Elastic Topological Insulator via the Valley Hall Effect with Distorted Hexagonal Holes변형된 육각 구멍을 갖고 있는 밸리 홀 효과에 의한 탄성파 위상절연체

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dc.contributor.authorLee, Myung Joonko
dc.contributor.authorOh, Il Kwonko
dc.date.accessioned2021-06-14T06:50:44Z-
dc.date.available2021-06-14T06:50:44Z-
dc.date.created2021-06-14-
dc.date.created2021-06-14-
dc.date.created2021-06-14-
dc.date.created2021-06-14-
dc.date.issued2021-04-
dc.identifier.citationTRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A, v.45, no.4, pp.311 - 318-
dc.identifier.issn1226-4873-
dc.identifier.urihttp://hdl.handle.net/10203/285860-
dc.description.abstractTopological insulators have been studied extensively owing to its distinguished characteristics, which generates the edge state in which wave can propagate without backscattering. This work proposes a phononic crystal with distorted hexagonal holes, as an elastic topological insulator for in-plane wave based on the analogues of valley hall effect. First, the existence of a nontrivial valley topological phase on the phononic crystal is revealed by Bloch wave functions, Bloch frequencies at the valley, and numerically calculated valley Chem numbers, respectively. Then, a topologically protected edge state is generated on the boundary of two phononic crystals with different topological phases. Its topological protection property is confirmed on the band diagram by a supercell method utilizing the revealed valley topological phases. Finally, the nature of the edge state, which is topologically protected against sharp angles, is observed directly through a full field simulation.-
dc.languageKorean-
dc.publisherKOREAN SOC MECHANICAL ENGINEERS-
dc.titleElastic Topological Insulator via the Valley Hall Effect with Distorted Hexagonal Holes-
dc.title.alternative변형된 육각 구멍을 갖고 있는 밸리 홀 효과에 의한 탄성파 위상절연체-
dc.typeArticle-
dc.identifier.scopusid2-s2.0-85108661892-
dc.type.rimsART-
dc.citation.volume45-
dc.citation.issue4-
dc.citation.beginningpage311-
dc.citation.endingpage318-
dc.citation.publicationnameTRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A-
dc.identifier.doi10.3795/KSME-A.2021.45.4.311-
dc.identifier.kciidART002698784-
dc.contributor.localauthorOh, Il Kwon-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorElastic Wave-
dc.subject.keywordAuthorTopological Insulator-
dc.subject.keywordAuthorWaveguide-
dc.subject.keywordAuthorPhononic Crystal-
dc.subject.keywordAuthorValley Hall Effect-
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ME-Journal Papers(저널논문)
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