept, it bears little practical use. Therefore, frequently the response function is approximated using a polynomial function. While in the past explicit constitutive relations were derived that considered only some lowest order terms, we develop here a general framework that considers an arbitrary high number of terms. It constitutes, therefore, an approximation to the initially considered response function of arbitrary precision. The reason for the previously self-imposed restriction to only a few lowest order terms in the expansion has been the unavailability of the necessary interface conditions with which these nonlocal constitutive relations have to be equipped. Otherwise one could not make practical use of them. Therefore, besides the introduction of such higher order nonlocal constitutive relations, it is at the heart of contribution to derive the necessary interface conditions to pave the way for the practical use of these advanced material laws. (c) 2021 Elsevier B.V. All rights reserved. &lt;comment&gt;Superscript/Subscript Available&lt;/comment

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GA18-00496S" target="_blank" >GA18-00496S: Singulární prostory ze speciální holonomie a foliací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics letters A

ISSN

0375-9601

e-ISSN

—

Svazek periodika

412

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

"Article Number: 127570"

Kód UT WoS článku

000685194400004

EID výsledku v databázi Scopus

2-s2.0-85110701445