Article
Materials Science, Multidisciplinary
Avishek Roy, Nayan Ghosh, Manojit Ghosh, Sadhan Chandra Das, Abhijit Majumdar
Summary: The study found that the surface resistance and properties of Cu-TiC thin films were improved under argon plasma irradiation, affecting surface roughness and chemical composition.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Ovidiu-Alexandru Capraru, Bogdan Lungu, Marian Virgolici, Mihai Constantin, Mihalis Cutrubinis, Laura Chirila, Ludmila Otilia Cinteza, Ioana Stanculescu
Summary: In this study, cotton textiles were impregnated with three different nanocomposites (Ag/chitosan, Ag/polyvinylpyrrolidone, and ZnO/polyvinylpyrrolidone) and irradiated using a Co-60 gamma source. The results showed that the impregnated cotton materials exhibited good antibacterial properties after being irradiated with γ rays.
Article
Environmental Sciences
P. Jeya, SP. Keerthana, L. Kungumadevi, R. Yuvakkumar, G. Ravi, Asokan Kandasami, T. S. Senthil
Summary: The photocatalytic action of PbS nanocrystallites co-doped with Cu and Sr ions was studied under gamma irradiation for organic dye degradation. The nanocrystallites were characterized using X-ray diffraction, Raman, and field emission electron microscopic analysis. The optical bandgaps of gamma-irradiated PbS with co-dopants shifted from 1.95 eV (pristine PbS) to 2.45 eV in the visible spectrum. The gamma-irradiated Pb(0.98)Cu0.01Sr0.01S nanocrystallite sample exhibited a higher photocatalytic degradation activity of 74.02% in 160 min and stability of 69.4% after three cycles, suggesting potential influence of gamma irradiation on organic dye degradation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Ahmed Awadallah-F, Maysara E. Aboulfotouh, Hussein E. Ali, E. A. Salem
Summary: Biofilm and bionanocomposite films were synthesized using polyvinylpyrrolidone, chitosan, citric acid, and zinc oxide nanoparticles. The films displayed antimicrobial and biodegradable properties, making them suitable for food packaging applications.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Environmental
Qi Zhao, Takeshi Saito, Kazuya Miyakawa, Hiroshi Sasamoto, Taishi Kobayashi, Takayuki Sasaki
Summary: This study investigated the influence of humic acid (HA) and its radiological degradation on the sorption of Cs+ and Eu3+ by sedimentary rock. It was found that HA had a larger impact on the sorption of Eu3+ compared to Cs+.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Shamshad A. Khan, R. M. Sahani, Ravi P. Tripathi, M. Shaheer Akhtar, Archana Srivastava
Summary: Bulk Se85Te15-xBix chalcogenide glasses were synthesized using melt quenching technique, and nanothin chalcogenide films of Se85Te15-xBix alloys were deposited on glass/Si wafer by PVCT. The optical and structural properties were analyzed by exposing the films to different doses of gamma irradiation, which led to variations in optical parameters and an increase in indirect band gap with higher irradiation doses. These changes were attributed to increased disorder and lattice strain caused by gamma irradiation.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Nebojsa Romcevic, Marina Lekic, Aleksander Kovacevic, Novica Paunovic, Borislav Vasic, Maja Romcevic
Summary: Single crystals of Bi12SiO20 were grown using the Czochralski technique and irradiated with a femtosecond pulsed laser beam. Irradiated samples showed the presence of small spherical islands on the surface, with the size and density depending on the laser power. Far-infrared spectra of the irradiated samples also exhibited significant changes compared to the non-irradiated samples. The results suggest the formation of bismuth oxide based nano-objects, in the form of nanocrystals with dimensions below 20 nm, arranged in a matrix of Bi12SiO20.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Materials Science, Composites
Mohamed Sahnoune, Mustapha Kaci, Helene Garay, Jose-Marie Lopez-Cuesta, Mohamed Mahlous
Summary: This study investigated the effect of gamma irradiation on neat Polyamide-11 (PA11) and PA11 filled with halloysite nanotubes (HNTs). The results showed that the presence of HNTs limited the impacts of gamma irradiation through a barrier effect. Experimental design revealed the optimum irradiation dose for achieving optimal thermal and mechanical properties.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Tongjun Niu, Tianyi Sun, Zhongxia Shang, Yifan Zhang, Zihao He, Wei-Ying Chen, Meimei Li, Haiyan Wang, Xinghang Zhang
Summary: A study found that helium bubble swelling can be effectively controlled by pre-injecting helium in Cu50Ag50, Cu45Ag45Fe10, and Cu33Ag33Fe34 nanocomposites, with Cu33Ag33Fe34 exhibiting smaller bubble swelling compared to Cu50Ag50. This suggests the vital role of Cu-Ag-Fe triphase triple junctions and phase boundaries in managing helium. The study provides a new perspective for improving the radiation tolerance of nanocrystalline alloys through microstructure design.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Physical
Xiang Liu, Yonggang Chen, Zhibin Deng, Yuexin Yang
Summary: In this study, high-performance NF membranes were prepared by blending Fe3O4-HNTs composites into the PVDF matrix, resulting in improved hydrophilicity, water flux, dye rejection ratios, and antifouling properties. The successful incorporation of Fe3O4-HNTs provided a solution to nanoparticle aggregation in membrane inner structure and offered references for the preparation of high-performance NF membranes.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jelena Krstic, Aleksandra Radosavljevic, Jelena Spasojevic, Nikolina Nikolic, Uros Jovanovic, Nadica Abazovic, Zorica Kacarevic-Popovic
Summary: Hydrogels consisting of radiation-degraded chitosan, poly(vinyl alcohol), and Ag nano-filler were synthesized using two-stage and single-stage procedures. The study found that hydrogels synthesized using the single-stage procedure exhibited stronger antibacterial activity, possibly due to the higher mobility of radiation-modified chitosan in the network.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
L. Diaz, V. D. Rodriguez, M. Gonzalez-Rodriguez, E. Rodriguez-Castellon, M. Algarra, P. Nunez, E. Moretti
Summary: Low-cost M/TiO2 semiconductor catalysts were prepared by impregnating five different first row transition metals on a commercial titania support, with Cu/TiO2 showing the best photocatalytic activity for hydrogen production under both UV and visible light. Ni/TiO2 and Co/TiO2 also exhibited significant photocatalytic activity under UV light. The Cu/TiO2 catalyst was characterized by TEM and XPS measurements, showing the dispersion of copper species on TiO2 and the oxidation-reduction process during the hydrogen production reaction. Impregnated TiO2 showed higher H-2 production rates compared to non-impregnated TiO2, making Cu/TiO2 a cost-effective alternative to Pt/TiO2 for hydrogen production.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Environmental
Faten Ismail Abou El Fadl, M. M. El-Toony, Nabila Ahmed Maziad
Summary: A mixture of tea waste (TW), alginate (ALG), and nano iron (Fe) was used to prepare environment-friendly smart beads of composites to decontaminate water polluted by petroleum oil spillage. Incorporation of ALG and TW created a hydrophilic pattern, and the addition of iron nanoparticles resulted in the formation of nanocomposites with magnetic properties. These nanocomposites, including their derivatives ALG/TW and ALG/Fe, suspended at the oil-water interface, effectively enhanced the efficiency of decontamination. Characterizations of the nanocomposites were performed thermally using Thermogravimetric analysis (TGA) and their crystallinity was analyzed by x-ray diffraction (XRD). Water absorption capacity, ion exchange capacity, electrical conductivity, and morphological structure were assessed through various techniques. The nanocomposites showed high decontamination efficiency of 99.8% and were successfully regenerated for multiple cycles with a slight decrease in efficiency.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Nanoscience & Nanotechnology
F. M. Nayef, B. H. Rabee
Summary: A nanocomposite consisting of PMMA/PS blend and Al2O3 nanoparticles has been prepared and characterized for its structural and dielectric properties. The nanocomposite exhibited homogeneous distribution of Al2O3 nanoparticles within the polymer films, as well as the formation of charge transfer complex. The addition of Al2O3 nanoparticles resulted in the agglomeration of elliptical particles on the surface of the polymeric matrix. The electrical conductivity of the nanocomposite was found to increase with the increase in frequency and concentration of Al2O3 nanoparticles. Moreover, the nanocomposite showed improved electrical conductivity after irradiation, making it suitable for electronic devices, sensors, and batteries.
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
M. I. A. Abdel Maksoud, Soraya Abdelhaleem, Eman K. Tawfik, Ahmed G. Bedir, Asmaa S. Morshedy
Summary: This study investigated the effects of different doses of gamma irradiation on the structural, thermal, photoluminescence, and optical properties of PVA/Gd2O3 nanocomposite films. It was found that gamma irradiation significantly influenced the thermal stability of the films, as well as the energy gap and Urbach's energy. The results suggest that irradiated PVA/Gd2O3 nanocomposite films are promising materials for flexible optoelectronic devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)