Browsing by Author "Aktaş, Ozan"

Now showing items 1-6 of 6

    • Chalcogenide micro and nanostructures and applications 

      Aktaş, Ozan (Bilkent University, 2014)
      Chalcogenides, which are glasses consist of S, Se and Te elements, are promising materials for photonics as silicon for modern electronics, due to their extraordinary material properties such as high nonlinearity and ...

    • Macroscopic assembly of indefinitely long and parallel nanowires into large area photodetection circuitry 

      Aktaş, Ozan; Özgür, Erol; Bayındır, Mehmet (Optical Society of America, 2012)
      We demonstrate a novel fabrication technique of a photodetection circuitry with light sensitive pixels consisting of hundreds of long and parallel selenium nanowires. Using 10x10 pixel format, alphabetic characters were ...

    • Macroscopic photoconductive nanowire arrays 

      Bayındır, Mehmet; Yaman, Mecit; Özgür, Erol; Aktaş, Ozan; Khudiyev, Tural; Kanık, Mehmet; Deniz, Hakan (IEEE, 2011)
      A novel high-throughput fabrication technique to produce polymer embedded functional chalcogenide nanowire arrays is demonstrated. Indefinitely-long selenium nanowire arrays are obtained and their size dependent photoconductivity ...

    • Multi-frequency fluxgate magnetic force microscopy 

      Aktaş, Ozan (Bilkent University, 2008)
      In the recent years, progress in atomic force microscopy (AFM) led to the multifrequency imaging paradigm in which the cantilever-tip ensemble is simultaneously excited by several driving forces of different frequencies. ...

    • Temperature-dependence of a GaN-based HEMT monolithic X-band low noise amplifier 

      Schwindt, R. S.; Kumar, V.; Aktaş, Ozan; Lee, J.-W.; Adesida, I. (IEEE, 2004-10)
      The temperature-dependent performance of a fully monolithic AlGaN/GaN HEMT-based X-band low noise amplifier is reported. The circuit demonstrated a noise figure of 3.5 dB, gain of 7.5 dB, input return loss of -7.5 dB, and ...

    • Ultrasensitive label-free microcavity biosensors with high selectivity 

      Özgür, Erol; Bayındır, Mehmet; Aktaş, Ozan (IEEE, 2011)
      High quality factor whispering gallery mode microresonators have been recently shown to exhibit detection sensitivity of single molecule; however, the selectivity of these sensors among different types of analytes remains ...