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Subwavelength acoustic valley-hall topological insulators using soda cans honeycomb lattices

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Física del Estado Sólidoes
dc.contributor.authorZhang, Zhiwang
dc.contributor.authorGu, Ye
dc.contributor.authorLong, Houyou
dc.contributor.authorCheng, Ying
dc.contributor.authorLiu, Xiaojun
dc.contributor.authorChristensen, Johan
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2020-12-15T09:43:28Z
dc.date.available2020-12-15T09:43:28Z
dc.date.issued2019-08-08
dc.description.abstractTopological valley-contrasting physics has attracted great attention in exploring the use of the valley degree of freedom as apromising carrier of information. Recently, this concept has been extended to acoustic systems to obtain nonbackscattering soundpropagations. However, previous demonstrations are limited by the cut-of frequency of 2D waveguides and lattice-scale sizerestrictions since the topological edge states originate from Bragg interference. Here we engineer topologically valley-projected edgestates in the form of spoof surface acoustic waves that confne along the surface of a subwavelength honeycomb lattice composedof 330-mL soda cans. Te inversion symmetry is broken through injecting a certain amount of water into one of the two cansin each unit cell, which gaps the Dirac cone and ultimately leads to the topological valley-Hall phase transition. Dual-frequencyranges of the valley-projected edge states below the sound line are observed, which originate from the frst-order and second-orderresonances, respectively. Tese results have the potential to enable promising routes to design integrated acoustic devices based onvalley-contrasting physics.en
dc.description.sponsorshipThis work was supported by National Key R&D Program of China (2017YFA0303702), NSFC (11834008, 11874215, 11674172, and 11574148), Jiangsu Provincial NSF (BK20160018), the Fundamental Research Funds for the Central Universities (020414380001), and Nanjing University Innovation and Creative Program for PhD candidate (CXCY17-11). Zhiwang Zhang acknowledges the support from the China Scholarship Council. Johan Christensen acknowledges the support from the European Research Council (ERC) through the Starting Grant 714577 PHONOMETA and from the MINECO through a Ramón y Cajal grant (Grant no. RYC-2015-17156).en
dc.description.statusPublicadoes
dc.format.extent8
dc.identifier.bibliographicCitationAAAS Research, Volume, (2019), Article ID 5385763, pp.: [8].en
dc.identifier.doihttps://doi.org/10.34133/2019/5385763
dc.identifier.issn2096-5168
dc.identifier.publicationfirstpage1
dc.identifier.publicationlastpage8
dc.identifier.publicationtitleResearch: a science parner journalen
dc.identifier.publicationvolume2019, 5385763
dc.identifier.urihttps://hdl.handle.net/10016/31596
dc.identifier.uxxiAR/0000026450
dc.language.isoengen
dc.publisherAmerican Association for the Advancement of Scienceen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/714577/PHONOMETAen
dc.relation.projectIDGobierno de España. RYC-2015-17156es
dc.rightsCopyright © 2019 Zhiwang Zhang et al. Exclusive licensee Science and Technology Review Publishing House. Distributed under a Creative Commons Attribution License (CC BY 4.0).en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.otherValleytronicsen
dc.subject.otherTopological insulatorsen
dc.subject.otherHoneycomb latticeen
dc.titleSubwavelength acoustic valley-hall topological insulators using soda cans honeycomb latticesen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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