R. K. Fakher Alfahed

ORCID: 0000-0003-4840-5149
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Research Areas
  • Nonlinear Optical Materials Studies
  • Nonlinear Optical Materials Research
  • Polymer Nanocomposite Synthesis and Irradiation
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Quantum Dots Synthesis And Properties
  • Photochemistry and Electron Transfer Studies
  • Chalcogenide Semiconductor Thin Films
  • Radiation Shielding Materials Analysis
  • Porphyrin and Phthalocyanine Chemistry
  • Analytical Chemistry and Sensors
  • Phase-change materials and chalcogenides
  • Luminescence Properties of Advanced Materials
  • Graphite, nuclear technology, radiation studies
  • Laser-Ablation Synthesis of Nanoparticles
  • Plant Micronutrient Interactions and Effects
  • Thin-Film Transistor Technologies
  • Hybrid Renewable Energy Systems
  • Energy and Environment Impacts
  • Transition Metal Oxide Nanomaterials
  • Supercapacitor Materials and Fabrication
  • Environmental and Analytical Chemistry Studies
  • Advanced biosensing and bioanalysis techniques
  • Synthesis and properties of polymers
  • Protein Interaction Studies and Fluorescence Analysis

Nahrain University
2017-2024

University of Basrah
2015-2021

Abstract Polyvinyl alcohol (PVA) has been prepared as a films with different volume ratios of titanium dioxide (TiO2). Atomic force microscope (AFM) was used to test morphology and grain size the specimen surfaces. The results revealed that surface roughness decreased increasing ratio TiO2 whereas increased. stress-strain curves for TiO2/PVA composite 0%, 0.02%, 0.03%, 0.04% content are characterized. mechanical performance clearly affected according loaded contrast pure film. Furthermore,...

10.1088/1742-6596/1279/1/012019 article EN Journal of Physics Conference Series 2019-07-01

Abstract In the current work of radiology, polymeric sheets PM-355 nuclear track detectors (SSNTDs) were exposed with α-particles and solar radiation for several exposure times. The absorption spectrum samples to sun showed that edge accidentally changed longer wavelengths. An investigation continue waveguide laser effects on nonlinear properties polymer has been done. Non-linear increases increasing levels sunlight is highly connected revealed surface morphology chemical structural...

10.1088/1757-899x/928/7/072056 article EN IOP Conference Series Materials Science and Engineering 2020-11-01

Abstract We report on the observation of thermal lens as well multiple diffraction ring patterns due to irradiation azo dye “1.8-Dihydroxy-naphthalin-3, 6 disulfonic acid [2-(4-Azo)]-N-(5-methyl-3-isoxazolyl)-benzene sulfonamide” at same time by three continuous wave, green (λ=532 nm), red (λ=635 nm) and blue (λ=473 laser beams. This effect we observed power input less than 10 mW for pump 532 nm low 50 μW beams from other two wavelengths. The number rings all is totally controlled level...

10.1088/1757-899x/928/7/072071 article EN IOP Conference Series Materials Science and Engineering 2020-11-01

Nonlinear optical properties, 1HNMR, 13CNMR spectrums and Surface morphology of (2-Hydroxyphenyl) [2-(2-methoxy benzylidene amino)-5-methyl phenyl] telluride are studied by using self - diffraction induced, microscopy Z-scan approach. The non-linear absorption compound was obtained from open aperture behavior for azomethine with polymethyl methacrylate (PMMA) film studied. observation ring patterns due to the irradiation group 473 nm continuous wave (CW) laser irradiation.

10.1063/5.0027845 article EN AIP conference proceedings 2020-01-01

Abstract The concentrations-dependent refractive index n 2 and the nonlinear absorption coefficient β of Ethidium bromide dye-doped deoxyribonucleic acid (biological polymer DNA) solutions in SDL regime at 532 nm are reported. Z-scan technique was performed two ways different wavelengths, 532nm 473nm, open aperture closed technique. From measurements it is found that doped films exhibited reverse saturable absorption. refraction 473nm wavelength greater than 532nm.

10.1088/1742-6596/1963/1/012136 article EN Journal of Physics Conference Series 2021-07-01

Abstract Experimental evolution of the diffraction pattern Bromocresol Purple (BCP) and Congo Red (COGR) Solutions, by ring technique under CW laser illumination is present. The two azo dyes, COGR dye dye, were studied for their absorbance spectra, as well rings experimental. measurement performed when incident beam propagates through a quartz cell containing dye. Many observed on sensitive screen. Among results we obtained are at 0.07mM concentration, where number was 4 power 50 mW three in...

10.1088/1742-6596/1963/1/012013 article EN Journal of Physics Conference Series 2021-07-01

Abstract One of the primary goal current research is to estimate concentration Boron element <?CDATA ${}_{5}{}^{10}\text{B}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="block" overflow="scroll"> <mml:mrow> <mml:mmultiscripts> <mml:mtext>B</mml:mtext> <mml:mprescripts /> <mml:mn>5</mml:mn> <mml:mn>10</mml:mn> </mml:mrow> </mml:mmultiscripts> </mml:math> in soil North Basrah Iraq. The evaluation was achieved by analysing samples obtained from 34 locations using carmine...

10.1088/1742-6596/1294/2/022006 article EN Journal of Physics Conference Series 2019-09-01

This study investigates the digestion of cow dung (CD) for biogas production at laboratory scales. The was carried out through anaerobic fermentation using as substrate. digester operated ambient temperatures 39.5 °C a period 10 days. effect iron powder in controlling hydrogen sulfide (H2S) has been tested. optimum concentration 4g/L with highest production. A Q – swatch Nd:YAG laser used to mix and homogenize components one six digesters accelerate digestion. At end digestion, all...

10.21123/bsj.2018.15.3.0324 article EN cc-by Baghdad Science Journal 2018-09-13
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