Article
Materials Science, Ceramics
Akane Samizo, Makoto Minohara, Naoto Kikuchi, Kenta Ando, Yuta Mazuka, Keishi Nishio
Summary: The study investigated the impact of Nb/Ta ratio on hole-generation efficiency in Sn2Nb2-xTaxO7 with pyrochlore structure, revealing the critical role of the B-site element in suppressing defects and disorder in the Sn4O tetrahedra and thus improving hole-carrier-generation efficiency.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Ganesh Shridhar Hegde, A. N. Prabhu, Y. H. Gao, Y. K. Kuo, V. Raghavendra Reddy
Summary: In this study, high-quality single crystals of potential thermoelectric materials (Bi1-xInx)(2)Se2.7Te0.3 grown by the melt growth technique were investigated for thermoelectric properties between 10 and 350 K. Analysis showed that co-doped samples exhibited significantly enhanced power factor and thermoelectric figure of merit compared to the pristine sample, with the highest ZT value achieved at 350 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Tsutomu Kanno, Hiromasa Tamaki, Masato Yoshiya, Hiroshi Uchiyama, Sachiko Maki, Masaki Takata, Yuzuru Miyazaki
Summary: A study on Mg3Sb2 revealed it to be heavily disordered with Frenkel defects and charge-neutral defect complexes. This compound exhibits exotic n-type dopability and a deviation from the standard temperature dependency in terms of thermal conductivity.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Lukas Ahrens, Olena Tverskoy, Svenja Weigold, Michael Ganschow, Frank Rominger, Jan Freudenberg, Uwe H. F. Bunz
Summary: Doubly alkylene bridged 6,13-diphenylpentacene and analogously bridged azapentacenes have been prepared and are shown to be persistent. These doubly bridged azapentacenes exhibit superior photochemical, oxidative, and thermal stabilities compared to azapentacenes protected by bis(TIPS-ethynyl) substituents. Clipping an azaacene into a large ring is a viable complement in stabilization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Yongzhao Yao, Daiki Wakimoto, Hironobu Miyamoto, Kohei Sasaki, Akito Kuramata, Keiichi Hirano, Yoshihiro Sugawara, Yukari Ishikawa
Summary: Dislocations in beta-Ga2O3 Schottky barrier diodes were observed and their behaviors under forward or reverse bias were studied using synchrotron X-ray topography. Different types of dislocations were identified based on the observation of dislocation lines and their Burgers vectors. The results showed that the dislocations were not static but could glide and multiply under a reverse bias, and this was frequently observed near dislocation bundles originating from screw-type b-axis dislocations. The glide and multiplication occurred even when the dislocations were not directly located in the electrically stressed area of the diodes. It is believed that the screw dislocations acted as pathways for leakage current, which drove the dislocation glide and multiplication.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Maxim Guc, Eduard Bailo, Robert Fonoll-Rubio, Fabien Atlan, Marcel Placidi, Philip Jackson, Dimitrios Hariskos, Xavier Alcobe, Paul Pistor, Ignacio Becerril-Romero, Alejandro Perez-Rodriguez, Francisco Ramos, Victor Izquierdo-Roca
Summary: In this study, a defective chalcopyrite phase was detected in Cu-poor compositions of CIGSe, which may play a critical role in device performance. This finding opens up possibilities for further investigation and development of chalcopyrite-based technologies.
Review
Chemistry, Multidisciplinary
Sarish Rehman, Michael Pope, Shanwen Tao, Eric McCalla
Summary: This article reviews the advancements in lithium sulfur batteries (LSBs) and emphasizes the role of in situ methodology. By implementing in situ characterization techniques, a better understanding of the mechanisms in LSBs can be achieved, addressing key issues for their commercialization.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ilhame Assahsahi, Bogdan Popescu, Monica Enculescu, Magdalena Galatanu, Aurelian-Catalin Galca, Rachid El Bouayadi, Driss Zejli, Andrei Galatanu
Summary: The study investigates the influence of preparation route on the properties of Mg2Si0.4Sn0.6 solid solutions, demonstrating improved thermoelectric performance through optimized synthesis and doping with V and Sb. Despite a slight increase in thermal conductivity from doping, a peak ZT value of 1.15 at 723K is achieved, representing a 20-fold improvement over the undoped material.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Huaqiang Zhuang, Yiping Huang, Liqin Lin, Wentao Xu, Xiaobin Liu
Summary: In this study, BiOCl nanosheets with oxygen vacancies were designed and synthesized using a two-step hydrothermal strategy to enhance photocatalytic performance. The optimal BiOCl nanosheets with oxygen vacancies showed nearly complete degradation of RhB in 18 minutes under visible light irradiation. The improved performance can be attributed to the introduction of surface oxygen vacancies, which enhance the light absorption efficiency of BiOCl and improve the separation and transfer efficiency of photo-generated electron-hole pairs. Moreover, superoxide radicals were identified as the main active species.
Article
Materials Science, Multidisciplinary
Bing Li, Bahman Nasiri-Tabrizi, Saeid Baradaran, Chai Hong Yeong, Wan Jefrey Basirun
Summary: An ultrasonic-assisted preparation strategy was used to synthesize a potential biomaterial for bone regeneration, consisting of in-situ hydroxyapatite-reduced graphene oxide nanocomposite with optimal crystallite size and plate-shaped HA nanocrystals. Increasing power led to enhanced chemical interactions between rGO and HA, resulting in higher perturbation levels.
Article
Chemistry, Multidisciplinary
Abdolhossein Sa'aedi, Alaa Ahmed Akl, Ahmed Saeed Hassanien
Summary: This article describes the synthesis and characterization of pure ZnO and Rb-doped ZnO nanoparticles using sol-gel technology. The samples were analyzed using X-ray diffraction, energy-dispersive X-ray spectroscopy, and field-emission scanning electron microscopy. The results showed that RbxZn1-xO NPs have a hexagonal wurtzite structure and their properties change with the Rb concentration. The particle size of the NPs decreased with increasing Rb concentration, and the compositions were in agreement with the selected elements.
Article
Chemistry, Physical
A. Bandyopadhyay, B. J. Sarkar, S. Sutradhar, J. Mandal, P. K. Chakrabarti
Summary: By incorporating Gd3+ ions instead of Ce4+ ions in cerium oxide lattice, improvements were made in its magneto-dielectric properties. Nonlinearity due to magnetic ordering was introduced in the doped sample Ce0.90Gd0.10O2-delta, indicating a transition to ferromagnetic phase. Transmission electron microscopy study revealed important morphological behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Vitalii Ponomar
Summary: In this study, spinel ferrites with tunable magnetic properties were successfully synthesized by thermal treatment, and the changes in magnetization and Curie temperature were observed through different temperature treatments.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Multidisciplinary
A. Manimekalai, R. Parimaladevi, M. Umadevi
Summary: Tungsten oxide nanoparticles and indium/tungsten oxide nanocomposites were successfully synthesized by the hydrothermal method. The results showed that the integration of indium in the tungsten oxide layer can enhance the power conversion efficiency of dye-sensitized solar cells due to electron transfer and reduced back-recombination.
Article
Chemistry, Physical
Linda Klag, Abhijeet Gaur, Matthias Stehle, Sebastian Weber, Thomas L. Sheppard, Jan-Dierk Grunwaldt
Summary: This study systematically investigated the activity and selectivity of Bi-Mo-Co-Fe oxide catalysts in selective oxidation of isobutene. The results showed that the activity and selectivity of the catalysts depend on the variety and interaction of metal oxide phases, and the reducibility of Fe3+ is crucial for catalytic activity.
Article
Materials Science, Multidisciplinary
Farida Ashraf Ali, Dilip Kumar Mishra, Rasmita Nayak, Binita Nanda
Summary: Rapid population growth and industrial development have led to the rapid consumption of natural resources and increased pollution. Monitoring and controlling pollutants are necessary to avoid environmental disasters. Recent advancements in material sciences have introduced solid-state gas sensors as an effective alternative for real-time detection. This review article focuses on chemical sensors that measure gas concentration using solid-state platforms, specifically electrochemical, capacitance, and heterojunction-based sensors. The article also summarizes the potential of porous metal oxide-based sensors in enhancing unique properties for solid-state gas sensing.
BULLETIN OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Bijaylaxmi Biswal, Dilip Kumar Mishra
Summary: Polycrystalline ceramic specimens of three different alumino-silicate solid solutions have been successfully synthesized by thermal plasma sintering technique. The ceramics consist of mullite and sillimanite phases, and exhibit high density and homogeneous grain distribution. These materials have high dielectric constant and low dissipation factor, with conductivity increasing with temperature.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Usharani Panda, Dilip Kumar Mishra, Sushanta Kumar Kamilla, V. Rama Rao Medicherla, Vasant Sathe, Jyoshnarani Mohapatra, Pravanjan Mallick
Summary: Ni-doped SnO2 powder samples were synthesized and characterized by various techniques, showing nanocrystalline rutile tetragonal structure, decreased bandgap with increasing Ni concentration, and confirmation of room temperature ferromagnetism. The incorporation of Ni ions into the lattice of pure SnO2 was confirmed through shifts in vibrational peaks observed in FTIR spectra.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Applied
S. Jena, D. K. Mishra, S. N. Sarangi, P. Mallick
Summary: In this study, α-Fe2O3/NiBixFe2-xO4 composite materials were synthesized by a wet chemical route, and it was found that Bi doping significantly affects the grain size, phase fraction, and magnetic properties of the nanocomposites.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Chemistry, Physical
Sushree Saraswati Panda, Hara Prasada Tripathy, Priyabrata Pattanaik, Dilip Kumar Mishra, Sushanta Kumar Kamilla, Asimananda Khandual, William Holderbaum, Richard Sherwood, Gary Hawkins, Shyam Kumar Masakapalli
Summary: A high value-added product, gahnite ferroan nano composite, was successfully synthesized from a mixture of fly ash silica and ZnO using a low-cost technique. The synthesized product showed high-purity gahnite ferroan composite with cubical grains, and exhibited optical properties making it suitable for UV protection and as a band pass filter for UV light. The material's dielectric properties also showed temperature-dependent behavior with negative temperature coefficient resistance associated with increased ac conductivity at higher temperatures.
Article
Chemistry, Physical
Sekhar C. Ray, Dilip Kumar Mishra, Atala Bihari Panda, H. T. Wang, Sriparna Bhattacharya (Mitra), W. F. Pong
Summary: TiO2 thin films were prepared using the reactive magnetron cosputtering technique, and the modification in the electronic structure with the increase of annealing temperatures was studied. The results showed that the annealing temperature had a significant impact on the structure and bonding of the TiO2 thin films, leading to changes in the electronic properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Ceramics
Bijaylaxmi Biswal, Dilip Kumar Mishra, Jyoshnarani Mohapatra, Satyanarayan Bhuyan
Summary: This study synthesized aluminosilicate ceramics of three different compositions using the conventional high-temperature solid-state reaction technique and systematically investigated their properties. The results showed that these ceramics have good physical and electrical properties, making them suitable for applications such as electronic substrates, packaging materials for high-frequency circuits, and infrared transmitting window materials.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Physics, Multidisciplinary
Bijaylaxmi Biswal, Satyanarayan Bhuyan, Dilip Kumar Mishra
Summary: Magnesia-stabilized ZrO2 @mullite composites were synthesized using conventional sintering and thermal plasma sintering techniques. The composites exhibited stable phase structure, specific bonding structure, and good microstructure. They had low dielectric constant and loss factor, and showed a non-Debye-type relaxation process at high temperatures.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Nanoscience & Nanotechnology
Sekhar C. Ray, Dilip Kumar Mishra, H. T. Wang, Sriparna Bhattacharya (Mitra), W. F. Pong
Summary: In this study, TiO2 and r-GO were synthesized separately using radio frequency reactive magnetron sputtering and the improved Hummers method, respectively. The (r-GO/TiO2)/Si composite thin film was prepared, and the effects at the interface and the tuning of electronic structure and magnetic performance were comprehensively studied.
Article
Materials Science, Multidisciplinary
Bijaylaxmi Biswal, Samarjit Pattnayak, Dilip Kumar Mishra
Summary: The Al6Si2O13-ZrO2 Mullite@zirconia ceramic composite was successfully synthesized by conventional sintering and plasma sintering methods, and its properties were characterized using various techniques. The composite exhibited frequency-temperature-dependent dielectric behavior, making it suitable for dielectric substrates and high-frequency electronic circuit packaging materials. Additionally, the composite showed semiconducting properties, making it useful for electrical insulation in high-frequency electronic circuits.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
Usharani Panda, Dilip Kumar Mishra, Sushanta Kumar Kamilla, V. Rama Rao Medicherla, Vasant Sathe, Jyoshnarani Mohapatra, Pravanjan Mallick
Summary: In this study, various concentrations of Mn-doped SnO2 powder system were synthesized using the autocombustion method. The successful integration of Mn in SnO2 lattice was confirmed, leading to enhanced conductivity and paramagnetism.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Hara Prasada Tripathy, Priyabrata Pattanaik, Dilip Kumar Mishra, William Holderbaum
Summary: Air conditioning was not common in many cities worldwide before 2000, but now it has become popular. However, this has negative impacts on the climate and raises concerns about energy usage. To ensure a healthy and comfortable living environment, it is important to control indoor temperature and air flow. In this manuscript, a sensory system is introduced that can automatically detect relative humidity and temperature, providing a solution for regulating air conditioning.
Article
Crystallography
Bijaylaxmi Biswal, Dilip Kumar Mishra
Summary: The addition of Y2O3 stabilizes the metastable tetragonal phase of ZrO2 in ZrO2@mullite composites, and forms a fused, dense, and interconnected microstructure. The conventional and plasma sintered composites exhibit different dielectric and conductivity properties. The grain boundary conductivity is higher than the grain conductivity, and thermally activated conduction mechanisms are observed. The optical bandgap also varies between the two types of composites.
CRYSTAL RESEARCH AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Sunil Ku. Sahu, Sushree Ipsita, P. K. Mahapatra, D. K. Mishra
Summary: Tunneling across a double barrier system in the presence of a transverse magnetic field is studied. The magnetic field-induced coupling of transverse momentum and z-direction motion of the electron selects a minimum value of transverse momentum for tunneling. With increasing magnetic field, resonant tunneling occurs over a wider range of resonant energy, resulting in a two-dimensional resonance structure in the plane of transverse momentum and z-direction motion. A formula for current density based on these observations is developed, and the effect of Zeeman splitting on tunnel current is discussed.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Dipti R. Sahu, Cheng-Yen Hung, Sheng-Chang Wang, Jow-Lay Huang
Summary: In this study, nanostructured tungsten trioxide (WO3) films with improved cyclic stability were prepared using a low-cost conventional spin coating method. The addition of a polystyrene intermediate layer created a porous structure in the WO3 films, which exhibited stable coloration efficiency, durability, and fast response in the electrochromic cycle. The porous crystalline WO3 films had higher transmittance and coloration efficiency than nonporous films, making them promising for applications in displays, rear view mirrors, and smart windows.
MATERIALS ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
