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Non-Hermitian elastodynamics in gyro-odd continuum media

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.contributor.authorGao, Penglin
dc.contributor.authorQu, Yegao
dc.contributor.authorChristensen, Johan
dc.contributor.funderEuropean Commissionen
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2023-02-06T11:08:25Z
dc.date.available2023-02-06T11:08:25Z
dc.date.issued2022-10-13
dc.description.abstractLinear elasticity has long been considered a well-established research area using conservative field theory. However, the discovery of odd-elasticity challenges the essential energy conservation assumption, which together with gyroscopic ingredients compromise the fundamental theory of elasticity, but to the same effect, enable new directions in active elastodynamics. Here, we consider two-dimensional continuum mechanics in a more general framework containing active constituents from both gyroscopic and odd-elastic effects, which gives rise to non-reciprocal and non-Hermitian elastic waves in a highly unconventional guise. We discuss how these unusual media can extract energy from odd-elastic engine cycles comprising remarkable features of stability transitions, in which the energy exchange process reverses. Beyond bulk waves, akin to the unidirectional characteristics of a 2D quantum-Hall insulator, we demonstrate the existence of non-Hermitian Rayleigh surface waves which, in contrast to the classical ones in passive solids, display one-way and interference-free transport characteristics, which even remain resilient in finite sharp or curved geometries. The findings reported here may provide new possibilities to manipulate elastic waves in unusual ways.en
dc.description.sponsorshipJ.C. acknowledges the support from the European Research Council (ERC) through the Starting Grant No. 714577 PHONOMETA and from the MINECO through a Ramón y Cajal grant (Grant No. RYC-2015-17156). Y.Q. acknowledges the support from the National Natural Science Foundation of China (Grant Nos. U2141244, 11922208, 11932011, 12121002) and the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University (Grant No. SL2021ZD104). P.G. acknowledges the support from the National Natural Science Foundation of China (Grant No. 12202267), Shanghai Pujiang Program (Grant No. 22PJ1405300) and the Starting Grant of Shanghai Jiao Tong University (Grant No. WH220402014).en
dc.format.extent6es
dc.identifier.bibliographicCitationGao, Penglin ; Qu, Yegao; Christensen, Johan. Non-Hermitian elastodynamics in gyro-odd continuum media. In: Communications materials vol. 3, Article number 74, Oct. 2022, 6 p.en
dc.identifier.doihttps://doi.org/10.1038/s43246-022-00297-5
dc.identifier.issn2662-4443
dc.identifier.publicationfirstpage1es
dc.identifier.publicationissue74es
dc.identifier.publicationlastpage6es
dc.identifier.publicationtitleCommunications materialsen
dc.identifier.publicationvolume3es
dc.identifier.urihttps://hdl.handle.net/10016/36476
dc.identifier.uxxiAR/0000032062
dc.language.isoengen
dc.publisherSpringer Natureen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/714577/PHONOMETAes
dc.relation.projectIDGobierno de España. RYC-2015-17156es
dc.rights© 2022, The Author(s)en
dc.rightsThis is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accesses
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.ecienciaMaterialeses
dc.subject.otherContinuum mechanicsen
dc.subject.otherElasticityen
dc.subject.otherQuantum Chemistryes
dc.subject.otherSurface wavesen
dc.titleNon-Hermitian elastodynamics in gyro-odd continuum mediaen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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