Article
Chemistry, Physical
Okkyun Seo, Jaemyung Kim, Jiayi Tang, L. S. R. Kumara, Koji Kimoto, Kazushi Miki, Akifumi Matsuda, Mamoru Yoshimoto, Osami Sakata
Summary: This research focuses on the influence of atomic arrangement on the electrical and catalytic properties of oxide thin films. The atomic arrangement of LiNiO2 thin films was investigated by uniaxial compression and annealing at 600℃ on sapphire substrates. Thin films with a rock-salt structure were grown using pulsed laser deposition method at room temperature. It was observed that the as-grown thin films transformed from a rock-salt to a layered structure after uniaxial compression at 600℃, and the layer thickness of the latter structure increased with increasing uniaxial compression pressure. Uniaxial compression provides a useful tool for oxide thin film research, contributing to the development of new functional oxide materials and adjustment of the atomic ordering of cation materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Food Science & Technology
Kotaro Matsui, Takamichi Kamigaki, Ryota Wakui, Yuri Nishino, Yoshiko Ito, Atsuo Miyazawa, Koichiro Yoshioka, Makoto Shiota
Summary: The physical properties of butter are influenced by its microstructure, and a novel observation method using AFM without pretreatment process was proposed in this study to observe the fat crystal structure. Measurements of milk fat-crystalline nanoplatelets were conducted using TEM and SAXS, revealing the thickness and structure of the fat crystals. Through this observation method, the relationship between the physical properties of butter and its fat crystal network can be discerned, benefiting the bread and confectionery industries in improving butter processing conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Shazia Naheed, Muhammad Shahid, Rashida Zahoor, Zumaira Siddique, Nasir Rasool, Sajjad Haider, Shaukat Khan
Summary: This study focused on the synthesis and characterization of polyurethane elastomers based on xanthan gum and titanium dioxide, revealing thermal stability, micro-phase separation, antimicrobial activity, and hydrophilicity. The results demonstrate the potential of these polymers in various applications.
Article
Chemistry, Physical
Sizhan Liu, Patrick J. West, Hui Zhong, Jianming Bai, Eli Stavitski, Denis Leshchev, Amy C. Marschilok, Esther S. Takeuchi, David C. Bock, Kenneth J. Takeuchi
Summary: In intercalation materials, the kinetics and uniformity of mass transport across the nanocrystalline domains are crucial for the structural reversibility and transport capability at the macroscopic level. This study investigates the origins of compositional and orientational-dependent phase separations in LiNi0.8Mn0.1Co0.1O2 during electrochemical cycling, providing insights into crystallographic orientation-dependent phase inhomogeneity under fast charge and extended cycling.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Amanda R. Haines, John C. Hemminger
Summary: This study investigates the stability of CuOx and TiO2 nanoparticles on a HOPG substrate, revealing that reducing potentials can cause mobility and agglomeration of TiO2 nanoparticles, affecting their diameter and structure. These results highlight the importance of stability studies in understanding degradation mechanisms of model electrochemical catalysts.
Article
Physics, Multidisciplinary
D. Stryukov, A. Pavlenko, Ya Yu Matyash, A. Nazarenko
Summary: High quality Ba2NdFeNb4O15 epitaxial films with thicknesses ranging from 10 nm to 1 μm have been successfully fabricated by RF cathode sputtering. The films exhibit orientational domains with a 18.4-degree in-plane rotation and tetragonal unit cell. The surface of the films is smooth and the presence of orientational domains does not affect the surface relief. X-ray diffraction, atomic force microscopy and energy dispersive elemental analysis confirm the absence of impurities in the obtained films.
Article
Chemistry, Inorganic & Nuclear
Nicolas Zapp, Denis Sheptyakov, Alexandra Franz, Holger Kohlmann
Summary: Substituting hydrogen for oxygen atoms in metal oxides influences the solid-state properties, and holmium hydride oxide exhibits high thermal stability and inertness towards air, with an ordered fluorite superstructure.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Edyta Pesko, Artem Lynnyk, Aldona Zalewska, Roman Puzniak, Anna Krzton-Maziopa, Stanislaw Kus
Summary: The electrochemical intercalation of alkali metal - pyridine adducts into iron selenide matrix was investigated. The charge transfer resistance increased with reaction time, and structural transition was observed. The introduction of guest species and the magnetic and superconducting properties of the samples were confirmed through various experimental techniques.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Crystallography
M. Mitsuhara, T. Gotow, T. Hoshi, H. Sugiyama, M. Takenaka, S. Takagi
Summary: Comparisons were made between the structural and photoluminescence properties of 1% tensile-strained InGaAs and GaAsSb layers grown on InP substrates, revealing that the surface roughening on the GaAsSb layer proceeds more slowly with increasing layer thickness. Experimental results obtained through X-ray diffraction and photoluminescence measurements strongly reflected the differences in morphological evolution between the InGaAs and GaAsSb layers. Cross-sectional TEM observations showed that the surface morphology of the InGaAs and GaAsSb layers is dependent on whether facets are formed on the surface.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Materials Science, Ceramics
T. S. Ilina, E. A. Skryleva, A. Yu Ermakov, T. A. Sviridova, F. O. Milovich, B. R. Senatulin, A. M. Kislyuk, E. D. Politova, G. M. Kaleva, D. A. Kiselev, Yu. N. Parkhomenko
Summary: This study investigates the properties of KNN ceramics with different ferroelectric phase content using various techniques. The correlation between PFM image, SEM phase and EDS phase composition is found. It is discovered that specimens with low ferroelectric phase content contain secondary phases with different composition and structure than the perovskite. XPS analysis reveals the presence of two different chemical states of potassium ions, inside and outside the perovskite lattice. The correlation between ferroelectric properties and K2 concentration can serve as a reliable indicator.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
M. Vadivel, R. Ramesh Babu, M. Sridharan
Summary: This study reports the characteristics of Cr3+- and Zn2+-substituted CoFe2O4 thin films prepared by solution-based spray pyrolysis method. The results show that the substitution of transition metal ions significantly affects the surface topography and gas-sensing behavior of the films. Cr3+-substituted CoFe2O4 thin films exhibit excellent sensing behavior towards NH3 gas at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ya. Yu. Matyash, D. V. Stryukov, A. V. Pavlenko
Summary: This paper presents the study results of barium-neodymium ferroniobate films with thicknesses of 180 and 980 nm obtained by RF cathode sputtering. Through X-ray diffraction and magnetic force microscopy, it was found that the films are single-phase, epitaxial, and free from magnetic impurities. Atomic force microscopy data indicates that the growth of the films follows the Volmer-Weber mechanism.
Article
Materials Science, Ceramics
Ahlem Bendaoued, Mouna Messaoud, Omar Harzallah, Sophie Bistac, Rached Salhi
Summary: In this paper, TiO2 was prepared by the sol-gel process and reinforced the polypropylene matrix using supercritical drying of ethanol, while maintaining thermal and mechanical properties and ensuring good interface compatibility. The use of 5wt.% TiO2 was found to effectively increase the crystallinity and dynamic and static mechanical properties of the polypropylene matrix.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yuyao Zhang, Xiaoying Zhu, Bokai Zhu, Chiheng Chu, Baoliang Chen
Summary: The hydrophobicity of nanomaterials plays a crucial role in various interfacial phenomena. However, it is challenging to study the high-resolution surface hydrophobicity at the nanoscale. In this study, a chemical force microscopy technique is used to profile in situ hydrophobicity images with nanoscale resolution, providing significant improvement compared to traditional methods. The method is applied to recognize the spatial fine structure hydrophobicity of different materials and reveals new findings regarding the hydrophobicity of graphene oxides (GO) and the influence of wrinkles/edges on hydrophobicity. Furthermore, the technique enables the observation of local oxidation variation during interfacial reactions.
Article
Nanoscience & Nanotechnology
Calvin D. Quilty, Garrett P. Wheeler, Lei Wang, Alison H. McCarthy, Shan Yan, Killian R. Tallman, Mikaela R. Dunkin, Xiao Tong, Steven Ehrlich, Lu Ma, Kenneth J. Takeuchi, Esther S. Takeuchi, David C. Bock, Amy C. Marschilok
Summary: Ni-rich NMC is a promising cathode material for Li-ion batteries, but cycling at higher voltages within the voltage window of 3-4.7 V leads to increased capacity initially, but also results in suppressed redox reactions of Ni and Co, higher structural distortion, transition metal dissolution, higher impedance, and greater capacity fade over time.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)