Article
Chemistry, Physical
Ahmad A. Ahmad, Qais M. Al-Bataineh, Areen A. Bani-Salameh, Ahmad D. Telfah
Summary: In this study, PEO-PVA/MWCNTs nanocomposite films were fabricated and characterized. The results showed that the introduction of MWCNTs affected the optical properties and electrical conductivity of the films.
SURFACES AND INTERFACES
(2022)
Article
Optics
B. Kavitha, K. Chandra Sekhar, K. Siva Kumar, N. Narsimlu
Summary: PVA-TiO2-NaBr (PVATN) polymer composites were synthesized by solution casting technique. XRD, optical absorption, FTIR, and Raman spectroscopy were used to study the influence of TiO2/NaBr on PVATN polymer samples. XRD spectra showed the modification of the semi-crystalline phase of PVATN polymers with respect to TiO2/NaBr weight % and TiO2 anatase phase. The optical absorption spectra of PVATN polymer samples exhibited a blue shift in the absorption edges with the change in composition. Urbach energy and refractive index values were evaluated and discussed using optical data. The FTIR spectra of several functional groups in PVA/TiO2 were analyzed. Raman spectra showed the presence of various vibrations in the polymer samples.
Article
Physics, Multidisciplinary
M. Mohammed, I. S. Yahia
Summary: Polymeric nanocomposite films based on a blend of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) with fullerene (C60) were prepared using the casting method and their structural behavior and optical properties were examined. The results showed that these nanocomposite films have potential applications in electrical and optoelectronic devices.
Article
Materials Science, Multidisciplinary
T. S. Soliman, M. F. Zaki, M. M. Hessien, Sh. I. Elkalashy
Summary: This study aimed to synthesize BaTiO3 nanocrystalline particles using the tartrate precursor process, and then prepare nanocomposite films with PVA. Analysis using XRD and FTIR showed complex interactions between BaTiO3 nanoparticles and the PVA matrix. As the concentration of BaTiO3 nanoparticles in the PVA matrix increased, the optical band gap decreased while the Urbach energy increased.
Article
Chemistry, Physical
Xiaojing Yu, Haoran Qiu, Zhe Wang, Bin Wang, Qingnan Meng, Shaodong Sun, Yufei Tang, Kang Zhao
Summary: The TiO2-Au-BiOI heterojunction exhibited superior photocatalytic performance for N2 photofixation, outperforming other heterostructured photocatalysts and showing promising potential for future applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Condensed Matter
W. Jilani, A. Bouzidi, K. Omri, M. Al-Dossari, I. S. Yahia, H. Guermazi
Summary: The casting aqueous solution technique was used to prepare Co: ZnO incorporated PVA nanocomposite polymer system films with different wt % CZO nanopowders. The values of crystallite sizes, lattice strains, dislocation densities, and stacking fault energies were determined and found to vary with different concentration of CZO nanopowders. The optical properties of the CZO-PVA NCPSFs were also characterized, including band gaps and doping effects. The research provides valuable insights for the design and optimization of CZO-PVA NCPSFs for optical sensing electronic applications.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Ari H. A. Darwesh, Shujahadeen B. Aziz, Sarkawt A. Hussen
Summary: In this study, PVA:Bi2O3 composites were prepared by integrating different amounts of Bi2O3 with PVA using casting methodology. The influence of Bi2O3 filler loading on the structure of PVA was investigated through XRD and FTIR approaches. The results showed polymer/filler interactions. The optical properties and band gap energy were analyzed using Tauc's model and the W-D model. The introduction of Bi2O3 filler reduced the band gap energy of PVA.
Article
Engineering, Electrical & Electronic
M. R. El-Aassar, Rabab K. Sendi, A. Atta, Nuha Al-Harbi, Mohamed Rabia, M. M. Abdelhamied
Summary: Polymer composite materials consisting of PVA, CS, and TiO2 were successfully synthesized and their optical characteristics were investigated. The incorporation of TiO2 into the PVA/CS blend was confirmed by various techniques. The addition of TiO2 resulted in a decrease in band gap energy and an increase in absorbance and optical conductivity. The relaxation time decreased with increasing TiO2 concentration.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Physical
Hamid Akherat Doost, Arman Ghasedi, Ehsan Koushki
Summary: TiO2 NPs were synthesized and characterized, then embedded into PVA matrix with gold nanoparticles to study their optical and nonlinear optical properties. The results showed different effects of gold nanoparticles and PVA polymers on the band gap energy and properties of TiO2 NPs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Lalitha Gnanasekaran, Saravanan Rajendran, A. K. Priya, D. Durgalakshmi, Dai-Viet N. Vo, Lorena Cornejo-Ponce, F. Gracia, Matias Soto-Moscoso
Summary: By using lemon extract, metal oxides and nanocomposites were successfully synthesized, showing excellent photocatalytic degradation performance and structural optical properties.
ENVIRONMENTAL RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
N. M. Shaalan, T. A. Hanafy, M. Rashad
Summary: In this study, composites of functionalized polyvinyl alcohol were prepared with NiO nanoparticles, and the crystal structure analysis and optical properties of the functionalized PVA were well studied. The addition of nanoparticles influenced the structure of PVA films, leading to changes in optical properties with increasing NiO content. The dual optical properties of the composites showed features of both PVA and dopant materials, with the appearance of a lower energy indirect band gap at higher NiO concentrations.
Article
Physics, Multidisciplinary
Basma A. El-Badry, G. A. Khouqeer, M. F. Zaki
Summary: Nanocomposite films made of TiO2 nanoparticles embedded in PVA polymers were prepared. The films were irradiated with gamma-ray and then investigated using various techniques. The results showed changes in morphology, optical properties, and fluorescence due to the addition of TiO2 and gamma-irradiation. These films could be potentially used in industrial applications, such as gamma-ray dosimeters.
Article
Chemistry, Physical
Austin Yuhang Yap, Chiam-Wen Liew
Summary: Polymer electrolyte systems composed of poly(vinyl alcohol) (PVA) and lithium trifluoromethanesulfonate (LiTf) with TiO2 nanofiller were prepared by solution casting technique. The addition of TiO2 nanofiller resulted in a more conductive and thermally stable polymer electrolyte. The interaction between TiO2 nanofiller and polymer matrix improved the rigidity of the polymer. An electrical double layer capacitor (EDLC) fabricated using the nanocomposite polymer electrolyte showed good electrochemical stability and specific capacitance.
Article
Chemistry, Multidisciplinary
Jie Cao, Zhilin Zhang, Kaiyun Li, Cha Ma, Weiqiang Zhou, Tao Lin, Jingkun Xu, Ximei Liu
Summary: Researchers have developed a self-healable conducting polymer hydrogel strain sensor with high sensing performance. This sensor can accurately monitor physiological signals, such as swallowing, finger bending, and knee bending, and has broad applications in wearable electronics and health monitoring.
Article
Chemistry, Physical
H. J. Yashwanth, K. Hareesh, Sachin R. Rondiya, Ram J. Choudhary, Sanjay D. Dhole
Summary: In this study, borophene quantum dots were scaffolded on TiO2 nanoparticles, resulting in enhanced photoelectrochemical water splitting activity. The optimized concentration of borophene quantum dots on TiO2 nanoparticles showed a lower effective absorption edge, indicating improved photoelectrochemical response. Various characterization techniques confirmed the presence and effect of borophene quantum dots on the nanocomposite. The results suggest that the BPQDs/TiO2 nanocomposite exhibits improved photoelectrochemical water splitting activity due to the synergistic effects of the individual components.
APPLIED SURFACE SCIENCE
(2024)
Article
Materials Science, Textiles
Poopak OhadiFar, Sheila Shahidi, Davoud Dorranian
JOURNAL OF NATURAL FIBERS
(2020)
Article
Materials Science, Textiles
Sepideh Asadnajafi, Sheila Shahidi, Davoud Dorranian
JOURNAL OF THE TEXTILE INSTITUTE
(2020)
Article
Materials Science, Coatings & Films
Abrisham Rousta, Davoud Dorranian, Mohammad Elahi
SURFACE ENGINEERING
(2020)
Article
Nanoscience & Nanotechnology
Elham Naseri Ghaem, Davoud Dorranian, Amir Hossein Sari
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2020)
Article
Engineering, Electrical & Electronic
Fereydoon Ataei, Davoud Dorranian, Negar Motakef-Kazemi
Summary: The experimental investigation of using pulsed laser ablation in liquid environment as a physical bottom-up method to synthesize metal-organic framework MOF-5 has been conducted for the first time. The results show that the size of synthesized MOF-5 nanostructures decreases with increasing laser fluence, while increasing the ligand concentration and laser fluence in the liquid environment of ablation leads to an increase in the quantity of produced nanostructures.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Textiles
Arghavan Yazdanpanah, Sheila Shahidi, Davoud Dorranian, Shahrooz Saviz
Summary: In this research, ZnO nanoparticles were synthesized on cotton fabric through the pulsed laser ablation method. The characteristics, crystalline structure, and size distribution of the nanoparticles were examined. The treated cotton fabric showed lower transmittance in the UVA and UVB region compared to untreated fabric, and exhibited good antibacterial properties against Staphylococcus Aureus contamination.
JOURNAL OF THE TEXTILE INSTITUTE
(2022)
Article
Engineering, Electrical & Electronic
Elham Naseri Ghaem, Davoud Dorranian, Amir Hossein Sari
Summary: The study found that a DC magnetic field in the range of 0-180 mT has significant effects on the properties of cobalt oxide nanoparticles synthesized by pulse laser ablation in distilled water. Increasing the magnetic field strength during the ablation process resulted in a noticeable decrease in the size of the nanoparticles, leading to a shift in their excitonic absorption peaks. By applying an external magnetic field, crystalline structure nanoparticles were obtained, while in the absence of an external magnetic field, only amorphous phase nanoparticles were produced. The results suggest that an external magnetic field is a strong tool for controlling the properties of ferromagnetic nanoparticles produced by laser ablation.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Nuclear Science & Technology
Hiva Nasiri, Davoud Dorranian, Amir Hossein Sari
Summary: The capability of laser ablation method in producing gold/iron oxide nanocomposite was experimentally studied. Au and FeO nanoparticles were synthesized in distilled water using a Q-switched Nd:YAG laser. Mixtures of suspensions in different volumetric ratios were prepared and irradiated using a green laser to produce nanocomposite. Various analytical techniques were applied to characterize the products, and the results showed that this method is easy, fast and environmentally friendly compared to chemical-based methods.
RADIATION EFFECTS AND DEFECTS IN SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Elmira Solati, Sahar Heydari Tari, Davoud Dorranian
Summary: The role of laser fluence on the properties of graphene/CuO nanocomposite, prepared by pulsed laser ablation method was experimentally studied. It was found that by adjusting the laser fluence, the adhesion, size, and production rate of CuO nanoparticles in the nanocomposite can be controlled.
MATERIALS TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Nasim Mirghassemzadeh, Davoud Dorranian, Shahrooz Saviz
Summary: The existence and polarity of dust acoustic double layers (DADLs) in a magnetized self-gravitating opposite polarity dusty plasma (OPDP) have been investigated. The study revealed that several parameters, including the nonextensivity of ions, magnetic field strength and direction, and self-gravitational field, affect the behavior of DADLs.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Materials Science, Multidisciplinary
Nafise Ebrahim Jasbi, Davoud Dorranian, Amir Hossein Sari
Summary: Four different photonics based methods for producing Au-TiO2 nanocomposites were introduced and their experimental results were investigated. Significant discrepancies in size and morphology of the composed nanoparticles were observed among these methods. Only in the fourth method, the particles morphology was preserved and remained unchanged.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Physics, Fluids & Plasmas
Nasim Mirghassemzadeh, Davoud Dorranian, Shahrooz Saviz
Summary: The impact of Fermi-Dirac distributed electrons and ions on the features of dust acoustic double layers in a four-component magnetized dusty plasma was investigated in this study. The results showed that the energy of the generated double layers is significantly lower compared to classical plasmas, and the ratio of the Fermi temperature of ions to electrons plays an important role in the structure of the double layers.
PHYSICS OF PLASMAS
(2022)
Article
Engineering, Electrical & Electronic
Samira Hosseingholilou, Davoud Dorranian
Summary: The study investigated the effects of deposition time and voltage on the characteristics of gold nanoparticles thin films prepared by electrophoretic deposition method. It was found that the roughness, thickness, and surface quality of the films can be controlled by adjusting the deposition time and applied voltage.
IET OPTOELECTRONICS
(2023)
Article
Materials Science, Ceramics
Abrisham Rousta, Davoud Dorranian
Summary: Mn3O4 (hausmannite) nanoparticles were synthesized using the pulsed laser ablation method in a liquid environment and deposited on an aluminum substrate using the direct current electrophoretic deposition technique. The effects of deposition voltage and time on the film characteristics were studied using various diagnostic methods. The formation of stable manganese oxide nanoparticles with the chemical formula Mn3O4 was confirmed by X-ray diffraction, and the morphology of the films changed from spherical nanoparticles to nanosheets with increasing deposition voltage. The roughness, average particle size, and thickness of the deposited thin films could be controlled by the applied voltage and deposition time, as observed by AFM studies. Additionally, the reflectance patterns of the samples depended on the material of the thin films and substrates, as well as the size of particles in the film structure, as indicated by UV-Vis-NIR spectroscopy results.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2023)
Article
Physics, Multidisciplinary
Mina Safa, Davoud Dorranian, Amir Ali Masoudi, Laleh Farhang Matin
Summary: The experiment investigates the influence of a transverse magnetic field on plasma plume produced by pulsed laser ablation as well as the structural and optical properties of nickel oxide nanoparticles. The strength of the external magnetic field can be controlled by the distance between magnets. Results show that increasing the strength of the magnetic field leads to an increase in XRD peak intensity and a decrease in particle size. Additionally, the magnetic field causes cyclotron motion of charged particles in the plasma plume, increasing their energy and reducing agglomeration.
