Now showing items 201-206 of 206

    • Fabrication and characterization of 50 nm silicon nano-gap structures 

      T.S, Dhahi; Uda, Hashim, Prof. Dr.; N.M., Ahmed (American Scientific Publishers, 2011-04)
      A simple method for the fabrication of nano-gaps less than 50 nm by using conventional photolithography combined with patterned-size reduction techniques is presented. Silicon material is used to fabricate the nano-gap ...
    • Investigated optical and elastic properties of Porous silicon: Theoretical study 

      Y., Al-Douri; N.M., Ahmed; N., Bouarissa; A, Bouhemadou (Elsevier Ltd., 2011-08)
      Compatibility between experimental and theoretical works is achieved. Empirical Pseudopotential Method (EPM) is used to calculate the energy gap of Si which is found to be indirect. Features such as refractive index, optical ...
    • Calculated optical properties of GaX (X=P, As, Sb) under hydrostatic pressure 

      Y., Al-Douri; Ali, Hussain Reshak (Springer-Verlag, 2011)
      The hydrostatic pressure dependence of the principal energy gaps and of the optical properties of GaX (X = P, As and Sb) has been calculated using the full potential-linearized augmented plane wave (FP-LAPW) method. The ...
    • Investigated optical and elastic properties of Porous silicon: Theoretical study 

      Yarub, Al - Douri; Nasser Mahmoud, Ahmed; N., Bouarissa; A., Bouhemadou (Elsevier Ltd., 2011-08)
      Compatibility between experimental and theoretical works is achieved. Empirical Pseudopotential Method (EPM) is used to calculate the energy gap of Si which is found to be indirect. Features such as refractive index, optical ...
    • An ab initio study of the electronic structure and optical properties of CdS1-xTex alloys 

      Yarub, Al - Douri; Ali Hussain, Reshak, Prof. Dr.; H., Baaziz; Z., Charifi; R., Khenata; S., Ahmad; Uda, Hashim, Prof. Dr. (Elsevier Ltd., 2010-12)
      The structural, electronic and optical properties of cubic CdS1-xTex alloys, with Te-concentrations varying from 0% up to 100% are investigated. The calculations are based on the total-energy calculations using the full ...
    • A review on the electrochemical sensors and biosensors composed of nanogaps as sensing material 

      Dhahi, T. H. S.; Uda, Hashim, Prof. Dr.; Ahmed, N. M.; Mat Taib, A. (National Institute of Research and Development for Optoelectronics, 2010)
      In the past two decades, the biological and medical fields have seen great advances in the development of biosensors and biochips capable of characterizing and quantifying biomolecules.To understand the important relationship ...