Article
Materials Science, Multidisciplinary
Malik Durand, Jonathan Cormier, Fabien Paumier, Shyam Katnagallu, Aparna Saksena, Paraskevas Kontis, Florence Pettinari-Sturmel, Muriel Hantcherli, Jean-Michel Franchet, Christian Dumont, Nathalie Bozzolo
Summary: The present study aims to understand the mechanisms of macroscopic contraction in gamma/gamma' nickel based superalloys during isothermal annealing. The study characterized AD730 (TM) alloy samples using various methods and found that chemical composition changes during annealing led to a decrease in lattice parameters and resulted in macroscopic volume contraction.
Article
Chemistry, Physical
A. Muhammad, Z. Hassan, Sabah M. Mohammad, Suvindraj Rajamanickam, Shireen Mohammed Abed, M. G. B. Ashiq
Summary: In this study, absorption in the UV-C region was achieved using silver and fluorine co-doping in zinc oxide. The morphological, compositional, structural, and optical properties of the co-doped samples were investigated. The results showed significant changes in the properties of the samples upon co-doping.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Xiurong Zhai, Fan Xu, Yujiao Li, Fangying Jun, Shuai Li, Chunxian Zhang, Hua Wang, Bingqiang Cao
Summary: Silver-doped ZnO nanorods arrays grown in-situ onto ITO via one-pot hydrothermal route show highly selective and recyclable electroanalysis of phosphothioate pesticides, with good detection performance and photocatalytic degradation efficiency.
ANALYTICA CHIMICA ACTA
(2021)
Letter
Chemistry, Physical
Alexei A. Belik
Summary: The aim of these comments is to draw attention to significant errors reported in the commented paper, in which the authors claimed the preparation of solid solutions Bi1-xHoxFeO3. However, the X-ray diffraction data revealed the absence of single-phase solid solutions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
John Robinson, Arun Arjunan, Mark Stanford, Iain Lyall, Craig Williams
Summary: In this study, copper-silver structures with varying silver content were fabricated using in situ alloying and Laser Powder Bed Fusion (L-PBF) Additive Manufacturing (AM). Various analyses including SEM, XCT and XRD were conducted to study the morphology, distribution, elemental analysis, pore defects, atomic crystal structure, and mechanical properties of the CuAg alloys. Results showed that increasing silver content reduced pore defects and size, while annealing process increased porosity and improved mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Erika Fantozzi, Erlinda Rama, Cinzia Calvio, Benedetta Albini, Pietro Galinetto, Marcella Bini
Summary: This study discusses the preparation of undoped and Ag-doped MgFe2-xAgxO4 nanoparticles, and the analysis of their antibacterial activity towards Escherichia coli and Staphylococcus aureus. Results indicate that Ag-doped particles showed enhanced antibacterial properties, with sol-gel particles displaying better efficiency against the chosen bacteria.
Article
Chemistry, Multidisciplinary
Hong-Long Shi, Zi-An Li
Summary: A new package has been developed to determine unit-cell parameters from a single electron diffraction pattern in TEM, expanding the application range of existing electron diffraction techniques. By reconstructing a reciprocal primitive cell, converting it to a Niggli cell, and finally determining the unit cell parameters, the software addresses the impact of experimental conditions on accuracy.
Article
Chemistry, Multidisciplinary
Jaeyong Yun, Min-Sung Bae, Jin Su Baek, Tae Wan Kim, Sung-Jin Kim, Jung-Hyuk Koh
Summary: This study investigated the modeling of optimized lattice mismatch in (In, Ga) co-doped ZnO multi-deposition thin films using carbon-dioxide annealing and analyzed its crystallographic and optical properties. The films were fabricated on sapphire substrates with various types of bottom layers using solution synthesis, spin coating, and carbon-dioxide laser annealing. The (In, Ga) co-doped ZnO films with Ga-doped ZnO as the bottom layer showed the lowest mismatch ratio between the substrate and the film. The carbon-dioxide laser annealing process improved the electrical properties of the films by reducing lattice mismatch, resulting in an optimized sheet resistance of 34.5 k ohm/sq and high transparency of nearly 90% in the visible light wavelength region.
Article
Physics, Condensed Matter
Zhengzheng Ma, Lei Tan, Haijun Huang, Lunhua He, Jie Chen, Huaile Lu, Sihao Deng, Wen Yin, Junrong Zhang, Haolai Tian, Rong Du, Donna C. Arnold, Anthony E. Phillips, Martin T. Dove
Summary: This study investigated the crystal and magnetic structures of strontium-doped BiFeO3 using neutron powder diffraction and the Rietveld method. The results showed that the structural deformations and antiferromagnetic order varied with chemical composition but had little variation with temperature. It was concluded that there is no significant coupling between antiferromagnetism and ferroelectricity in Sr-doped BiFeO3 and pure BiFeO3.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Nanoscience & Nanotechnology
U. Hecht, A. Vayyala, P. Barriobero-Vila, N. Navaeilavasani, S. Gein, I. Cazic, J. Mayer
Summary: The medium entropy alloy Al0.75CrFeNi2.1 with hypo-eutectic composition was processed by laser powder bed fusion (LPBF). Non-equilibrium solidification conditions led to the formation of cellular and lamellar microstructures. In-situ high-energy synchrotron X-ray diffraction (HEXRD) and atom probe tomography (APT) were used to study the microstructure evolution during post-build annealing. The mechanical properties of the alloy, including tensile strength and elongation at fracture, were evaluated and compared to martensitic steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Zachary N. Buck, Matthew J. Connolly, May L. Martin, Damian Lauria, Jason P. Killgore, Peter E. Bradley, Yan Chen, Ke An, Andrew J. Slifka
Summary: Interrupted tensile tests were performed on an AISI 4130 pressure vessel steel, and the results were investigated using neutron diffraction and scanning microscopy techniques. The study revealed an increase in dislocation densities and a strain-induced phase transformation beyond the ultimate tensile strength. Additionally, the characterization of microstructure and phase fractions using EBSD and SKPFM demonstrated the utility of SKPFM in distinguishing metallic phases with similar crystal structures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Optics
Sushama Sushama, Punam Murkute, Hemant Ghadi, Sushil Kumar Pandey, Subhananda Chakrabarti
Summary: Researchers explored the effect of boron and phosphorus co-doping in ZnO thin films, finding that co-doping enhanced phosphorus incorporation and led to improved stability in acceptor behavior for over a year, especially after high-temperature annealing.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Shaobo Ma, Peichao Zou, Huolin L. Xin
Summary: This study successfully stabilizes the structure of P2-type layered sodium oxide Na0.667Mn0.667Ni0.167Co0.167O2 through a high-entropy doping strategy and proposes a novel HE-NMNC composite. The HE-NMNC demonstrates outstanding rate capability and cycling stability, providing new insights for the development of advanced cathode materials.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Pham Thi Thu Hoai, Nguyen Thi Mai Huong, Pham Thi Huong, Nguyen Minh Viet
Summary: This study developed a strategy to enhance the photocatalytic activity of ZnO by doping it with silver nanoparticles (Ag). The synthesized Ag-ZnO photocatalyst showed improved light absorption and charge carrier separation, leading to increased CO2 conversion. This research provides an efficient photocatalyst for CO2 conversion, contributing to the reduction of carbon dioxide concentration and greenhouse gas emissions.
Article
Materials Science, Multidisciplinary
Md Maruful Islam, Toshiyuki Yoshida, Yasuhisa Fujita
Summary: This study investigates the properties of Ga-doped zinc oxide nanoparticle layers under various annealing atmospheres. The results show that Ga-doping successfully improves the electrical properties of the nanoparticle layers, and the atmospheric effects are confirmed through defect spectrum analysis.
Article
Chemistry, Physical
S. Sanjabi, A. Obeydavi
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Chemistry, Applied
M. Boroujerdnia, A. Obeydavi
MICROPOROUS AND MESOPOROUS MATERIALS
(2016)
Article
Chemistry, Inorganic & Nuclear
Armin Kiani, Kamran Dastafkan, Ali Obeydavi, Mohammad Rahimi
SOLID STATE SCIENCES
(2017)
Article
Materials Science, Multidisciplinary
M. Sabzi, A. Obeydavi, S. H. Mousavi Anijdan
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2019)
Article
Acoustics
Kamran Dastafkan, Armin Kiani, Ali Obeydavi, Mohammad Rahimi
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Environmental Sciences
K. Dastafkan, M. Sadeghi, A. Obeydavi
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Ali Obeydavi, Ahmad Rezaeian, Ali Shafyei, Parviz Kameli, Jyh-Wei Lee
MATERIALS RESEARCH EXPRESS
(2019)
Article
Materials Science, Ceramics
Ali Obeydavi, Ali Shafyei, Ahmad Rezaeian, Parviz Kameli, Jyh-Wei Lee
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2020)
Article
Chemistry, Inorganic & Nuclear
Mahsa Saberian, Alireza Nezamzadeh-Ejhieh
Summary: CuO was successfully supported on clinoptilolite nanoparticles (NCP) via ion exchange and calcination, forming CuO-NCP photocatalysts. CuO-NCP exhibited enhanced photocatalytic activity towards tetracycline (TC), and the best degradation performance was achieved under optimal conditions (25 ppm TC solution, pH 4.8, and 0.5 g/L catalyst).
SOLID STATE SCIENCES
(2024)