Now showing items 21-26 of 26

    • Theoretical investigations on the energy relaxation in two-dimensional GaN systems 

      Taş, Murat; Tanatar, Bilal (Wiley, 2007)
      We theoretically study the energy relaxation of hot electrons via LO-phonon emission in two-dimensional GaN systems. We employ a model in which electrons and the lattice are in equilibrium separately, and the effective ...
    • Three-dimensional nanoplasmonic surfaces with strong out-of-plane electric field enhancement 

      Güngör, Kıvanç; Ünal, Emre; Demir, Hilmi Volkan (IEEE, 2013)
      Conventional 2D plasmonic structures, with surface coverage ~50%, provide field enhancement in the plane. The proposed 3D nanoplasmonic surfaces, with unity coverage, achieve 7.2-fold stronger out-of-plane enhancement ...
    • Two-dimensional boson-fermion mixtures 

      Subaşi, A.L.; Sevinçli, S.; Vignolo P.; Tanatar, Bilal (2009)
      Using mean-field theory, we study the equilibrium properties of boson-fermion mixtures confined in a harmonic pancake-shaped trap at zero temperature. When the modulus of the s -wave scattering lengths are comparable to ...
    • Two-dimensional Mellin and mel-cepstrum for image feature extraction 

      Çakır, Serdar; Çetin, A. Enis (Springer, Dordrecht, 2010)
      An image feature extraction method based on two-dimensional (2D)Mellin cepstrum is introduced. The concept of one-dimensional (1D) melcepstrum which is widely used in speech recognition is extended to two-dimensions both ...
    • Two-dimensional x-ray photoelectron spectroscopy for composite surface analysis 

      Suzer, S.; Sezen, H.; Dâna, A. (2008)
      We describe a method for obtaining two-dimensional X-ray photoelectron spectroscopic data derived from the frequency dependence of the XPS peaks recorded under electrical square-wave pulses, which control and affect the ...
    • Ultrasonic surface profile determination by spatial voting 

      Barshan, Billur (IEEE, 2001)
      A novel spatial voting scheme is described for surface profile determination based on multiple ultrasonic range measurements. Spatial voting relies on the number of votes accumulated in each pixel of the ultrasonic arc map ...