اسراء عدنان عبد الله
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Esraa Adnan Abdullah
PhD
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lecturer
College of Science
,
Department of Physics
[email protected]
Publication Date
Tue Mar 17 2020
Journal Name
Optical And Quantum Electronics
(23)
(5)
Publication Date
Tue Jul 11 2023
Journal Name
Laser Physics
Tunneling induced swapping of orbital angular momentum in a quantum dot molecule
Abstract<p>In this paper, we have examined the effectiveness exchange of optical vorticity via three-wave mixing (TWM) technique in a four-level quantum dot (QD) molecule by means of the electron tunneling effect. Our analytical analysis demonstrates that the TWM procedure can result in the production of a new weak signal beam that may be absorbed or amplified within the QD molecule. We have taken into account the electron tunneling as well as the relative phase of the applied lights to assess the absorption and dispersion characteristics of the newly generated light. We have discovered that the slow light propagation and signal amplification can be achieved. Our results show that the exchange o</p>
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(4)
Publication Date
Tue Jan 01 2019
Journal Name
Optical And Quantum Electronics
(72)
Publication Date
Fri Feb 01 2019
Journal Name
Physica B: Condensed Matter
(26)
(4)
Publication Date
Thu Apr 18 2019
Optimization of Rutile/Anatase Ratio in Titanium Dioxide Nanostructures prepared by DC Magnetron Sputtering Technique
TiO2
Thin Film
Mixed-Phase TiO2
Photocatalysis
DC Magnetron Sputtering Technique
Mixed phase rutile/anatase of TiO2 was prepared and studied by a closed field DC magnetron sputtering configuration (CFDCMS). It was found that the contents of rutile increased from the ratio of 38% to 53% as the deposition time increased from 3.5 hours to 4.5 hours.
The photocatalytic activity of the mixed phase rutile/anatase TiO2 was measured by monitoring the degradation of the blue methylene dye in an aqueous solution, under exposure to UV-radiation, using UV-vis absorption spectroscopy. It was proven that the photocatalytic activity in the mixed phase (TiO2) is a function of rutile content reaching a maximum value at 53% rutile. Thus, the effect of synergy between anatase- TiO2 and rutile- TiO2 was observed. It was observed that
Publication Date
Mon Sep 22 2025
Journal Name
Iraqi Journal Of Applied Physics
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