Self-collimation and slow-sound effect of spoof surface acoustic waves

Basit Öğe Kaydı
dc.authoridCicek, Ahmet/0000-0002-7686-0045
dc.authoridKorozlu, Nurettin/0000-0002-0899-0227
dc.authoridKAYA, Olgun Adem/0000-0002-8728-6341
dc.authorwosidCicek, Ahmet/D-5990-2012
dc.authorwosidKAYA, Olgun Adem/ABH-6274-2020
dc.authorwosidKorozlu, Nurettin/H-6346-2016
dc.contributor.authorKorozlu, N.
dc.contributor.authorKaya, O. A.
dc.contributor.authorCicek, A.
dc.contributor.authorUlug, B.
dc.date.accessioned2024-08-04T20:45:43Z
dc.date.available2024-08-04T20:45:43Z
dc.date.issued2019
dc.departmentİnönü Üniversitesien_US
dc.description.abstractSelf-collimated propagation and slow-sound effect of spoof acoustic surface waves over a thin solid slab with partially embedded spherical cavities in a square lattice are numerically and experimentally demonstrated. Band structure calculations via the Finite-Element Method reveal that a single spoof surface wave band appears below the air-line, which flattens as the spheres are embedded deeper, leveraging the observation of self-collimated slow spoof modes. For a radius-to-lattice constant ratio of 0.45 and embedding depth of 60% of the radius, the surface band is such that non-diffractive guiding of spoof waves along the [11] direction can be achieved. Persistent self-collimated propagation of spoof surface waves over long distances is demonstrated through frequency-domain Finite-Element Method simulations. Plane waves incident from air can couple to the self-collimated modes for a wide range of azimuthal angle of incidence up to 60 degrees, where the polar angle of incidence can be in the range of +/- 15 degrees. Self-collimation of spoof waves is experimentally realized by employing a plane-wave source incident from air. In addition, when the embedding depth is higher than 85%, self-collimated slow spoof modes with group indices higher than 15 can be obtained. The observed phenomena can be utilized in two-dimensional acoustic systems such as logic circuits and interferometric sensing devices. Published under license by AIP Publishing.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [116F085]en_US
dc.description.sponsorshipThis work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under Grant No. 116F085.en_US
dc.identifier.doi10.1063/1.5061770
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-85061747156en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1063/1.5061770
dc.identifier.urihttps://hdl.handle.net/11616/98658
dc.identifier.volume125en_US
dc.identifier.wosWOS:000459401100014en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmer Inst Physicsen_US
dc.relation.ispartofJournal of Applied Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keywords]en_US
dc.titleSelf-collimation and slow-sound effect of spoof surface acoustic wavesen_US
dc.typeArticleen_US

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