Article
Materials Science, Multidisciplinary
W. A. Abd El-Ghany, N. H. S. Nasralla, G. M. El Komy
Summary: In this study, nanostructured copper manganese oxide thin films were prepared using sol-gel method and spray pyrolysis technique. Different Cu acetate/Mn acetate molar ratios were investigated to understand their effects on the structural, morphological and optical properties of the films. The annealed films exhibited a polycrystalline structure and mixed oxide phases, with optical band gap showing a blue shift with increasing Cu acetate ratios.
Article
Optics
A. Q. Alosabi, A. A. Al-Muntaser, M. M. El-Nahass, A. H. Oraby
Summary: The structural and optical properties of disodium phthalocyanine (Na2Pc) thin films prepared using the thermal evaporation method were investigated theoretically and experimentally. The optimized geometry, vibrational bands, and energy gap of the films were predicted by density functional theory (DFT) computations. Structural analysis using FTIR and XRD techniques showed that the thin films had an amorphous structure. UV-Vis-NIR spectrophotometry revealed that the Na2Pc molecules exhibited four absorption bands in the UV-Vis region, and the energy transitions were determined to be indirect allowed. The absorption coefficient and energy gap indicated the potential applications of the Na2Pc thin films in optoelectronic devices. The film thickness did not affect the absorption index and refractive index, which were determined to be independent. The dispersion parameters were evaluated using a single oscillator model in the non-absorbing region.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Shih-Hung Lin, Rong-Hwei Yeh, Chen Chu, Ruei-Sung Yu
Summary: In this study, Mg-doped CuCrO2 thin films were investigated, showing that increasing Mg content led to decreased roughness, increased visible light transmittance, enhanced UV light absorption, and increased band gap of CuCrO2, resulting in significantly improved electrical conductivity. Mg doping effectively increased carrier concentration by replacing Cr3+ with Mg2+, making Mg-doped CuCrO2 a promising optoelectronic semiconductor material.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
A. A. Al-Muntaser, Eman Alzahrani, Hala M. Abo-Dief, Abdu Saeed, Eida M. Alshammari, Amani M. Al-Harthi, A. E. Tarabiah
Summary: Nanocomposite films filled with different concentrations of zinc oxide nanoparticles (ZnO NPs) were created using the solution casting technique. The effect of ZnO NPs on the structural, optical, and electrical features of the films made of polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), and carboxymethylcellulose (CMC) was investigated. The results revealed improvements in electrical and optical properties, making these films potential competitors for optoelectronic devices like sensors.
Article
Materials Science, Multidisciplinary
Salhah H. Alrefaee, Amira Ben Gouider Trabelsi, Ahmed E. Abdelhamid, Azza A. Ward, Wafaa Elsharkawy, Fatemah H. Alkallas, Ayman M. Mostafa, Ameenah N. Al-Ahmadi, Sherif S. Nafee, Rami Adel Pashameah, Ahmed M. Khalil
Summary: Polymer nanocomposites based on recycled polystyrene and polyvinylpyrrolidone with reduced graphene oxide were prepared through a casting technique. Introduction of reduced graphene oxide significantly enhanced the electrical conductivity and dielectric properties of the nanocomposites. The results suggest that these nanocomposites have potential applications in energy storage, electronics, anti-static, and electro-static dissipation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
M. Sh. Zoromba, H. A. Maddah, M. H. Abdel-Aziz, Ahmed F. Al-Hossainy
Summary: In this study, a HCl-doped copolymer of ortho phenylene diamine and meta phenylene diamine was prepared, and microporous structure thin films of hybrid copolymer/ZrO2 nanocomposite were fabricated. The addition of zirconium oxide nanoparticles improved the crystallinity and optical properties of the copolymer. Molecular structure optimization and frequency calculations were performed using computational models, showing good agreement with experimental data. The findings suggest the potential use of hybrid nanocomposite films in polymer solar cell applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Zhihao Liu, Jun Liu, Peng Yin, Yanqi Ge, Omar A. Al-Hartomy, Ahmed Al-Ghamdi, Swelm Wageh, Yuxuan Tang, Han Zhang
Summary: In recent years, there has been significant focus on the investigation of single-element 2D materials, particularly the group IV and group V elements. These materials, known as 2D Xenes, exhibit diverse optical and optoelectronic properties and can be easily integrated with other optical platforms. They have shown promising applications in various photonic devices and offer great potential for further development.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Computer Science, Information Systems
Maria Elena Sanchez Vergara, Lorena Ramirez Vargas, Citlalli Rios, Bertha Molina, Roberto Salcedo
Summary: This study optimized an organic semiconductor through density-functional theory methods, successfully deposited and characterized thin films of ZnQ(2)-TCNQ, investigated their optical properties, and determined the optical bandgap. A flexible photo device was manufactured with the active layer, showing significant changes in electrical behavior under light conditions.
Article
Materials Science, Multidisciplinary
Shubhanshu Agarwal, Kyle Weideman, David Rokke, Kiruba Catherine Vincent, Dmitry Zemlyanov, Rakesh Agrawal
Summary: AgInSe2 is a promising thin-film material with rare n-type conductivity. In this study, we investigated its optoelectronic properties and their dependence on Ag/In ratio and selenium heat-treatment conditions. We deposited AgInSe2 films using a solution-based method and achieved improved photoluminescence through CdS passivation.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Physics, Condensed Matter
Ammar Qasem, Nejla Mahjoub Said, Abeer A. Hassan, H. A. Yakout, E. R. Shaaban
Summary: The pristine manganese selenide (MnSe) thin film was successfully prepared using the vacuum evaporation approach as the initial step, and the tunability of its structural, optical, and electrical characteristics was evaluated through annealing at different temperatures. The annealed films were found to be crystalline, in contrast to the amorphous pristine film. The optical study extracted two energies in Tauc and Urbach regions and explained them using the concept of atomic orbital splitting. The electrical properties were determined using capacitance and conductance pathways.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Polymer Science
Mohamed H. Abdel-Aziz, Mohammed Zwawi, Ahmed F. Al-Hossainy, Mohamed Sh. Zoromba
Summary: A semiconductor thin film of poly(o-phenylene diamine-co-m-phenylene diamine) copolymer [PoPmP] was fabricated via oxidative polymerization in an acidic solution, with a thickness of approximately 150 nanometers. Characterization of the copolymer was performed using various techniques, and its structure and optical properties were measured experimentally and computationally. The results suggest that the thin film shows promising potential as a candidate for polymer solar cell applications, highlighting its electronic transition properties.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Engineering, Electrical & Electronic
Shangjian Zhang, Wei Li, Wei Chen, Yali Zhang, Ninghua Zhu
Summary: This paper reviews the development of optical or electrical measurement methods for characterizing frequency responses of optoelectronic devices. It highlights the importance of accurate calibration standards and addresses the indetermination problem in E/O and O/E device characterization. The transfer of calibration standards from optical to electrical domain is emphasized as a prominent approach to solve this issue.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Review
Materials Science, Ceramics
Deviprasad Sahoo, Ramakanta Naik
Summary: This review focuses on the optical studies of Se doped chalcogenide thin films, discussing theoretical and experimental models, promising photonic applications, and the importance of Se-based chalcogenide materials. It also includes a bibliometric analysis and an overview of the research work in this field.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Nanoscience & Nanotechnology
Elhussein M. Hashem, Mahmoud A. Hamza, Ayat N. El-Shazly, Mohamed F. Sanad, Minatallah M. Hassan, Sameh O. Abdellatif
Summary: A novel ternary nanocomposite of Ag@RGO/ZnO was successfully synthesized using a facile one-pot method at room temperature, which functions as a low-cost, efficient, and reliable UV absorber. The optical characterization showed enhanced light absorption in the UV portion, attributed to the synergetic effect of Ag nanoparticles and RGO nanosheets. Additionally, the band-gap narrowing due to Ag-doping suggests potential applications for this nanocomposite.
Article
Physics, Multidisciplinary
Mohamed R. Eid, Ahmed F. Al-Hossainy
Summary: The [PG-MoS2/ZrO2]C hybrid nanofluid films were fabricated using a sol-gel method, and their structure, flow, and heat transport properties were investigated. The results showed that the addition of ZrO2 nanoparticles enhanced the flow performance and heat transport rate of the nanofluid.
WAVES IN RANDOM AND COMPLEX MEDIA
(2023)
Article
Metallurgy & Metallurgical Engineering
M. H. Elzahaby, S. A. Nosier, G. H. Sedahmed, A. S. Fathalla, M. H. Abdel-Aziz, D. A. El-Gayar
Summary: This study investigated the removal of copper from dilute copper sulfate solution by cementation on a horizontal zinc disc impinged by an axial turbulent unsubmerged jet in a recirculating batch reactor. The effect of different parameters such as initial copper ion concentration, solution velocity, nozzle diameter, and the axial distance between the zinc disc and the unsubmerged jet on the rate of copper ion removal was studied. The results showed that the rate of cementation increased with increasing solution velocity and nozzle diameter, while decreasing the axial distance between the zinc disc and the unsubmerged jet.
CANADIAN METALLURGICAL QUARTERLY
(2023)
Article
Thermodynamics
W. B. Rasslan, M. A. Abdel-Kawi, S. A. Nosier, Wael M. El-Maghlany, M. H. Abdel-Aziz, G. H. Sedahmed, A. S. Fathalla
Summary: This study investigates the mass and heat transfer behavior of a serpentine tube heat exchanger located at the wall of a square stirred tank reactor using the electrochemical technique. The results show that factors such as impeller rotational speed, impeller geometry, tube diameter, and tube pitch affect the mass or heat transfer coefficients. It is also found that the serpentine tube heat exchanger has higher mass transfer rates and can be used as a catalyst support and cooler, reducing the costs of biochemical reactors.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Abdulaziz A. Alturki, Abdulrahman Fahd Alharbi, M. Sh Zoromba, M. H. Abdel-Aziz, F. Al-Hossainy
Summary: In this paper, a poly para-nitro aniline (PPNN)/titanium (IV) oxide (TiO2)NPs composite was synthesized and thin films were fabricated using sol-gel and physical vapor deposition techniques. The structural and morphological properties of the films were investigated using X-ray diffraction (XRD) and scanning electron microscope (SEM). The optical properties of the films were characterized using reflectance (R), absorbance (Abs), and transmittance (T) measurements, while the geometrical characteristics were studied through TD-DFT calculations and optimization. The obtained results suggest that [PPNN/TiO2]MNC thin films are promising materials for solar cells and optoelectronic devices.
Article
Materials Science, Multidisciplinary
Mohamed Shafick Zoromba, Fahd Alharbi, Ahmed F. Al-Hossainy, Mohamed Helmy Abdel-Aziz
Summary: A blend of three conducting polymers was synthesized in the presence of sodium dodecyl sulphate and ferric chloride, and a hybrid nanocomposite was prepared using sol-gel method with ZrO2 nanoparticles. A thin film of the hybrid nanocomposite was prepared using Physical Vapor Deposition technology. Density functional theory (DFT) was used to optimize the molecular structure and validate it using XRD and Raman spectra. The (TCPB/ZrO2)HNC showed promising optical properties with a large energy bandgap.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
M. S. Mansour, Yousra Farid, S. A. Nosier, Ola Adli, M. H. Abdel-Aziz
Summary: This study investigates the feasibility of using photochemical advanced oxidation as a viable technique to address the ecological issue of persistent organic contaminants. UV/H2O2 and photoelectro-Fenton processes were utilized for the degradation of Eosin Yellow in solution. Various operational variables were examined for both methods to optimize the degradation efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Environmental Sciences
I. A. Ahmed, S. A. Nosier, G. F. Malash, M. Hussein, M. H. Abdel-Aziz, G. H. Sedahmed, A. S. Fathalla
Summary: Electrocoagulation using an Al helical coil cell was employed to remove brilliant yellow azo dye from wastewater. The coil's external surface served as the anode, while its internal surface acted as a cooler to control temperature. Several variables, including current density, dye concentration, pH, temperature, NaCl concentration, and stirring rate, were studied. Under optimal conditions, a maximum dye removal efficiency of 92% was achieved in 90 minutes, with an energy consumption ranging from 3.258 to 313.3 kW·h/kg.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Polymer Science
M. Sh. Zoromba, M. H. Abdel-Aziz, A. R. Ghazy, N. Salah, A. F. Al-Hossainy
Summary: Conducting poly orthophenylene diamine polymer (PoPDA) was synthesized via oxidative polymerization, and a poly(o-phenylene diamine) (PoPDA)/titanium dioxide nanoparticle mono nanocomposite [PoPDA/TiO2](MNC) was synthesized using the sol-gel method. The physical vapor deposition (PVD) technique was successfully used to deposit the mono nanocomposite thin film with good adhesion and a film thickness of approximately 100±3 nm. The [PoPDA/TiO2](MNC) thin films were characterized using X-ray diffraction (XRD) and scanning electron microscope (SEM), and their optical properties were studied using UV-Vis-NIR spectroscopy.
Article
Engineering, Multidisciplinary
M. H. Abdel-Aziz, H. A. Maddah, M. Sh. Zoromba, Ahmed F. Al-Hossainy
Summary: HCl doped-copolymer of ortho phenylene diamine, meta phenylene diamine, and pyrrole terpolymers blend was synthesized and deposited as thin films. The blend exhibited improved optical characteristics and showed potential for application in polymer solar cells. The theoretical and experimental analyses confirmed the structural and optical consistency of the blend.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
A. S. Fathalla, H. M. Yassine, S. A. Nosier, M. H. Abdel-Aziz, G. H. Sedahmed, M. A. El-Naggar
Summary: This study investigates mass and heat transfer rates in turbulent flow serpentine tube heat exchangers/reactors using the copper dissolution technique. The results show the potential of serpentine tubes for economically viable diffusion-controlled reactions and the use of drag-reducing polymers to reduce corrosion rates. The study highlights the applicability of serpentine tubes in catalytic continuous reactors and membrane processes, emphasizing their importance in heat exchanger design and corrosion allowance prediction.
EXPERIMENTAL HEAT TRANSFER
(2023)
Article
Engineering, Electrical & Electronic
Abdullah Almaghraby, Alaa Attar, Neazar Baghdadi, Mohamed Helmy Abdel-Aziz, Numan Salah, Mohamed Shafick Zoromba
Summary: In this study, polypyrrole/metal hydroxide composites were prepared, and it was found that the presence of metal hydroxides significantly improved the thermoelectric properties of the materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Environmental Sciences
D. G. Bassyouni, M. H. Abdel-Aziz, E-s. z. El-Ashtoukhy, G. H. Sedahmed, I. A. El-Gheriany
Summary: This study investigates the application of electrocoagulation for the removal of cyanide from industrial waste solutions, using a novel cell design and optimization via Response surface methodology. The results demonstrate the high efficiency of cyanide removal, providing valuable insights for industrial wastewater treatment.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
