Now showing items 1-7 of 7

    • Dynamic relationship between precious metals 

      Sensoy, A. (2013)
      We use a relatively new approach to endogenously detect the volatility shifts in the returns of four major precious metals (gold, silver, platinum and palladium) from 1999 to 2013. We reveal that the turbulent year of 2008 ...
    • Phytoremediation of Cu, Cr and Pb mixtures by lemna minor 

      Üçüncü, E.; Tunca, E.; Fikirdeşici, S.; Özkan, A.D.; Altindaǧ, A. (2013)
      The present study reports the capacity of the aquatic macrophyte Lemna minor to remediate combinations of Cu(II), Pb(II) and Cr(III) from a simulated natural environment. The effect of these metal mixtures on the growth ...
    • Six low-strain zinc-blende half metals: An ab initio investigation 

      Pask J.E.; Yang L.H.; Fong, C.Y.; Pickett W.E.; Dag, S. (2003)
      A class of spintronic materials, the zinc-blende (ZB) half metals, has recently been synthesized in thin-film form. We apply all-electron and pseudopotential ab initio methods to investigate the electronic and structural ...
    • A study of adsorption of single atoms on carbon nanotubes 

      Durgun, Engin (Bilkent University, 2003)
      The adsorption of individual atoms on the semiconducting and metallic singlewall carbon nanotubes (SWNT) have been investigated by using first-principles pseudopotential plane wave method within Density Functional Theory. ...
    • Surface wave splitter based on metallic gratings with sub-wavelength aperture 

      Caglayan H.; Özbay, Ekmel (Optical Society of American (OSA), 2008)
      We investigated the splitting of surface electromagnetic waves trapped at the output surface of a one-dimensional metallic grating structure. The output gratings of the structure asymmetrically such that the output surfaces ...
    • Triangular metallic gratings for large absorption enhancement in thin film Si solar cells 

      Battal, E.; Yogurt, T.A.; Aygun L.E.; Okyay, Ali Kemal (Optical Society of American (OSA), 2012)
      We estimate high optical absorption in silicon thin film photovoltaic devices using triangular corrugations on the back metallic contact. We computationally show 21.9% overall absorptivity in a 100-nmthick silicon layer, ...
    • Unidirectional transmission in non-symmetric gratings containing metallic layers 

      Serebryannikov, A.E.; Özbay, Ekmel (Optical Society of American (OSA), 2009)
      The mechanism of achieving unidirectional transmission in the gratings, which only contain isotropic dielectric and metallic layers, is suggested and numerically validated. It is shown that significant transmission in one ...