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      Thermal annealing effects on the electrical and structural properties of Ni/Pt Schottky contacts on the quaternary AlInGaN epilayer 

      Arslan, Engin; Altındal, Ş.; Ural, Sertaç; Kayal, Ömer A.; Öztürk, Mustafa; Özbay, Ekmel (Springer US, 2019)
      Pt/Au, Ni/Au, Ni/Pt/Au Schottky contacts were placed on a quaternary Al0.84In0.13Ga0.03N epilayer. The electrical and structural properties of the as-deposited Pt/Au, Ni/Au, Ni/Pt/Au and annealed Ni/Pt/Au Schottky contacts ...
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      Structural parameters and electronic properties of 2D carbon allotrope: graphene with a kagome lattice structure 

      Sarıkavak-Lisesivdin, B.; Lisesivdin, S. B.; Özbay, Ekmel; Jelezko, F. (Elsevier, 2020)
      In this paper, the electronic properties of a carbon allotrope, graphene with a kagome lattice structure, are investigated. Spin-polarized density functional theory (DFT) calculations with Grimme dispersion corrections ...
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      Angstrom thick ZnO passivation layer to improve the photoelectrochemical water splitting performance of a TiO 2 nanowire photoanode: The role of deposition temperature 

      Ghobadi, Amir; Ulusoy-Ghobadi, Türkan Gamze; Karadaş, Ferdi; Özbay, Ekmel (Nature Publishing Group, 2018)
      In this paper, we demonstrate that angstrom thick single atomic layer deposited (ALD) ZnO passivation can signifcantly improve the photoelectrochemical (PEC) activity of hydrothermally grown TiO2 NWs. It is found that this ...
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      Spatial filtering using dielectric photonic crystals at beam-type excitation 

      Colak, E.; Cakmak, A. O.; Serebryannikov, A. E.; Özbay, Ekmel (American Institute of Physics, 2010-12-06)
      Spatial filtering is demonstrated at beam-type excitations by utilizing finite thickness slabs of two-dimensional dielectric photonic crystals (PCs) showing exotic Fabry-Perot resonances that are preserved over a wide range ...
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      Coupling and phase analysis of cavity structures in two-dimensional photonic crystals 

      Guven, K.; Özbay, Ekmel (American Physical Society, 2005)
      An experimental and numerical study of the coupling properties of cavity waveguides and the phase advancement through the coupled cavity waveguides in two-dimensional photonic crystals is presented. We find that the ...
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      Rapid and sensitive colorimetric ELISA using silver nanoparticles, microwaves and split ring resonator structures 

      Addae, S.A.; Pinard, M.A.; Caglayan H.; Cakmakyapan, S.; Caliskan, D.; Özbay, Ekmel; Aslan, K. (2010)
      We report a new approach to colorimetric Enzyme-Linked Immunosorbent Assay (ELISA) that reduces the total assay time to < 2 min and the lower-detection-limit by 100-fold based on absorbance readout. The new approach ...
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      Low-temperature behavior of magnetic metamaterial elements 

      Alici, K. B.; Özbay, Ekmel (Institute of Physics Publishing Ltd., 2009)
      Periodically arranged metallic resonators can produce a negative permeability medium. However, the resonant response weakens at extreme regimes under certain conditions, which is the major problem of obtaining a negative ...
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      Ferroelectric Based Photonic Crystal Cavity by Liquid Crystal Infiltration 

      Karaomerlioglu, F.; Simsek S.; Mamedov, A. M.; Özbay, Ekmel (Taylor & Francis, 2014)
      A novel type of two-dimensional photonic crystal is investigated for it optical properties as a core-shell-type ferroelectric nanorod infiltrated with nematic liquid crystals. Using the plane wave expansion method and ...
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      Optical properties of metamaterial-based devices modulated by a liquid crystal 

      Karaomerlioglu, F.; Mamedov, A. M.; Özbay, Ekmel (Springer Berlin Heidelberg, 2014)
      Due to the fact that it is possible to manipulate light with photonic crystals (PCs), PCs hold a great potential for designing new optical devices. There has been an increase in research on tuning the optical properties ...
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      Low damage etching of GaN surfaces via bias-assisted photoenhanced electrochemical oxidation in deionized water 

      Alptekin, E.; Yu, H.; Özbay, Ekmel; Aktas, O. (Springer New York LLC, 2007)
      Properties of GaN surfaces etched by bias-assisted photoenhanced electrochemical (PEC) oxidation in deionized water and subsequent removal of the oxidized material are investigated using Schottky diodes fabricated on etched ...
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      Özbay, Ekmel (498)
      Serebryannikov, A. E. (43)Caglayan, H. (35)Lisesivdin, S. B. (35)Ghobadi, Amir (33)Aydin, K. (32)Arslan, E. (31)Mamedov, Amirullah M. (29)Özçelik, S. (28)Ozcelik, S. (23)... View MoreKeywordsMetamaterials (50)Gallium nitride (23)Optical properties (23)Refractive index (20)Metamaterial (19)Plasmons (18)Photonic crystals (15)Plasmonics (15)Polarization (15)Split ring resonator (15)... View MoreDate Issued2010 - 2020 (341)2000 - 2009 (152)1995 - 1999 (5)TypeArticle (405)Conference Paper (81)Review (6)Book Chapter (3)Editorial (3)Has File(s)Yes (498)

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