Now showing items 1-10 of 10

    • Comparative investigation og hydrogen bonding in silicon based PECVD grown dielectrics for optical 

      Ay, F.; Aydınlı, Atilla (Elsevier, 2004-06)
      Silicon oxide, silicon nitride and silicon oxynitride layers were grown by a PECVD technique. The resulting refractive indices of the layers varied between 1.47 and 1.93. The compositional properties of the layers were ...
    • CVD grown 2D MoS2 layers: a photoluminescence and fluorescence lifetime imaging study 

      Özden, A.; Şar, H.; Yeltik A.; Madenoğlu, B.; Sevik, C.; Ay, F.; Perkgöz, N. K. (Wiley-VCH Verlag, 2016)
      In this letter, we report on the fluorescence lifetime imaging and accompanying photoluminescence properties of a chemical vapour deposition (CVD) grown atomically thin material, MoS2. µ-Raman, µ-photoluminescence (PL) and ...
    • A distinct correlation between the vibrational and thermal transport properties of group VA monolayer crystals 

      Kocabaş, T.; Çakır, D.; Gülseren, Oğuz; Ay, F.; Kosku-Perkgöz, N.; Sevik, C. (Royal Society of Chemistry, 2018)
      The investigation of thermal transport properties of novel two-dimensional materials is crucially important in order to assess their potential to be used in future technological applications, such as thermoelectric power ...
    • An elastomeric grating coupler 

      Kocabas, A.; Ay, F.; Dâna, A.; Aydınlı, Atilla (IOP Institute of Physics, 2006)
      We report on a novel nondestructive and reversible method for coupling free space light to planar optical waveguides. In this method, an elastomeric grating is used to produce an effective refractive index modulation on ...
    • High-refractive-index measurement with an elastromeric grating coupler 

      Kocabas, A.; Ay, F.; Dana, A.; Kiyat, A.; Aydınlı, Atilla (Optical Society of America, 2005)
      An elastomeric grating coupler fabricated by the replica molding technique is used to measure the modal indices of a silicon-on-insulator (SOI) planar waveguide structure. Because of the van der Waals interaction between ...
    • Influence of substrate temperature and bias voltage on the optical transmittance of TIN Films 

      Durusoy, H. Z.; Duyar, O.; Aydınlı, Atilla; Ay, F. (Elsevier Science, 2003)
      Titanium nitride (TiN) thin films were prepared by means of reactive DC sputtering on quartz and sapphire substrates. Structural, electrical and optical effects of deposition parameters such as thickness, substrate ...
    • Low-loss as-grown germanosilicate layers for optical waveguides 

      Ay, F.; Aydınlı, Atilla; Agan, S. (A I P Publishing LLC, 2003)
      We report on systematic growth and characterization of low-loss germanosilicate layers for use in optical waveguide technology. The films were deposited by plasma-enhanced chemical vapor deposition technique using silane, ...
    • MoS2 phototransistor sensitized by colloidal semiconductor quantum wells 

      Sar, H.; Taghipour, Nima; Lisheshar, İ. W.; Delikanlı, Savaş; Demirtaş, M.; Demir, Hilmi Volkan; Ay, F.; Perkgöz, N. K. (Wiley-VCH Verlag, 2020-12)
      A phototransistor built by the assembly of 2D colloidal semiconductor quantum wells (CQWs) on a single layer of 2D transition metal dichalcogenide (TMD) is displayed. This hybrid device architecture exhibits high efficiency ...
    • Prism coupling technique investigation of elasto-optical properties of thin polymer films 

      Ay, F.; Kocabas, A.; Kocabas, C.; Aydınlı, Atilla; Agan, S. (American Institute of Physics, 2004)
      The use of thin polymer films in optical planar integrated optical circuits is rapidly increasing. Much interest, therefore, has been devoted to characterizing the optical and mechanical properties of thin polymer films. ...
    • Stress effects in prism coupling measurements of thin polymer films 

      Agan, S.; Ay, F.; Kocabas, A.; Aydınlı, Atilla (Springer, 2005)
      Due to the increasingly important role of some polymers in optical waveguide technologies, precise measurement of their optical properties has become important. Typically, prism coupling to slab waveguides made of materials ...