Now showing items 1-5 of 5

    • Efficient methods for electromagnetic characterization of 2-D geometries in stratified media 

      Çalışkan, Fatma; Aksun, M. İrşadi; Gürel, Levent (IEEE, 1998)
      Numerically efficient method of moments (MoM) algorithms are developed for and applied to 2-D geometries in multilayer media. These are, namely, the spatial-domain MoM in conjunction with the closed-form Green's functions, ...
    • Electronic structure of Te-and As-covered Si(211) 

      Sen, P.; Batra, I. P.; Sivananthan, S.; Grein, C. H.; Dhar, N.; Çıracı, Salim (American Physical Society, 2003)
      Electronic and atomic structures of the clean and As- and Te-covered Si(211) surface are studied using pseudopotential density-functional method. The clean surface is found to have (2 x 1) and rebonded (1 x 1) reconstructions ...
    • Finite temperature studies of Te adsorption on Si(0 0 1) 

      Sen, P.; Çıracı, Salim; Batra, I. P.; Grein, C. H.; Sivananthan, S. (Elsevier, 2002)
      We perform first principles density functional calculations to investigate the adsorption of Te on the Si(0 0 1) surface from low coverage up to a monolayer coverage. At low coverage, a Te atom is adsorbed on top of the ...
    • Investigation of metamaterial coated conducting cylinders for achieving transparency and maximizing radar cross section 

      Ircı, Erdinç; Ertürk, Vakur B. (IEEE, 2007)
      Recently, reducing the radar cross sections (RCS) of various structures to achieve transparency and obtaining resonant structures aimed at increasing the electromagnetic intensities, stored or radiated power levels have ...
    • Te covered Si(001): a variable surface reconstruction 

      Sen, P.; Çıracı, Salim; Batra, I. P.; Grein, C. H. (American Physical Society, 2001)
      At a given temperature, clean and adatom covered silicon surfaces usually exhibit well-defined reconstruction patterns. Our finite temperature ab initio molecular dynamics calculations show that the tellurium covered Si(001) ...