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.

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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: 2013 volume:9 issue:3

Article
Iraqi Journal of Applied Physics

Pages: 1-2
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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, and Solid State Physics & Applications.

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Article
Fundamentals of Microwave Integrated Circuits Based on High-Temperature Superconductors

Authors: M.M. Shakir --- B.N. Qazi --- R.A. Mardshah
Pages: 3-9
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Abstract

A brief review is given of recent publications showing that the applications of high-temperature superconductors (HTS) in microwave technologies have become an integral part of industrial business. The basic components of microwave devices are HTS epitaxial films on dielectric substrates. It is shown that the properties of interfaces between the substrates and HTS films are crucially important for obtaining high-quality HTS films. The change of the structure in the process of film growth is related to the initial stage of HTS nucleation at the interface between the substrate and the film. The film surface resistance at microwave frequencies depends on the HTS film structure. It is known that one can decrease the surface resistance, which will permit designing higher-quality microwave-microelectronics components to operate at cryogenic temperatures by improving the film structure. A discussion is given how to improve the HTS film microwave properties to make possible industrial production of high-performance HTS devices and subsystems.


Article
A High-Performance Silicon-Based Plasmonic Modulator

Authors: R. Ma --- X. Zhang
Pages: 10-12
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Abstract

Photonic integrated circuits could be scaled down for future optical communication applications with the help of a new wavelength-scale modulator.

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Article
Synthesis of Antimony Oxide Nanoparticles by Pulsed Laser Ablation in Wet Media

Authors: W.K. Khalef
Pages: 13-16
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Abstract

In this work, antimony oxide (Sb2O3) nanoparticles were directly synthesized by pulsed laser ablation of an antimony (Sb) plate placed on the bottom of quartz vessel containing 3ml of ultra pure double distilled deionized water (DDDW). The piece of metal was irradiated by focused energy of 500 mJ Nd:YAG laser (1064 nm) pulses at different shots (50, 70 and 120 pulses). The influence of the number of laser pulses on the formation and characterization of the formed nanoparticles were studied throughout AFM and XRD measurements, in combination with UV–Visible spectroscopy. Also, the effects of operating parameters on nanoparticles composition, production rate and size were studied. The XRD measurements revealed crystallization structure of Sb2O3 nanoparticles. The UV–Visible spectrum of the colloidal nanoparticles shows maximum absorbance around the UV region, which indicates the formation of Sb2O3 nanoparticles of energy band gap of about 2.8, 2.9 and 3.1 eV for laser shots of 50, 70 and 120 pulses, respectively. The particle diameter was determined by Scherer's equation to be about 59 nm.


Article
Introducing New Optical Functions to Semiconducting Carbon Nanotubes

Authors: Y. Kanemitsu
Pages: 17-18
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Abstract

Carrier doping in single-walled carbon nanotubes enables manipulation of their optical spectra and dynamics and provides a possible route toward quantum computing.

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Article
Design of All-Reflecting Aplanatic Objective

Authors: M.S. Ahmed
Pages: 19-22
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Abstract

Laser beam aiming and narrow field imaging systems usually incorporate aplanatic objectives, preferably reflective. Two examples of two-reflector objective namely the Gregorian and Cassegrainian are considered. The work herein is aiming at determining the aspheric profiles of the two reflectors so as to attain aplanatism. Detailed discussion on the Cassegrainian objective and derivation of equations of its aspherics are given. The work can be extended to deal with the design of reflective objectives convenient to ultra-violet microscopy.


Article
Folding Photonic Nanostructures

Authors: D. Gracias
Pages: 23-24
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Abstract

An electron beam lithography and plasma etching process enables hands-free folding of functional metal-patterned dielectric structures with nanoscale dimensions.

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Article
Characterization of Low-Pressure Argon and Nitrogen Discharge Plasmas Using Electrical Floating Probe Method

Authors: M.A.K. Ahmed --- A.S. Jasim --- K.I. Khaleel
Pages: 25-28
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Abstract

In this work, a low-pressure dc-discharge plasma is characterized by electrical floating probe method. To get sufficient working conditions for plasma electrical probe, a sweep voltage power supply was built. The plasma generation chamber was used to produce glow-discharge using nitrogen and argon gases at pressures of 0.03, 0.07 and 0.1 mbar. The current-voltage characteristics were performed using plasma probe and some calculations, such as electron temperature, plasma frequency and plasma species density, were carried out. The results obtained from I-V curve showed that electron temperature for argon and nitrogen plasmas was increased by increasing gas pressure.


Article
Improved chemical sensors track and control emissions

Authors: A.L. Spetz
Pages: 29-30
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Abstract

Sensitive, low-cost silicon carbide-based gas sensors can detect toxic emissions and hazardous nanoparticulate matter in previously untenable environments.

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Article
Theoretical Treatment to Determine the Quality of Photonic Crystal Fiber (PCF) as a Function of the Number of Air Holes

Authors: R.M. Taha --- F.A. Sabah
Pages: 31-35
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Abstract

In this paper, the design of photonic crystal fiber (PCF) depending on the number of holes and rings is presented. Three different types of PCF will be assumed. The effect of increasing number of holes was explained using the relations between chromatic dispersion (Dc), loss, bit error rate (BER) and pitch (ᴧ) for wavelength interval 1-2µm and three fiber lengths (50, 100 and 200 km). These relations were plotted using MATLAB-2008 software. The obtained results showed that the 3rd PCF with the highest number of holes has provided better quality than the other two types of PCF.


Article
Quantifying Inhomogeneities in Silicon-Rich Oxide Thin Films

Authors: M. Ivanda
Pages: 36-38
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Abstract

Spectroscopic techniques can be used to estimate structural inhomogeneities in silicon oxide thin films.

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Article
Iraqi Journal of Applied Physics

Pages: 39-40
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Abstract

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