Browsing by Author "Ozbay, Ekmel"

Now showing items 1-9 of 9

    • Current transport properties of (Au/Ni)/HfAlO3/n-Si metal–insulator–semiconductor junction 

      Arslan, Engin; Badali, Yosef; Aalizadeh, Majid; Altındal, Semsettin; Ozbay, Ekmel (Elsevier Ltd, 2020-09-11)
      In this study, HfAlO3 ternary alloy thin film was grown on n-type silicon using the atomic layer deposition method. The current transport mechanisms in the (Au/Ni)/HfAlO3/n-Si junction were examined over a wide temperature ...

    • Design of GaN-based X-band LNAs to achieve sub-1.2 dB noise figure 

      Zafar, Salahuddin; Aras, Erdem; Cankaya Akoglu, Busra; Tendurus, Gizem; Nawaz, Muhammad Imran; Kashif, Ahsanullah; Ozbay, Ekmel (Wiley, 2022-08-21)
      GaAs and SiGe technologies take an edge over GaN-based devices in terms of better noise figure (NF). In this article, we present HEMT topologies and design techniques to achieve a sub-1.2 dB NF for a GaN-based X-band ...

    • Exceptional adaptable MWIR thermal emission for ordinary objects covered with thin VO2 film 

      Durna, Yılmaz; Kocer, Hasan; Aydın, Koray; Cakir, Mehmet Cihan; Soydan, Mahmut Can; Odabasi, Oguz; Işık, Halil; Ozbay, Ekmel (Elsevier Ltd, 2021-01-25)
      Monotonous thermal radiation emitted from an ordinary object can be brought into a dynamic and versatile form that can be shaped according to the application area with the ingenious design of the surface coatings. Building ...

    • How to build prussian blue‐based water oxidation catalytic assemblies? Common trends and strategies 

      Ulusoy Ghobadi, T. Gamze; Ozbay, Ekmel; Karadas, Ferdi (Wiley-VCH Verlag GmbH & Co. KGaA, 2021)
      Prussian blue (PB) and its analogues (PBAs) have at least a three-century-long history in coordination chemistry. Recently, cobalt-based PBAs have been acknowledged as efficient and robust water oxidation catalysts. Given ...

    • The mechanical, electronic and optical properties of Sn2P2S6 compound in different phases 

      Koc, H.; Palaz, S.; Simsek, S.; Mamedov, Amirullah M.; Ozbay, Ekmel (Taylor & Francis, 2021-12-01)
      In present paper, the structural, mechanical, and electronic properties of the Sn2P2S6 compound under different pressures by the density functional methods in the generalized gradient approximation have been examined in ...

    • Phononic crystals with archimedean-like tiling: band structure and the transformation of sound 

      Ozer, Z.; Mamedov, Amirullah M.; Ozbay, Ekmel (Taylor & Francis, 2021-12-01)
      In this study, we investigate acoustic wave propagation in 3 D phononic crystal (PnC) slabs wherein scatterers have different cross sections by using the finite-element method. The PnC consists of scatterers embedded in ...

    • Plasma-enhanced atomic layer deposition of amorphous Ga2O3 gate dielectrics 

      Badali, Y.; Arslan, Engin; Ulusoy Ghobadi, Turkan Gamze; Ozbay, Ekmel; Ozcelik, S. (Elsevier Ltd, 2022-08-30)
      Amorphous gallium oxide (Ga2O3) thin films were investigated as gate dielectrics for electronic device applications using plasma-enhanced atomic layer deposition. The structural and morphological properties as well as the ...

    • Second harmonic generation in generalized ferroelectric superlattices 

      Ozer, Z.; Palaz, S.; Mamedov, Amirullah M.; Ozbay, Ekmel (Taylor & Francis, 2021-12-01)
      The goal of the work presented in this investigation is to achieve the efficient parametric interaction of narrow beams (in particular second harmonic generation) using a nonlinear (ferroelectric-LiTaO3) photonic crystal ...

    • Slater insulator phase of X2 (X = Na, Li)IrO3: first principles calculation 

      Koc, H.; Palaz, S.; Mamedov, Amirullah M.; Ozbay, Ekmel (Taylor & Francis, 2021-12-01)
      In the present work, the structural, electronic and mechanical properties of Na2IrO3 and Li2IrO3 have been investigated by means of first principles calculations. The spin polarized generalized gradient approximation has ...