Browsing Institute of Nano Electronic Engineering (INEE) (Articles) by Author "Yarub, Al-Douri, Assoc. Prof. Dr."
Now showing items 1-20 of 28
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An ab initio density functional study of the optical functions of 9-Methyl-3-Thiophen-2-YI-Thieno [3,2e] [1,2,4] Thriazolo [4,3c] Pyrimidine-8-Carboxylic Acid Ethyl Ester crystals
Ali Hussain, Reshak, Prof. Dr.; Kityk, Iwan V.; Rabah, Khenata, Prof. Dr.; Yarub, Al-Douri, Assoc. Prof. Dr.; Auluck, Sushil, Dr. (Elsevier B.V., 2012-09)An ab initio investigation of the optical constants of 9-Methyl-3-Thiophen- 2-YI-Thieno [3,2e] [1,2,4] Thriazolo [4,3c] Pyrimidine-8-Carboxylic Acid Ethyl Ester crystal is performed within a framework of local density ... -
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 ... -
Differential equations to calculate the ionicity factor of hexagonal structure semiconductors
Ghassan E., Arif; Yarub, Al-Douri, Assoc. Prof. Dr.; Farah Aini, Abdullah, Dr.; Rabah, Khenata, Prof. Dr. (Elsevier Ltd., 2013)New mathematical models based on analytical expression and differential equations are established. The work aims to model ionicity factor based on energy gap of hexagonal structure semiconductors using density functional ... -
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 ... -
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 ... -
External temperature and pressure effects on thermodynamic properties and mechanical stability of yttrium chalcogenides YX(X=S, Se and Te)
Seddik, T.; Rabah, Khenata, Prof. Dr.; Abdelmadjid, Bouhemadou; Guechi, N.; Sayede, Adlane D.; Varshney, Dinesh; Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Bin-Omran, S. (Elsevier B.V., 2013)The full potential linearized augmented plane wave method within the framework of density functional theory is employed to investigate the structural, thermodynamic and elastic properties of the yttrium chalcogenides (YX: ... -
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 ... -
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 ... -
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, ... -
Morphology, analysis and properties studies of CdS nanostructures under thiourea concentration effect for photovoltaic applications
Yarub, Al-Douri, Assoc. Prof. Dr.; Jamal H., Waheb; Mohammed Ameri; Khenata, R.; Abdelmadjid, Bouhemadou; Ali Hussain, Reshak, Prof. Dr. (Electrochemical Science Group, 2013-08)CdS nanostructures are prepared by sol-gel spin coating method using different thiourea concentrations. The thiourea concentration effect for CdS nanostructures deposited on quartz substrate is studied. The CdS nanostructures ... -
Optical properties of GaN nanostructures for optoelectronic applications
Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)Electrochemical deposition method is used to prepare GaN nanostructure. The morphological studies using scanning electron microscopy (SEM), photoluminescence (PL) the refractive index and optical dielectric constant are ... -
Optoelectronic properties of GaAs and AlAs under temperature effect
Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Uda, Hashim, Prof. Dr. (Elsevier GmbH, 2013-08)An application study of optoelectronic properties as a function of the temperature for GaAs and AlAs according to our model has been presented using empirical pseudopotential method (EPM). The structural phase transition ... -
Structural and morphological studies of cadmium sulfide nanostructures
Abdulwahab, S. Z. Lahewil; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Naser Mahmoud, Ahmed, Dr. (Trans Tech Publications, 2013)Cadmium sulfide (CdS) nanostructures were prepared with different spin coating speed 1000 and 3000 rpm and molarities of Cd:S to be 1.2 to 0.01 mol/L using sol-gel spin coating technique. It is found that the average grain ... -
Structural and optical investigations of cadmium sulfide nanostructures for optoelectronic applications
Abdulwahab, S.Z. Lahewil; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Naser Mahmoud, Ahmed, Dr. (Elsevier Ltd., 2012-11)Cadmium sulfide (CdS) nanostructures were deposited on glass substrates by sol–gel spin coating technique. X-Ray Diffraction (XRD) results have indicated that the formation of CdS has hexagonal structure. The lattice constants ... -
Structural and optical properties of PbI2 nanostructures obtained using the thermal evaporation method
Safaa I. Mohammed; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Naser Mahmoud, Ahmed, Dr.; R., Al-Gaashani (NRC Research Press, 2013-10)Lead iodide (PbI2) nanostructures were successfully prepared using the thermal evaporation method on a glass substrate at room temperature. The structural properties were analyzed using X-ray diffraction, which revealed ...