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dc.contributor.advisorÖzbay, Ekmel
dc.contributor.authorÇakmakyapan, Semih
dc.date.accessioned2016-01-08T20:02:58Z
dc.date.available2016-01-08T20:02:58Z
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/11693/16913
dc.descriptionAnkara : The Department of Physics and the Graduate School of Engineering and Science of Bilkent University, 2015.en_US
dc.descriptionThesis (Ph. D.) -- Bilkent University, 2015.en_US
dc.descriptionIncludes bibliographical references leaves 88-102.en_US
dc.description.abstractFocusing, manipulating and beaming of electromagnetic waves are important for many applications such as antennas, optical isolators, biological sensor, chemical sensors, and solar cells. There is an extensive research about the manipulation of light, and its interaction with di erent types of materials including subwavelength structures. However, manipulating light at the nanoscale has many di culties due to the di raction limit. In this thesis, we mainly focus on the characterization and experiments of subwavelength plasmonic structures. We investigated the spatial distribution of the electric eld through subwavelength slits by using symmetric and non-symmetric periodic metallic grating structures in order to obtain one-way transmission, o -axis beaming, collimation and diode-like beaming. We also studied various plasmonic structures such as circular rings and fractal bowtie antennas. After combining them with Raman active molecules, we showed that these plasmonic structures can be used as e cient surface enhanced Raman spectroscopy substrates. Finally, we designed, fabricated and measured nanoantennas and split ring resonators on graphene in order to tune their optical response using the electrically controllable doping property of the graphene.en_US
dc.description.statementofresponsibilityÇakmakyapan, Semihen_US
dc.format.extentxiv, 105 leaves, graphics, illustrationsen_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSurface Plasmonsen_US
dc.subjectSubwavelength Localizationen_US
dc.subjectMetamaterialen_US
dc.subjectSplit Ring Resonatoren_US
dc.subjectMetallic Gratingsen_US
dc.subjectPlasmonic Lensen_US
dc.subjectRaman Spectroscopyen_US
dc.subjectNanoantennasen_US
dc.subjectGrapheneen_US
dc.subject.lccQC176.8.P88 C35 2015en_US
dc.subject.lcshPlasmans (Physics)en_US
dc.subject.lcshNanophotonics.en_US
dc.titlePlasmonic nanoantennas for enhanced light-matter interactions and graphene based tunable nanophotonic devicesen_US
dc.typeThesisen_US
dc.departmentDepartment of Physicsen_US
dc.publisherBilkent Universityen_US
dc.description.degreePh.D.en_US


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