mohamed.mohamed4

Assoc. Prof. Mohammed Hammad Mohammed Fawey

Assistant Professor - Lecturer

Faculty of science

Address: Physics Department - Faculty of Science - Sohag University, Sohag, Egypt

4

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2024 | Keywords Atmospheric pressure plasma,
Water desalination using atmospheric pressure plasma combined with thermal treatment
Herein, a novel method is presented for enhancing the thermal desalination process of saline water and seawater using atmospheric pressure plasma (APP). The efect of APP treatment combined with thermal heating (APP-TH) on the energy consumption, conductivity, and pH of seawater and saline water is investigated. Utilizing scanning electron microscopy and X-ray difractometry, the evolution of the morphology, structure, and ... Read more

2023 | Keywords Superconductivity,
Superconductivity of Li doped BSCCO mesoscopic fiber
Mesoscopic Li doped BSCCO fibres are synthesized by the electrospinning technology and the sequent sintering treatment. With the assistance of high resolution energy-dispersive x-ray spectroscopy detector in the Aberration-corrected transmission electron microscopy, we discovered hidden CuO grains and separated Bi-2212 phases, which is proved by the existence of fishtail effect in the magnetization loops. The electric measurement is fulfilled via ... Read more

2023 | Keywords Nitriding; Carbonitriding,
Effect of Triple Treatment on the Surface Structure and Hardness  Effect of Triple Treatment on the Surface Structure and Hardness of 304 Austenitic Stainless Steel  of 304 Austenitic Stainless Steel
Nitriding, annealing, and carbonitriding processes are conducted to modify the surface of AISI 304 austenitic stainless steel via radio frequency plasma. A ~20 μm thick nitride layer is obtained in ten minutes at a plasma power of 450 W. Hence, all nitrided samples are annealed under vacuum for one hour at 400 ˚C. The nitrided-annealed samples are carbonitrided via the ... Read more

2021 | Keywords Graphene oxide (GO),
The effective reduction of graphene oxide films using RF oxygen plasma treatment
Graphene Oxide (GO) has attracted strong research interest due to its unique mechanical, thermal, electrical, and magnetic properties. Herein, a simple oxygen plasma process is used as an eco-friendly, novel and effective surface treatment technique to enhance the microstructure, adhesion force, and electrical properties of the GO films. GO films were treated in a plasma oxygen environment at a constant ... Read more

2021 | Keywords Graphene Oxide Films,
Study on Enhancement of Adhesion Force and Surface Conductivity of Graphene Oxide Films using Different Solvents
In this work, the nanotechnology procedure was utilized to improve both the adhesion force and surface properties of graphene oxide (GO) films. GO has been obtained in a powder form by oxidation purified graphite using the modified Hummer’s technique. Different films of GO nanoparticles (NPs) were deposited using several types of solvents distilled water, acetone, ethanol, dimethylformamide (DMF) or ethylene ... Read more

2021 | Keywords RF oxygen plasma,
Cold RF oxygen plasma treatment of graphene oxide films
Oxygen radio-frequency (RF) plasma technique is one of the most novel directions used to improve the physical and chemical properties of graphene oxide (GO). Herein, plasma treatment is used to enhance the chemical functionalization and reduced levels of the GO material for electronic and solar cell applications. GO films were chemically synthesized with high quality and uniformity. Then, they exposed ... Read more

2020 | Keywords Magnetoelectric core–shell,
First-time synthesis of a magnetoelectric core–shell composite via conventional solid-state reaction
In recent years, multiferroics and magnetoelectrics have demonstrated their potential for a variety of applications. However, no magnetoelectric material has been translated to a real application yet. Here, we report for the first time that a magnetoelectric core–shell ceramic, is synthesized via a conventional solid-state reaction, where core–shell grains form during a single sintering step. The core consists of ferrimagnetic ... Read more

2020 | Keywords fluoride ion batteries,
First results from in situ transmission electron microscopy studies of all-solid-state fluoride ion batteries
A focused ion beam (FIB) system is used to fabricate a micron-sized all-solid-state fluoride ion cell from a bulk battery for in situ transmission electron microscopy (TEM) testing. The bulk battery is based on a La0⋅9Ba0⋅1F2.9 solid-state electrolyte with a nanocomposite of Cu/C as a cathode and a nanocomposite of MgF2, Mg, La0⋅9Ba0⋅1F2.9 and C as an anode. The evolution ... Read more

2020 | Keywords Surface Conductivity,
Enhancement of Adhesion Force and Surface Conductivity of Graphene Oxide Films Using Different Solvents
In this work, the nanotechnology procedure was utilized to improve both the adhesion force and surface properties of graphene oxide (GO) films. GO has been obtained in a powder form by oxidation purified graphite using the modified Hummer stechnique. Different films of GO nanoparticles (NPs) were deposited using several types of solvents distilled water, acetone, ethanol, dimethyl formamide (DMF) or ... Read more

Effect of UV-activated TiO2 Nanoparticles on the Properties and Performance of PAni-TiO2 Nanocomposite Films for Solar Cell Applications
To improve the performance of organic solar cells by enhancing the properties of the photoactivated nanocomposite layer, the UV irradiation process was used to activate titanium dioxide nanoparticles (TiO2 NPs). Herein, polymer solar cells were fabricated with FTO/(PAni-TiO2)/Ag system. A series of mixed polyaniline (PAni) with 20% of activated TiO2 NPs at different processing times was used to form PAni-TiO2 ... Read more