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dc.contributor.authorÇakır, Mehmet Cihan
dc.contributor.authorKoçer, Hasan
dc.contributor.authorDurna, Y.
dc.contributor.authorYıldırım, Deniz Umut
dc.contributor.authorGhobadi, Amir
dc.contributor.authorHajian, Hodjat
dc.contributor.authorAydın, K.
dc.contributor.authorKurt, H.
dc.contributor.authorSağlam, N.
dc.contributor.authorÖzbay, Ekmel
dc.date.accessioned2021-03-03T13:15:38Z
dc.date.available2021-03-03T13:15:38Z
dc.date.issued2020
dc.identifier.issn2046-2069
dc.identifier.urihttp://hdl.handle.net/11693/75730
dc.description.abstractThe phase change behavior of vanadium dioxide (VO2) has been widely explored in a variety of optical and photonic applications. Commonly, its optical parameters have been studied in two extreme regimes: hot (metallic) and cold (insulating) states. However, in the transition temperatures, VO2 acts like an inherent metamaterial with mixed metallic-insulating character. In this range, the portions of metallic and insulating inclusions are tuned by temperature, and therefore a gradual change of optical parameters can be achieved. In this paper, a universal hybrid modeling approach is developed to model VO2 in the intermediate region. For this aim, the measured reflectivity data, is analyzed and matched through the transfer matrix method (TMM) simulations where an effective medium theory (EMT) is employed. Based on the findings of this approach, not only the relative portions of inclusions are tailored but also their grain shapes are significantly altered in the transition range. Finally, the modeling approach is testified by experimental findings through dynamic device applications operating at short and mid infrared wavelengths. In addition, the hysteretic behaviors on electrical, optical, and structural parameters of the VO2 film along the heating and cooling cycles are demonstrated by the experiments and scrutinized by the simulations.en_US
dc.language.isoEnglishen_US
dc.source.titleRSC Advancesen_US
dc.relation.isversionofhttps://dx.doi.org/10.1039/d0ra05890den_US
dc.titleUnveiling the optical parameters of vanadium dioxide in the phase transition region: a hybrid modeling approachen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.citation.spage29945en_US
dc.citation.epage29955en_US
dc.citation.volumeNumber10en_US
dc.citation.issueNumber50en_US
dc.identifier.doi10.1039/d0ra05890den_US
dc.publisherRoyal Society of Chemistryen_US
dc.contributor.bilkentauthorÇakır, Mehmet Cihan
dc.contributor.bilkentauthorKoçer, Hasan
dc.contributor.bilkentauthorYıldırım, Deniz Umut
dc.contributor.bilkentauthorGhobadi, Amir
dc.contributor.bilkentauthorHajian, Hodjat
dc.contributor.bilkentauthorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828en_US


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