Article
Metallurgy & Metallurgical Engineering
Mei Zhang, Wen-jun Wang, Tie-chui Yuan, Si-yao Xie, Rui-di Li, Zhi-hui Zhou, Yun-bao Xu
Summary: Dense B4C material was fabricated using spark plasma sintering method, and the mechanisms of densification and grain growth were investigated. The results show that there are two sintering periods, densification period and grain growth period, and the mechanisms involve grain boundary sliding, dislocation climb, grain boundary diffusion and volume/liquid-phase diffusion.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
M. Bousseksou, G. Gutierrez, Y. Pipon, D. Gosset, N. Moncoffre
Summary: This study aims to investigate the Li diffusion in B4C. The results showed that the thermal diffusion into the grain boundaries in B4C is about four orders of magnitude higher than into the grains. These findings are of great importance for material selection and safety control in nuclear reactors.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Ceramics
Kecheng Ye, Zhijiang Wang
Summary: In this study, a single-phase B4C ceramic was fabricated using fast hot-pressing sintering, and it was found that the samples synthesized under the optimal sintering condition exhibited high mechanical properties, with twins playing a crucial role in toughening.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Coatings & Films
Sen Chen, Jiaxuan Ren, Douhao Yang, Lijun Sang, Bowen Liu, Qiang Chen, Zhongwei Liu
Summary: Manganese nitride films were successfully fabricated using plasma enhanced atomic layer deposition (PEALD) with bis(N,N'-di-tert-butylacetamidinate)manganese [Mn(amd)(2)] as the manganese precursor and ammonia plasma as a coreactant. The deposited film exhibited continuous and smooth growth, with a growth rate of 0.037 nm/cycle, and an α-Mn3N2 crystal structure confirmed by X-ray diffraction measurement. The primary deposition mechanism was investigated using in situ optical emission spectroscopy and quartz crystal microbalance. The deposited manganese nitride film showed excellent barrier performance against copper diffusion at the insulator/copper interface.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Materials Science, Multidisciplinary
Kellen D. Traxel, Amit Bandyopadhyay
Summary: Through adjusting input processing parameters, a oxidation-resistant titanium matrix composite with reinforced microstructure composed of borides, carbides, and nitrides was successfully developed, showing improved hardness and oxidation resistance compared to commercially pure titanium.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Shuhui Chen, Lingyue Tan, Chenlin Yang, Peixin Chen, Anmin Hu, Huiqin Ling, Ming Li, Tao Hang
Summary: This study compared the barrier performance of four different barrier layers for inhibiting the formation of Cu-Sn intermetallic compounds, with amorphous Co-W exhibiting the best barrier performance. The growth rates of IMCs were limited by diffusion species in different samples, with the diffusion flux of Ni from Ni-W layer being larger than that of Co from Co-W layer.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Yu Qiao, Siyuan Nie, Weihan Li, Enzhi Liu, Xinchang Wang
Summary: Systematic research combining molecular dynamics and experiments is conducted to investigate cobalt diffusion during the initial stage of diamond growth on cemented carbide. Factors such as temperature, WC grain size, initial cobalt distribution, diamond crystal orientation, and grain composition of polycrystalline diamond significantly influence cobalt diffusion. Cobalt tends to diffuse along grain boundaries, with higher activation energy in smaller grain sizes. However, strong interaction between cobalt and grain boundaries hinders cobalt diffusion to the diamond surface.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Omid Velayatipour, Leila Nikzad, Mohammad Farvizi
Summary: In this study, NiTi-x wt.%B4C (x= 0, 2, and 4) composites were prepared and the effects of boron carbide reinforcement addition on the microstructure and wear behavior were investigated. The results showed that the addition of boron carbide increased the hardness and wear resistance of the composite samples, and changed the wear mechanisms.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Kecheng Ye, Tetiana Prikhna, Chunping Hu, Zhijiang Wang
Summary: The study investigates the introduction of sub-micron B4C powder to enhance the mechanical properties of ceramic materials. By adjusting the content of sub-micron powder, a high-performance sub-micron/micron mixed B4C ceramic with higher relative density and mechanical properties was successfully constructed.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Yujian Dang, Xu Li, Zekun Chen, Bo Ma, Xudong Zhao, Yantao Chen
Summary: This study demonstrates the significance of constructing hierarchical CoO@MoN heterostructure nanowire arrays to enhance the performance of electrocatalysts for hydrogen evolution. The experimental results show that CoO@MoN exhibits excellent activity in alkaline medium, and theoretical computations confirm the advantages of this heterostructure.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Applied
A. Gupta, T. Biswas, A. K. Singh
Summary: The study investigates the formation mechanism and properties of B4C nanosheets using theoretical simulations, revealing unique metallic behavior attributed to surface reconstructions. The results provide insights for experimental synthesis efforts and future applications research in nanoelectronic and thermoelectric fields.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
C. J. Marvel, K. D. Behler, J. C. LaSalvia, R. A. Haber, M. P. Harmer
Summary: This study investigates the potential of grain boundary complexion engineering to improve fracture resistance of boron-based ceramics. It reveals the presence of silicon segregation at grain boundaries and quantifies the changes in grain boundary energy due to silicon segregation, leading to improvements in fracture resistance.
Article
Materials Science, Multidisciplinary
Jingjing Wang, Weihua Su, Jinmeng Zhang, An'an Zhou, Hua Bai, Tongyi Zhang
Summary: This study presents a flexible composite electrode composed of compact polyaniline and reduced graphene oxide sheets, demonstrating ultrahigh volumetric specific capacitance and good rate performance. It is found that reduced graphene oxide sheets act as both conductive filler and diffusion barrier. By optimizing the content of reduced graphene oxide, a large volumetric specific capacitance and good rate performance are achieved.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
Min-Ji Ha, Hyunchang Kim, Jeong-Hun Choi, Miso Kim, Woo-Hee Kim, Tae Joo Park, Bonggeun Shong, Ji-Hoon Ahn
Summary: As memory devices become smaller, the increase in metal line resistance is a critical issue. This study proposes a new ultralow-resistivity MoCx thin film as a candidate for metal lines, which was successfully deposited using a halogen-free precursor.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Vladimir G. Dubrovskii
Summary: A growth model is presented to describe the length and radius evolution of nanowires during low-temperature metal-catalyzed or selective area growth, considering surface diffusion transport and radial growth. The growth process is shown to proceed in two steps, leading to a non-linear increase in length with time and radial growth. The nanowire radii converge to a stationary value in the large time limit, showing a size-narrowing effect.
Article
Chemistry, Multidisciplinary
Zan Gao, Yosyp Schwab, Yunya Zhang, Ningning Song, Xiaodong Li
ADVANCED FUNCTIONAL MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Ningning Song, Yunya Zhang, Zan Gao, Xiaodong Li
Article
Chemistry, Multidisciplinary
Yunya Zhang, Ningning Song, Jiajun He, Ruoxi Chen, Xiaodong Li
Article
Chemistry, Physical
Ningning Song, Zan Gao, Yunya Zhang, Xiaodong Li
Article
Multidisciplinary Sciences
Yunya Zhang, Frederick M. Heim, Jamison L. Bartlett, Ningning Song, Dieter Isheim, Xiaodong Li
Article
Multidisciplinary Sciences
Ningning Song, Zan Gao, Xiaodong Li
Article
Chemistry, Physical
Ningning Song, Ruoxi Chen, Yingchao Yang, Xiaodong Li
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Review
Chemistry, Multidisciplinary
Ningning Song, Jianlin Zhang, Jiao Zhai, Juanji Hong, Chang Yuan, Minmin Liang
Summary: Ferritins are spherical iron storage proteins composed of 24 subunits of heavy-chain ferritin (HFn) and light-chain ferritin (LFn), forming a hollow nanocage with unique nanocage structure. Human HFn shows potential for tumor-targeted delivery of various cargo molecules due to its intrinsic tumor-targeting property and unique nanocage structure.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Chemistry, Analytical
Yinuo Zhang, Yue Yu, Changbin Zhang, Ningning Song, Zhanjun Guo, Minmin Liang
Summary: Formaldehyde is a prominent indoor pollutant that causes health-related problems. Current detection methods are limited by volatile organic chemical interference. This study presents a highly sensitive and selective method for formaldehyde detection based on aldehyde dehydrogenases. The method shows a broad detection range and low detection limit, with higher specificity compared to standard spectrophotometry.
ANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
Cole A. Love-Baker, Timothy M. Harrell, Alexander Scherschel, Zan Gao, Ningning Song, Kenneth R. Brown, Frederic Vautard, Ilia Ivanov, James Klett, Xiaodong Li
Summary: Polyacrylonitrile-based carbon fibers have been the dominant choice for the industry, but their high cost has limited their use in high-volume structural applications. Therefore, researchers have been actively seeking a low-cost alternative carbon fiber precursor. In this study, carbon fibers were successfully produced from polyamide-6 using metal salt impregnation and thermo-oxidative stabilization. The results showed significant changes in morphology, crystallinity, elemental composition, and thermal stability during the processing stages. The findings provide valuable insights and guidelines for further research in the production of carbon fibers from polyamide-6.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zhe Li, Fangning Liu, Chuanxia Chen, Yuanyuan Jiang, Pengjuan Ni, Ningning Song, Yang Hu, Shibo Xi, Minmin Liang, Yizhong Lu
Summary: This study demonstrates that the oxidase-like activity of single-atom Co catalysts greatly depends on their local N coordination around the Co catalytic sites. We synthesized a series of Co single-atom catalysts with different nitrogen coordination numbers (Co-Nx(C), x = 2, 3, and 4) and demonstrated that the oxidase-like activity of single-atom Co catalysts could be effectively tailored by fine-tuning the N coordination. Among the studied single-atom Co catalysts, the Co-N3(C) with three-coordinate N atoms shows the optimum oxygen adsorption structure and robust reactive oxygen species (ROS) generation, thus presenting the preferable oxidase-like catalytic activity. This work facilitates the future development of rational nanozyme designs for targeting reactions at the atomic level.
Article
Chemistry, Multidisciplinary
Ningning Song, Yue Yu, Yinuo Zhang, Zhengdi Wang, Zhanjun Guo, Jianlin Zhang, Changbin Zhang, Minmin Liang
Summary: With the progress of nanoscience and nanotechnology, nanomaterials have the potential to imitate the intricate nanostructures and sophisticated functions of biology. Inspired by antibacterial nanostructures found on insect wing surfaces, researchers have developed a self-adaptive hierarchical nanostructure called NiCo2O4 nanozyme, which can capture bacteria of various forms through physico-mechanical interaction. The biomimetic structure also exhibits peroxidase-like catalytic activity that generates reactive oxygen species to disrupt bacterial membranes and induce bacterial apoptosis. This mechano-catalytic coupling property of the NiCo2O4 nanozyme allows for extensive and efficient antibacterial applications without concerns of antimicrobial resistance.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Clifton H. Bumgardner, Brendan P. Croom, Ningning Song, Yunya Zhang, Xiaodong Li
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Review
Chemistry, Physical
Yunya Zhang, Zan Gao, Ningning Song, Jiajun He, Xiaodong Li
MATERIALS TODAY ENERGY
(2018)
Article
Crystallography
Jianzheng Hu, Long Yan, Ning Zhou, Yao Chen, Xiaoni Yang, Lianqiao Yang, Shiping Guo
Summary: The effect and mechanism of carrier gas velocity, V/III ratio, and carrier gas velocity match on the growth rate of AlN were investigated in this study. The results showed that the growth rate of AlN initially increased with hydrogen flow rate, reached saturation, and then decreased monotonically. The turning point value depended on the equipment and process. By increasing the MO VM, the growth rate of AlN could be improved, but the uniformity deteriorated due to turbulence and loss of uniform boundary layer. High quality AlN films were successfully grown on nano-patterned sapphire substrates with improved crystalline quality and atomic smooth surfaces.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Tingting Ma, Yang Li, Kangning Sun, Qinglin Cheng, Sen Li
Summary: This study investigates the melting process and nucleation behavior of sodium crystals using molecular dynamics simulation. The results show good agreement between simulated and experimental values for the melting temperature, density, and radial distribution function of sodium. The diffusion coefficient of liquid sodium increases linearly with temperature, and the homogeneous nucleation rate of melting in superheated sodium crystal exponentially increases with temperature. The findings provide theoretical support for applications involving heat and mass transfer in sodium-related systems.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Hisato Nishii, Shintarou Iida, Akira Yamasaki, Takumi Ikenoue, Masao Miyake, Toshiya Doi, Tetsuji Hirato
Summary: Epitaxial V2O3 films were fabricated on sapphire substrates using mist chemical vapor deposition (mist CVD) method, eliminating the need for high vacuum conditions. The films can be grown on sapphire substrates even under atmospheric pressure, with the optimal growth temperature at 823 K. The films grown at 823 K exhibit a metal-insulator transition at approximately 155 K. The film on C-plane sapphire exhibits a lower transition temperature compared to those on R- and A-plane sapphire substrates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Jani Jesenovec, Kevin Zawilski, Peter Alison, Stephan J. Meschter, Sambit K. Saha, Andrew J. Sepelak, Peter G. Schunemann
Summary: In this study, NiSb needles were successfully formed in InSb by manipulating the growth rate and adding NiSb. These needle structures in InSb can be used to tune the magnetoresistance of devices. Additionally, undoped InSb crystals demonstrated good infrared transmission at low growth rates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
D. Joseph Daniel, P. Karuppasamy, H. J. Kim
Summary: The 2-amino 4-methyl pyridinium oxalate (2A4MPO) compound was synthesized and its crystal structure, functional groups, thermal stability, electrical properties, and third-order nonlinear optical properties were studied. The results demonstrate that the synthesized crystal has good structural integrity, thermal stability, and potential for third-order nonlinear optical applications.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
C. W. Lan
Summary: The past two decades have witnessed a significant transformation in solar silicon crystal growth, especially in the competition between multi-crystalline silicon (Multi-Si) and mono-crystalline silicon (Mono-Si). The demand for this crucial material has exponentially surged, with silicon solar panels capturing over 95% of the global PV market share. The advancements in crystal growth technology during this period have set historical benchmarks, with the market share shifting from high-performance multi-crystalline silicon (HPM-Si) to CZ silicon.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peiyao Hao, Lili Zheng, Hui Zhang
Summary: A novel design of argon gas tube for removing impurities during silicon ingot growth was developed, and numerical simulations showed that it can effectively extract SiO.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Geetika Sahu, Chanchal Chakraborty, Subhadeep Roy, Souri Banerjee
Summary: This article discusses the novel fractal nature of hydrothermally synthesized MoS2 QDs. By adjusting the reaction time, the study found that the average size of QDs increases and then decreases with longer reaction times. STEM images indicate that shorter reaction times lead to sheet formation, while extended reaction times cause sheets to fragment into QDs.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Pengjian Lu, Wei Huang, Junjun Wang, Haitao Yang, Shiyue Guo, Bin Li, Ting Wang, Chitengfei Zhang, Rong Tu, Song Zhang
Summary: A systematic study on the tetramethylsilane-hydorgen (TMS-H-2) system for the deposition of pure single-crystal SiC by high-temperature chemical vapor deposition (HTCVD) method is conducted. The study investigates the effect of temperature, pressure, and H-2:TMS ratio on the deposition conditions and provides a theoretical basis and guidance for improving the quality and cost of industrial production of single-crystal SiC.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Xinyu Jiang, Liangliang Liu, Yanqing Liu, Yan Wang, Zhaoping Hou
Summary: Investigation on the preparation of anisometric templated textured high entropy or multi-element doped ferroelectric ceramics was conducted using A-site disordered niobate microcrystals. The effects of process parameters on the morphology and chemical composition were studied, and the photocatalytic properties of the microcrystals were evaluated.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Mobashsara Tabassum, Md. Ashraful Alam, Sabrina Mostofa, Raton Kumar Bishwas, Debasish Sarkar, Shirin Akter Jahan
Summary: In this study, high crystallinity copper nanoparticles were synthesized by altering the reaction medium at low temperatures. The results show that changing the reaction medium can reduce the surface energy of precursors and promote the formation of highly crystalline copper nanoparticles.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Ivan Bodnar, Vitaly V. Khoroshko, Veronika A. Yashchuk, Valery F. Gremenok, Mohsin Kazi, Mayeen U. Khandaker, Tatiana I. Zubar, Daria I. Tishkevich, Alex Trukhanov, Sergei Trukhanov
Summary: This work presents the production of single crystals of Cu2ZnGeSe4, a semiconducting quaternary compound, using a gas chemical method with iodine as a transporter. The phase state, crystal structure, and lattice constants of the synthesized samples were refined and determined. The band gap of Cu2ZnGeSe4 was calculated using transmission spectrum and it was found that the band gap increases by 12% with decreasing temperature in the range of 20-300 K.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Timur Malin, Igor Osinnykh, Vladimir Mansurov, Dmitriy Protasov, Sergey Ponomarev, Denis Milakhin, Konstantin Zhuravlev
Summary: The effect of growth temperature on the buffer leakage currents of GaN-on-Si layers was investigated. It was found that higher growth temperature results in lower leakage currents. The defects in GaN layers grown at different temperatures were studied using photoluminescence technique, and a correlation between leakage currents, structural perfection, and donor concentration in GaN-on-Si layers was established. It was also observed that reduced growth temperature leads to the formation of inversion domains.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Thi-Hoai-Thu Nguyen, Jyh-Chen Chen
Summary: The effect of heater power control on heat, flow, and oxygen transport for CCz crystal growth was studied. Shorter upper side heater design could improve crystal quality and growth, but with higher power consumption.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peter Rudolph
Summary: This article presents an overview of selected contributions to the development of crystal growth technology by the Laudise Prize awardee 2023. It discusses various aspects such as shaped crystal growth, the correlation between melt structure and crystal quality, control of intrinsic defects and inclusions, prevention of dislocation cell patterns, and melt growth experiments under a travelling magnetic field.
JOURNAL OF CRYSTAL GROWTH
(2024)
