A. M. El‐naggar

ORCID: 0000-0001-5108-0061
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About
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Research Areas
  • Polymer Nanocomposite Synthesis and Irradiation
  • Conducting polymers and applications
  • Chalcogenide Semiconductor Thin Films
  • Polymer Nanocomposites and Properties
  • Nonlinear Optical Materials Studies
  • Quantum Dots Synthesis And Properties
  • Dielectric materials and actuators
  • Solid-state spectroscopy and crystallography
  • Phase-change materials and chalcogenides
  • ZnO doping and properties
  • Perovskite Materials and Applications
  • Synthesis and biological activity
  • Synthesis and Characterization of Heterocyclic Compounds
  • Magnetic Properties and Synthesis of Ferrites
  • Transition Metal Oxide Nanomaterials
  • Nonlinear Optical Materials Research
  • Copper-based nanomaterials and applications
  • Advanced Sensor and Energy Harvesting Materials
  • Thin-Film Transistor Technologies
  • Laser-Ablation Synthesis of Nanoparticles
  • Multiferroics and related materials
  • Optical and Acousto-Optic Technologies
  • Glass properties and applications
  • Solid State Laser Technologies
  • Photorefractive and Nonlinear Optics

King Saud University
2016-2025

Imperial College London
2024

Ain Shams University
2013-2023

Al-Azhar University
1974-2023

Egyptian Consulting & Trading Co. Ltd
2023

Military Technical College
2020

Cairo University
2007-2016

Częstochowa University of Technology
2015

North Carolina State University
2005

National Water Research Center
1999-2003

Herein, polymethyl methacrylate (PMMA)/ polyethylene oxide (PEO) blend doped with nanocomposite (1 − x) ZnMn2O4/xCdS samples were prepared through two steps, the first comprising synthesizing, while second was incorporation of nanocomposites into matrix, and finally films obtained casting solution method. Various techniques, such as X-ray diffraction, scanning electron microscopy, diffused reflection impedance spectroscopy used to determine change in PMMA/PEO structure after inclusion...

10.1016/j.rinp.2024.107323 article EN cc-by-nc-nd Results in Physics 2024-01-01

The emergence of micro/nanorobotics stands poised to revolutionize various biomedical applications, given its potential offer precision, reduced invasiveness, and enhanced functionality. In the face such potential, understanding mechanisms that drive these tiny robots, especially their actuation techniques, becomes critical. Although there is a surge in research dedicated micro/nanorobotics, exists gap consolidating diverse strategies suitability for applications. This comprehensive review...

10.1002/smsc.202300211 article EN cc-by Small Science 2024-02-02

Undoped and doped polyvinyl pyrrolidone/ carboxymethyl cellulose (PVP/CMC: 50/50%) blended polymers with melanin were formed. X-ray diffraction analysis confirmed the amorphous nature of all blends. Scanning electron microscopy results smooth homogeneous surface undoped PVP/CMC blend melanin. The optical parameters fluorescence spectra investigated as functions content. direct band gap (Eg) for used is 2.86 eV. indirect Eg values are 5.1 (4.9, 3.2) eV, respectively. reduced to (4.5, 3.23)...

10.1080/16583655.2023.2190731 article EN cc-by Journal of Taibah University for Science 2023-03-27

Abstract Polyvinyl alcohol (PVA)/polyvinylpyrrolidone (PVP; weight 7:3) polymer blends doped with different ratios (1 wt%, 3 5 and 10 wt%) from nano SnS 2 /Fe are developed using casting thermolysis procedures. Rietveld analysis showed that Fe is incorporated into the lattice forming a single hexagonal phase an average crystallite size of 6 nm along [00 l ] direction 15 [ h 00] direction. X‐ray diffraction together Fourier transform infrared data used to examine homogeneity distribution...

10.1002/vnl.21868 article EN Journal of Vinyl and Additive Technology 2021-10-05

The most efficient way to create novel materials that may be used in a variety of optoelectronic applications is thought doped mixed polymers with appropriate fillers. Undoped and PVC ZnS/Mn formed at different temperatures were fabricated using the casting method. Rietveld method was discover structure microstructure Zn0.95Mn0.05S prepared T = 300, 400, 500 °C. distribution existence nanofiller over matrix determined via XRD, FTIR, EDS, SEM techniques. effect preparation on absorption,...

10.3390/polym15092091 article EN Polymers 2023-04-27

Polyvinyl alcohol (PVA)/0.25% polyaniline (PANi)/x wt % MWCNTs (x = 0, 0.1, 0.2, 0.5, 0.8, 1) blends were formed. The X-ray diffraction technique was used to investigate the formation of different blends. effects amounts on optical parameters and emitted colours investigated. band gaps for PVA/0.25% PANi/x are 3.24, 3.13, 3.05, 2.99, 2.84, 2.95 eV when in become 0.0, 1 %, respectively. modifications upon loading PVA/ PANi with indicated that investigated promising candidates solar cell...

10.1080/16583655.2023.2207769 article EN cc-by Journal of Taibah University for Science 2023-05-02
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