Browsing Institute of Nano Electronic Engineering (INEE) (Articles) by Author "yarub@unimap.edu.my"
Now showing items 1-20 of 31
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Alternative-current electrochemical etching of uniform porous silicon for photodetector applications
Husnen R., Abd; Yarub, Al-Douri, Assoc. Prof. Dr.; Naser Mahmoud, Ahmed, Dr.; Uda, Hashim, Prof. Dr. (Electrochemical Science Group, 2013)The twining of alternative-current (AC) with electrochemical etching (ECE) to fabricate porous silicon (PS) is studied. The porosity percentage is obtained by gravimetric analysis. The effect of different current densities; ... -
Application of gold nanoparticles for electrochemical DNA biosensor
Ahmed Mishaal, Mohammed; Ruslinda, Abdul Rahim, Dr.; Ibraheem Jaleel, Ibraheem; Foo, Kai Loong; Hasrul Hisham, Che Ahmad; Uda, Hashim, Prof. Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Hindawi Publishing Corporation, 2014)An electrochemical DNA biosensor was successfully fabricated by using (3-aminopropyl)triethoxysilane (APTES) as a linker molecule combined with the gold nanoparticles (GNPs) on thermally oxidized SiOthin films. The SiOthin ... -
Characterisation, analysis and optical properties of nanostructure ZnO using the sol-gel method
Muhammad, Kashif; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali; Syed Muhammad Usman, Ali; Willander, Magnus, Prof (Institution of Engineering and Technology (IET), 2012-02)Nanostructure ZnO was grown on thin aluminium layer, deposited on silicon substrate using the sol-gel method. The surface morphologies of nanostructure ZnO at different precursor concentrations were studied using scanning ... -
Characteristics of nanostructure silicon photodiode using laser assisted etching
Naser Mahmoud, Ahmed, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr.; Alwan, M. Alwan; Ghassan Ezzulddin, Arif; Allaa A., Jabbar (Elsevier B.V., 2013)We prepared nanostructures silicon photodiode (nPSi) by using laser assisted etching at fixed current density (30 mA/cm2) with different etching wavelengths of laser diode (532, 650 and 810 nm), a (metal/nanostructure ... -
Computational simulation of ultraviolet ZnO diode laser
Ouerdane, A.; Bouslama, M'Hamed; Abdellaoui, A.; Ghaffour, M.; Yarub, Al-Douri, Assoc. Prof. Dr. (IOP Publishing Ltd, 2013)This article deals with a mathematical technique for the study of functionality of semiconductor laser, by its rate equations, to be used in the simulation of high speed optical systems. We describe the development of ... -
Confirmation of bulk modulus model of III-V compounds under pressure effect using tight-binding method
Yarub, Al - Douri (Elsevier GmbH, 2012-06)The electronic band structure for GaAs, GaSb and GaP is studied using semi-empirical tight-binding sp 3s* method for tetrahedrally coordinated cubic materials. By means of our empirical model, the structural property of ... -
Density functional study of optical properties of beryllium chalcogenides compounds in nickel arsenide B8 structure
Yarub, Al - Douri; Baaziz, H.; Charifi, Z.; Ali Hussain, Reshak, Prof. Dr. (Elsevier B.V., 2012-02-01)The structural, electronic and optical properties of beryllium chalcogenides BeS, BeSe and BeTe using the full-potential linear augmented plane wave (FP-LAPW) method are investigated. The exchangecorrelation energy within ... -
Effect of roughness of hypo-and hyper-eutectic Al-Si piston alloy on wear characteristics under lubrication
Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)The tribological behavior of tow Al-Si alloys under the influence of surface roughness average was investigated for the present study. The silicon content of these alloys ranged 10 and 16-wt% Si, and includes hypoeutectic ... -
Elastic and thermodynamic properties of ZnSc2S4 and CdSc2S4 compounds under pressure and temperature effects
Abdelmadjid, Bouhemadou; Gökay, Uǧur; Şule, Uǧur; S., Al-Essa; Mohamed Amine, Ghebouli; Rabah, Khenata, Prof. Dr.; Saad, Binomran; Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)Results of ab initio calculations of the lattice parameter, elastic constants and some thermodynamic parameters in a wide range of pressures and temperatures are reported for the ZnSc2S4 and CdSc 2S4 cubic spinels. The ... -
Electronic and optical properties of (Al xGa 1-x) 1-yMn yAs single crystal: A new candidate for integrated optical isolators and spintronics
Merabet, Boualem; Yarub, Al-Douri, Prof. Dr.; Abid, Hamza; Ali Hussain, Reshak, Prof. Dr. (Springer Science+Business Media, LLC, 2013-01)We have explored the electronic and optical properties of cubic (Al x Ga1-x )1-y Mn y As system using the FP-LAPW method. The unit cell has 64 atoms, so that one manganese (Mn) atom is placed in the position of gallium ... -
Evaluate the effects of various surface roughness on the tribological characteristics under dry and lubricated conditions for Al-Si alloy
Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Scientific Research Publishing Inc. All rights reserved., 2012-07)The effect of surface roughness average of hypereutectic aluminum silicon alloys (with 16 wt% Si) on the friction and wear was investigated. Various surface roughness average (Ra) of different degrees was verified as well ... -
First-principle calculations to investigate the elastic and thermodynamic properties of RBRh 3 (R =Sc, y and La) perovskite compounds
Litimein, F.; Khenata, R.; Bouhemadou, Abdelmadjid; Yarub, Al-Douri, Prof. Dr.; S., Omran (Taylor and Francis Group, 2012-01-20)We have performed first-principle calculations using the full-potential linear augmented plane wave (FP-LAPW) method within density functional theory (DFT) to investigate the structural, elastic and thermodynamic properties ... -
First-principles calculations to investigate optical properties of B yAl xIn 1-x-yN alloys for optoelectronic devices
Yarub, Al - Douri; Merabet, B.; Abid, H.; Khenata, R. (Elsevier Ltd., 2012-03)First-principles density-functional theory of Full-Potential Linear Augmented Plane Wave (FP-LAPW) within local density approximation (LDA) of the optical properties of B yAl xIn 1- x-yN systems (with x = 0.187 and y = ... -
FP-LMTO method to calculate the structural, thermodynamic and optoelectronic properties of SixGe1-xC alloys
Mohammed Ameri; N., Bouzouira; Rabah, Khenata, Prof. Dr.; Yarub, Al-Douri, Assoc. Prof. Dr.; Bachir, Bouhafs; Saad, Binomran (Taylor & Francis, 2013-11)The structural and electronic properties of the ternary Si xGe1-xC alloys have been calculated using the full-potential linear muffin-tin-orbital (FP-LMTO) method based on density functional theory within both local density ... -
Further optical properties of CdX (X¼ S, Te) compounds under quantum dot diameter effect: Ab initio method
Yarub, Al - Douri; Baaziz, H.; Charifi, Z.; Khenata, R.; Uda, Hashim, Prof. Dr.; Al-Jassim, M. (Elsevier Ltd., 2012-09)For energy band calculations, the indirect energy gap (G X) is calculated using density functional theory (DFT) of the full potential-linearized augmented plane wave (FP-LAPW) method as implemented in WIEN2K code. The ... -
Influence of current density on porous silicon characteristics
Husnen R., Abd; Naser Mahmoud, Ahmed, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr. (Trans Tech Publications, 2013)Porous silicon structures have been fabricated by electrochemical etching using different current density. From field emission scanning electron microscope images (FE-SEM) it was observed that more uniform distribution of ... -
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 ... -
Investigated stiffness of high performance superconductivity with nanoceria incorporated into polycrystalline magnesium diboride
Yarub, Al - Douri; Ghairabeh, M.; Albiss, B. A.; Ali Hussain, Reshak, Prof. Dr. (The Institution of Engineering and Technology, 2012-08)Polycrystalline MgB 2 was prepared with different amounts of nano-sized CeO 2 inclusions, subjected to X-ray diffraction, scanning electron microscopy and atomic force microscopy characterisation. The nano-CeO 2 inclusions ... -
Investigation of the optical properties of Mg(OH)2 and MgO nanostructures obtained by microwave-assisted methods
Al-Gaashani, R.; Radiman, S.; Yarub, Al - Douri; Tabet, N.; Daud, A. R. (Elsevier B.V., 2012-04)Two simple methods for the synthesis of Mg(OH)2 nanostructures, MgO nanoflakes and MgO/Mg(OH)2 nanocomposite using a conventional microwave oven are reported. The first method includes the preparation of Mg(OH)2 by a simple ... -
Modeling of structural properties of hexagonal semiconductors
Ghassan E., Arif; Farah Aini, Abdullah, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)Bulk modulus of hexagonal structure semiconductors are calculated by using density functional theory (DFT) of full-potential linear augmented plane wave (FP-LAPW) within general gradient approximation (GGA). In this work, ...