Table of content

Iraqi Journal of Applied Physics

المجلة العراقية للفيزياء التطبيقية

ISSN: 18132065 23091673
Publisher: iraqi society for alternative and renewable energy sources and techniques
Faculty:
Language: English

This journal is Open Access

About

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, Computers Networks and Applications.

Loading...
Contact info

P. O. Box 55259,
Baghdad 12001,
Iraq
Website: www.iraqiphysicsjournal.com
Email: admin@iraqiphysicsjournal.com
Email: editor_ijap@yahoo.co.uk

Table of content: 2017 volume:13 issue:3

Article
Iraqi Journal of Applied Physics
المجلة العراقية للفيزياء التطبيقية

Loading...
Loading...
Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, and Computers and Networks.


Article
Preparation and Characterization of Silicon Nitride Nanostructures Prepared by DC Reactive Sputtering Technique with Novel Design of Closed-Field Unbalanced Dual Magnetron Assembly

Loading...
Loading...
Abstract

In this work, novel design of closed-field unbalanced dual magnetrons system was employed in a DC reactive sputtering system to prepare silicon nitride nanostructures. Two types of silicon wafers (n- and p-type) were sputtered in presence of nitrogen gas to deposit nanostructured silicon nitride thin films on glass substrates. The prepared nanostructured were polycrystalline with six dominant crystal planes: (101), (110), (200), (232), (301) and (321). The surface roughness of the sample prepared at inter-electrode distance of 4cm was higher than other samples prepared at smaller or larger distances and the average and R.M.S roughness were 0.777 and 1.03 nm, respectively. The nanoparticles of minimum size of 30nm were formed and recognized as individual accumulated particles. Two bands of significant absorption were observed around 960 and 1086 cm-1, those are attributed to the Si-N-Si vibration mode in Si3N4 molecule. An absorption peak was observed at 389nm, which is attributed to the quantum size effect of nanostructures. The refractive index of the prepared Si3N4 samples was determined to be 1.38-2.1 and the energy band gap was ranging in 5.1-5.2 eV. The energy band gap was found to increase with decreasing thickness of the prepared film. The wide energy band gap of Si3N4 nanostructures makes them good candidate, as similar as AlN, BN and GaN, for power electronics and optoelectronics operating at high temperatures.


Article
Characterization of Pulsed-Laser Deposited CuO-Doped MgO Thin Films for Gas Sensing Applications

Authors: Fuad T. Ibrahim
Pages: 13-17
Loading...
Loading...
Abstract

In this work, pure and doped magnesium oxide (MgO) thin films doped with different concentrations (0.05, 0.07 and 0.1 wt.%) of copper oxide (CuO) were deposited on glass substrates by pulsed-laser deposition technique to fabricate gas sensors. The x-ray diffraction (XRD) patterns of prepared MgO:CuO nanostructures exhibit that the films are polycrystalline with tetragonal rutile phase for MgO and monoclinic phase for CuO. The transmittance and energy gap of all prepared samples were decreased while the absorption coefficient was increased with increasing CuO content. The effects of varying operation temperature of the fabricated gas sensors on sensor sensitivity and response time were studied. Maximum sensitivity of about 99.34% was determined for pure MgO.


Article
IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, April 15-18, 2018, Wuhan, CHINA
مؤتمر IEEE الدولي حول التوصيلية الفائقة التطبيقية والنبائط الكهرومغناطيسية

Authors: IEEE
Pages: 18-18
Loading...
Loading...
Abstract

IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, April 15-18, 2018, Wuhan, CHINA


Article
Antibacterial Activity of Gold and Silver Nanoparticles against Pathogen Species, E. coli and S. aureus

Loading...
Loading...
Abstract

Gold and silver nanoparticles (NPs) have been prepared by pulsed laser ablation in liquid (PLAL) operated at 532 nm wavelength with energy density about 17 J/cm2 and 10 J/cm2 for gold (Au) and silver (Ag), respectively, immersed in aqueous solvent with addition 5 mM sodium dodecyl sulfate (SDS) as surfactant. Transmission electron microscopy (TEM) revealed the spherical shape morphology of Ag nanoparticles and Au nanoparticles in the presence of surfactant and grain size of the Ag nanoparticles and Au nanoparticles was found to vary between 20 and 100 nm. Absorption spectra of Au and Ag colloidal confirmed the formation of nanoparticles and improve the addition of (SDS) as surfactant during PLAL method. Finally, the antibacterial activity of Au and Ag nanoparticles against bacterial species E. coli and S. aureus demonstrates that these nanoparticles were more active against Gram negative bacteria than Gram positive bacteria and this was attributed to change in the bacterial cell membranes composition.


Article
Analysis and Simulation of Carrier Transport in InP-Based Double Heterojunction Photoelectronic Device

Authors: Cheng Zeng Li
Pages: 23-28
Loading...
Loading...
Abstract

In this study, the carrier transport in InGaAs/InP double heterojunction (DHs) devices was simulated and analysed by Monte Carlo modelling. It was shown that direct modifications to the definitions of common emitter gain and base transit time r-establish the first order validity of simple analytical models of phototransistor performance based on carrier diffusion. The available evidence indicates that the correction is small, even in very narrow bases, if the base doping is high (NB ~51019 impurities/cm3). Although the corrections to the base and c-b depletion layer transit times are large, the impact on estimates of ft by simple theory is small owing to the dominance of RC time constants.


Article
Extra Val Function for the Theoretical Sensing of Ultraviolet Light and Temperature Produced by Fluorescein-Filled Photonic Crystal Fiber

Authors: Maysam T. Al-Obaidi
Pages: 29-34
Loading...
Loading...
Abstract

This work focuses on the construction of a mathematical model for the simulation of simultaneous ultraviolet and temperature monitoring. The model was constructed based on the parameters of a typical structure that is composed of a photonic crystal fiber (PCF) filled with fluorescein dissolved in water and spliced between two conventional multimode fibers. This work is based on an investigation published in Optical Fiber Technology (2016). The mathematical model has been tested and verified to obtain a good match with previous results using the extra val function. In this work, the pH factor, temperature, and excitation power were simulated to estimate the output emission spectrum and corresponding wavelength. The simulation process enabled by the mathematical model will provide theoretical measurements that can be used in sensing applications as a theoretical PCF sensor.


Article
IJAP Copyright Release Form
استمارة نقل حقوق النشر والتوزيع للمجلة العراقية للفيزياء التطبيقية

Authors: Editorial Board
Pages: 35-35
Loading...
Loading...
Abstract

We, the undersigned, the author/authors of the article that is submitted to the Iraqi Journal of Applied Physics (IJAP) for publication, declare that we have neither taken part or full text from any published work by others, nor presented or published it elsewhere in any other journal. We also declare transferring copyrights and conduct of this article to the Iraqi Journal of Applied Physics (IJAP) after accepting it for publication. The authors will keep the following rights: 1. Possession of the article such as patent rights. 2. Free of charge use of the article or part of it in any future work by the authors such as books and lecture notes after informing IJAP editorial board. 3. Republishing the article for any personal purposes of the authors after taking journal permission. To be signed by all authors


Article
Iraqi Journal of Applied Physics
المجلة العراقية للفيزياء التطبيقية

Authors: Editorial Board
Pages: 36-36
Loading...
Loading...
Abstract

IRAQI JOURNAL OF APPLIED PHYSICS Volume (13), Issue (3), July-September 2017 CONTENTS Instructions to Authors 2 Preparation and Characterization of Silicon Nitride Nanostructures Prepared by DC Reactive Sputtering Technique with Novel Design of Closed-Field Unbalanced Dual Magnetron Assembly 3-12 F.J. Kadhim, M.K. Khalaf, O.A. Hammadi Characterization of Pulsed-Laser Deposited CuO-Doped MgO Thin Films for Gas Sensing Applications 13-17 F.T. Ibrahim IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, April 15-18, 2018, Wuhan, CHINA 18 Antibacterial Activity of Gold and Silver Nanoparticles against Pathogen Species, E.coli and S.aureus 19-22 O.N. Salma, M.O. Dawood, D.S. Ahmed Analysis and Simulation of Carrier Transport in InP-Based Double Heterojunction Photoelectronic Device 23-28 C.Z. Li Extra Val Function for the Theoretical Sensing of Ultraviolet Light and Temperature Produced by Fluorescein-Filled Photonic Crystal Fiber 29-34 M.T. Al-Obaidi IJAP Copyright Release Form 35 Contents 36

Table of content: volume: issue: