Article
Materials Science, Ceramics
Yuqian Zhou, Chao He, Qian Ma, Anze Shui
Summary: Aluminum titanate (Al2TiO5, AT) flexible ceramics modified with rare-earth oxides (La2O3 and Y2O3) were successfully prepared and analyzed by XRD and SEM. The addition of La2O3 and Y2O3 generated second-phase grains, which improved the flexural strength by strengthening the branch and deflection phenomena, and hindering crack propagation. The presence of second-phase grains also resulted in a decrease in grain size and degree of oriented arrangement.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Geological
Xianwei Zhang, Xinyu Liu, Lingwei Kong, Cheng Chen
Summary: This study investigates the effects of free iron oxide (FIO) on the physicochemical and mechanical behaviors of natural clay by removing FIO from Zhanjiang clay. The results show that the removal of FIO significantly changes the soil physical indices and degrades the mechanical properties. Microstructural observations and tests indicate that FIO is distributed at the contacts between soil particles and exists in the bridging form. The attractive forces between FIO and clay mineral surfaces lead to the formation of larger soil aggregates. The removal of FIO results in the breakdown of soil aggregates and the generation of large pores, increasing soil compressibility and decreasing shear strength.
ENGINEERING GEOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Silviu Polosan, Paul Ganea, Andrei Nitescu
Summary: Phosphate tellurite glasses were successfully synthesized by melt quenching, with a composition of 40%ZnO+40%P2O5+20%TeO2. Compared to glasses synthesized with H3PO4, those containing P2O5 showed greater chemical stability. Magneto-optical measurements revealed a specific transition associated with tellurium colloids, while densities and electrical conductivity increased with melting temperature.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Engineering, Electrical & Electronic
Haofeng Jing, Tianchenxi Gou, Jinglian Gao, Hengheng Feng, Tao Yu, Hongtao Yu
Summary: Li2Mg3Ti0.91(Al0.5Nb0.5)(0.09)O-6-based microwave dielectric ceramics with high dielectric constant, quality factor and temperature stability were prepared. The influence of Zn2+ dopant on the structures and microwave dielectric properties was investigated. Zn2+ doping improved grains growth, reduced grain boundaries, and made grains distribution uniform, resulting in improved εr, Qxf, and τf. A microwave dielectric ceramic with optimum Zn2+ content exhibited better comprehensive dielectric properties: εr = 14.51, Qxf = 158,120 GHz, τf = -13.0 ppm/degrees C.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Environmental
Leonardo Davi Bonatto, Lucas Dall Agnol, Vinicius Polo Vergani, Claudio Antonio Perottoni, Otavio Bianchi, Janete Eunice Zorzi
Summary: Wild moth silk fibers have distinct properties from cultivated silk and show promising applications. However, few Lepidoptera species have had their silk properly characterized. Silk is used for various purposes in Lepidoptera, including cocoon construction, collective shelters, migration, lifelines, and prey capture. Understanding the composition and properties of these silks can help understand their role in biology and potential applications. The results of this study provide insights into the mechanical properties of different Lepidoptera silks and the correlation with specific components.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Materials Science, Ceramics
Tianyi Hua, Ouli Fu, Parvaneh Kheirkhah Barzoki, Yasser Gowayed
Summary: This study presents a method for fabricating metakaolin-based geopolymers that can maintain their structural and mechanical stability up to 600 degrees C. The chemical composition of the geopolymers was analyzed using thermogravimetric analysis and Fourier-transform infrared spectroscopy. The presence of residual free water led to damage when exposed to high temperatures, so the curing temperature was increased to remove water during the curing process. A correlation was found between the formation of Si-O-Al linkage and the position of fingerprint peaks in infrared spectra, providing a means to evaluate the extent of geopolymerization. The flexural and tensile properties of the geopolymers were measured at different temperatures, and it was found that the metakaolin-based geopolymers cured at 120 degrees C remained mechanically stable up to 600 degrees C.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Construction & Building Technology
Jiahao Tian, Sang Luo, Qing Lu, Shicheng Liu
Summary: This study investigated the effects of epoxy resin contents on the performance of hot-mix epoxy asphalt and found a cost-effective proportion. Results showed that when the epoxy resin content exceeds or equals 40%, the mechanical properties of epoxy asphalt meet the requirements. Increased epoxy resin content also leads to a higher viscosity-increasing rate, especially at high temperatures. Additionally, certain wavenumbers in the infrared spectrum of epoxy asphalt demonstrate positive correlations with epoxy resin contents. Fluorescence microscopy tests revealed agglomeration of epoxy resin particles and the formation of a cross-linked spatial structure when the epoxy resin content exceeds or equals 40 wt%.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Xiulan He, Shilong Wang, Tai Jin
Summary: Nitrogen-doped nano TiO2 powder was prepared using the solvothermal method. The powder was loaded on the porous ceramic carriers through vacuum impregnation, and the effects of water content and carrier pore size on the microstructure and photocatalytic activity were investigated. Results showed that introducing 25% deionized water improved the crystallinity and photocatalytic properties of the nitrogen-doped nano TiO2 powder. Distorting the lattice and inhibiting grain growth enhanced its photocatalytic activity. The supported TiO2 on porous ceramic carriers showed improved absorption and photocatalytic activity due to the transmission channel and good absorbing effect of the carrier pores, especially the 20 PPI carrier with high porosity and suitable strength. The supported TiO2 could be easily recycled and reused.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Optics
Tobias Pfeiffer, Jens Klier, Georg von Freymann, Daniel Molter
Summary: Nonlinear frequency conversion provides an elegant method for detecting low-energy photons with different wavelengths from the pump wavelength while providing phase information. We propose a phase-sensitive measurement method in the terahertz spectral range using visible light, which enables fast determination of layer thicknesses and achieves phase-resolved detection of terahertz pulses with standard equipment.
Article
Energy & Fuels
Samiya Mahjabin, Md Mahfuzul Haque, Sobayel Khan, Vidhya Selvanathan, M. S. Jamal, M. S. Bashar, Hend Alkhammash, Mohammad Ismail Hossain, Md Shahiduzzaman, Nowshad Amin, Kamaruzzaman Sopian, Md Akhtaruzzaman
Summary: The study investigates the influence of oxygen concentration on the structural and optical properties of WOx films, prepared by reactive sputtering at varying oxygen concentrations. The films' thickness and surface roughness were found to be dependent on oxygen concentration, impacting their optical parameters. The optimized WOx film shows potential as an efficient electron transport layer for perovskite solar cells, achieving high quantum efficiency and short-circuit current density.
Article
Materials Science, Ceramics
Julie Simeon, Florent Lebreton, Laure Ramond, Philippe Martin, Doris Drouan, Catherine Sabathier, Guillaume Bernard-Granger
Summary: The microstructure of a 98.7% dense U0.856Pu0.144O1.993 sintered sample has been characterized by electron probe microanalysis, Raman spectroscopy, and transmission electron microscopy. Results from Raman spectroscopy and electron probe microanalysis are comparable in studying the spatial distribution of plutonium in a homogeneous sintered MOX fuel. Transmission electron microscopy provides additional characterizations for investigating the chemical homogeneity of sintered MOX fuels, revealing variations in the Pu/(U+Pu) content at the scale of elementary grains.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Donglei Wei, Xifeng Yang, Yushen Liu, Hyo Jin Seo
Summary: In this study, Eu3+-surface coated BiLa2O4.5 material was prepared, which acts as an electron acceptor to delay the recombination of photo-created h+/e- pairs. Significant improvement in photocatalysis was observed compared to uniformly doped Eu3+ samples. Characterization techniques were used to analyze the microstructure, electrical impedance, and photocurrent properties of the prepared particles.
SURFACES AND INTERFACES
(2023)
Article
Optics
Kazuki Hashimoto, Venkata Ramaiah Badarla, Takuro Ideguchi
Summary: The study introduces a high-speed FTIR spectroscopy technique called phase-controlled Fourier-transform infrared spectroscopy (PC-FTIR) capable of measuring MIR absorption spectra at a rate of above 10 kHz. It demonstrates a high scan rate with a high signal-to-noise ratio for various spectral bandwidths by arbitrarily adjusting the instrumental spectral resolution. This high-speed MIR spectrometer could be particularly useful for measuring non-repetitive fast phenomena and acquiring a large amount of spectral data within a short time.
LASER & PHOTONICS REVIEWS
(2021)
Article
Instruments & Instrumentation
Yoshito Saito, Tetsuhito Suzuki, Naoshi Kondo
Summary: This study investigated the feasibility of using near-infrared spectroscopy to evaluate the coagulation extent and physical properties of tofu. The results showed that NIR spectroscopy can be used to measure the optical properties of tofu samples and assess their coagulation extent and physical properties.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Muhammad Amir Rafiq, Altaf Hussain, Athar Javed, Gul Naz, Jalil-ur Rehman, Muhammad Sohail Akbar
Summary: This study investigated the properties of GeGa2O4, FeGa2O4, GeFe2O4, and FeFe2O4 spinel oxides using ab-initio calculations. The results showed that GeGa2O4 had remarkable physical properties due to Fe occupancy. The Fe-containing oxides were found to be stable in the magnetic phase, while the GeGa2O4 spinel oxide was nonmagnetic. The oxides exhibited different electronic, thermal, magnetic, and optical properties, making them suitable for various applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Engineering, Biomedical
Shikha Garg, Swati Thakur, Aayush Gupta, Gurbinder Kaur, Om Prakash Pandey
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2017)
Article
Chemistry, Physical
Mandeep Kaur, Gurbinder Kaur, O. P. Pandey, K. Singh, V. Kumar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Engineering, Biomedical
Swati Thakur, Shikha Garg, Gurbinder Kaur, Om Prakash Pandey
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2017)
Article
Engineering, Biomedical
Rupinderjeet Bains, Piyush Sharma, Rameez Ahmad Mir, Suninder Jeet, Gurbinder Kaur, Om Prakash Pandey
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2018)
Article
Chemistry, Multidisciplinary
Navdeep Kaur, Gurbinder Kaur, Devender Kumar, K. Singh
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2018)
Article
Materials Science, Ceramics
Mandeep Kaur, Gurbinder Kaur, V. Kumar
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2018)
Article
Materials Science, Ceramics
Mandeep Kaur, Gurbinder Kaur, Om Prakash Pandey, Vishal Kumar
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2019)
Article
Materials Science, Ceramics
Shweta Chalotra, Rameez Ahmad Mir, Gurbinder Kaur, O. P. Pandey
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
Mandeep Kaur, Gurbinder Kaur, V. Kumar
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Review
Materials Science, Biomaterials
Gurbinder Kaur, Vishal Kumar, Francesco Baino, John C. Mauro, Gary Pickrell, Iain Evans, Oana Bretcanu
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2019)
Article
Chemistry, Physical
Rameez Ahmad Mir, Gurbinder Kaur, O. P. Pandey
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Review
Electrochemistry
Gurbinder Kaur, Byron D. Gates
Summary: Lithium ion batteries are widely used in the energy industry due to their high energy density and compact design. Surface coatings have been applied to cathode materials to improve stability and electrochemical performance. The coatings help prevent adverse reactions between the cathode and electrolyte, resulting in longer battery life and higher power capacity.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Proceedings Paper
Physics, Applied
Jagpreet Singh, Tejbir Singh, Gurbinder Kaur, Vishal Kumar
DAE SOLID STATE PHYSICS SYMPOSIUM 2018
(2019)
Article
Materials Science, Ceramics
Savidh Khan, G. Kaur, K. Singh
CERAMICS INTERNATIONAL
(2017)
Article
Engineering, Biomedical
Gurbinder Kaur, N. Sriranganathan, S. G. Waldrop, Purnima Sharma, B. N. Chudasama
BIOMEDICAL MATERIALS
(2017)