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  1. Article

    Open Access

    Surface Decoration of Pt Nanoparticles via ALD with TiO2 Protective Layer on Polymeric Nanofibers as Flexible and Reusable Heterogeneous Nanocatalysts

    Coupling the functional nanoheterostructures over the flexible polymeric nanofibrous membranes through electrospinning followed by the atomic layer deposition (ALD), here we presented a high surface area platf...

    Asli Celebioglu, Kugalur Shanmugam Ranjith, Hamit Eren, Necmi Biyikli in Scientific Reports (2017)

  2. No Access

    Article

    Using nanogap in label-free impedance based electrical biosensors to overcome electrical double layer effect

    Point-of-care biosensor applications require low-cost and low-power solutions. They offer being easily accessible at home site. They are usable without any complex sample handling or any kind of special expert...

    Ali Kemal Okyay, Oguz Hanoglu, Mustafa Yuksel, Handan Acar in Microsystem Technologies (2017)

  3. No Access

    Article

    ZnO Nanostructures on Electrospun Nanofibers by Atomic Layer Deposition/Hydrothermal Growth and Their Photocatalytic Activity

    A hierarchy of nanostructured-ZnO was fabricated on the electrospun nanofibers by atomic layer deposition (ALD) and hydrothermal growth, subsequently. Firstly, we produced poly(acrylonitrile) (PAN) nanofibers ...

    Fatma Kayaci, Sesha Vempati, Cagla Ozgit-Akgun in MRS Online Proceedings Library (2014)

  4. Article

    Open Access

    Size-controlled conformal nanofabrication of biotemplated three-dimensional TiO2 and ZnO nanonetworks

    A solvent-free fabrication of TiO2 and ZnO nanonetworks is demonstrated by using supramolecular nanotemplates with high coating conformity, uniformity and atomic scale size control. Deposition of TiO2 and ZnO on ...

    Hakan Ceylan, Cagla Ozgit-Akgun, Turan S. Erkal, Inci Donmez in Scientific Reports (2013)

  5. No Access

    Article

    Preparation of Al2O3 and AlN Nanotubes by Atomic Layer Deposition

    Al2O3 and AlN nanotubes were fabricated by depositing conformal thin films via atomic layer deposition (ALD) on electrospun nylon 66 (PA66) nanofiber templates. Depositions were carried out at 200°C, using trimet...

    Cagla Ozgit, Fatma Kayaci, Inci Donmez, Engin Cagatay in MRS Online Proceedings Library (2012)

  6. No Access

    Article

    Solar-Blind AlGaN-based Schottky Photodiodes With High Detectivity and Low Noise

    We report on the design, fabrication and characterization of solar-blind Schottky photodiodes with high detectivity and low noise. The devices were fabricated on n-/n+ AlGaN/GaN hetero-structures using a microwav...

    Necmi Biyikli, Orhan Aytur, Ibrahim Kimukin, Turgut Tut in MRS Online Proceedings Library (2011)

  7. No Access

    Article

    High-Speed Solar-Blind AlGaN Schottky Photodiodes

    We report high-speed solar-blind AlGaN-based Schottky photodiodes. AlGaN/GaN heterostructure device layers were grown on sapphire substrate. The devices were fabricated on AlGaN/GaN heterostructuresusing a mic...

    Necmi Biyikli, Ibrahim Kimukin, Tolga Kartaloglu in MRS Online Proceedings Library (2011)

  8. No Access

    Article

    High-Performance AlGaN-Based Visible-Blind Resonant Cavity Enhanced Schottky Photodiodes

    We have designed, fabricated and tested resonant cavity enhanced visible-blind AlGaN-based Schottky photodiodes. The bottom mirror of the resonant cavity was formed with a 20 pair AlN/AlGaN Bragg mirror. The d...

    Ibrahim Kimukin, Necmi Biyikli, Tolga Kartaloglu in MRS Online Proceedings Library (2011)

  9. No Access

    Article

    Persistent Photoconductivity in High-mobility AlxGa1−xN/AlN/GaN Heterostructures Grown by Metal-organic Vapor-phase Epitaxy

    We report on the persistent photoconductivity (PPC) effect in AlxGa1−xN/AlN/GaN heterostructures with two different Al compositions (x=0.15 and 0.25). The two-dimensional electron gas (2DEG) was characterized by ...

    Necmi Biyikli, Umit Ozgur, **anfeng Ni, Yi Fu in MRS Online Proceedings Library (2007)

  10. Article

    High-Performance Solar-Blind AlGaN Schottky Photodiodes

    High-performance solar-blind AlGaN-based Schottky photodiodes have been demonstrated. The detectors were fabricated on MOCVD-grown AlGaN/GaN hetero-structures using a microwavecompatible fabrication process. C...

    Necmi Biyikli, Tolga Kartaloglu, Orhan Aytur in MRS Internet Journal of Nitride Semiconduc… (2003)

  11. Article

    High-Speed Visible-Blind Resonant Cavity Enhanced AlGaN Schottky Photodiodes

    We have designed, fabricated and tested resonant cavity enhanced visible-blind AlGaN-based Schottky photodiodes. The bottom mirror of the resonant cavity was formed with a 20 pair AlN/Al0 2Ga0.8N Bragg mirror. Th...

    Necmi Biyikli, Tolga Kartaloglu, Orhan Aytur in MRS Internet Journal of Nitride Semiconduc… (2003)