Observation of negative refraction and negative phase velocity in true left-handed metamaterials

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buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage962en_US
dc.citation.spage959en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.contributor.authorSoukoulis, C.M.en_US
dc.coverage.spatialManchester, UKen_US
dc.date.accessioned2016-02-08T11:43:01Z
dc.date.available2016-02-08T11:43:01Z
dc.date.issued2007en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionDate of Conference: 10-15 Sept. 2006en_US
dc.description.abstractWe report a true left-handed (LH) behavior in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is demonstrated by comparing the transmission spectra of SRRs with that of closed SRRs. We confirmed experimentally that the effective plasma frequency of the LH material composed of SRRs and wires is lower than the plasma frequency of the wires. A well-defined left-handed transmission band with a peak value of -1.2 dB (-0.3 dB/cm) is obtained. We also report the transmission characteristics of a 2D composite metamaterial (CMM) structure in free space. At the frequencies where left-handed transmission takes place, we experimentally confirmed that the CMM structure has effective negative refractive index. Phase shift between consecutive numbers of layers of CMM is measured and phase velocity is shown to be negative at the relevant frequency range. Refractive index values obtained from the refraction experiments and the phase measurements are in good agreement. The experimental results agree extremely well with the theoretical calculations. © 2006 EuMA.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T11:43:01Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2007en
dc.identifier.doi10.1109/EUMC.2006.281081en_US
dc.identifier.urihttp://hdl.handle.net/11693/27051
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/EUMC.2006.281081en_US
dc.source.title2006 European Microwave Conferenceen_US
dc.subjectElectric power transmissionen_US
dc.subjectPhase measurementen_US
dc.subjectPhase shiftersen_US
dc.subjectResonatorsen_US
dc.subjectLeft-handed mediumen_US
dc.subjectMetamaterialen_US
dc.subjectNegative phase velocityen_US
dc.subjectNegative refractionen_US
dc.subjectSplit ring resonatoren_US
dc.subjectRefractionen_US
dc.titleObservation of negative refraction and negative phase velocity in true left-handed metamaterialsen_US
dc.typeConference Paperen_US

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