Article
Nanoscience & Nanotechnology
Yaqiang Wang, Jiadong Zuo, Kai Wu, Jinyu Zhang, Gang Liu, Jun Sun
Summary: The hardness and strain-rate sensitivity of nano Mo thin films increased with decreasing columnar size due to the confined slip of dislocations in the columnar grains.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Syed Ghause Ibrahim
Summary: In the emerging field of research, the focus is on nanomaterials which preserve the properties of a good material with advantages in size and cost. The research work focuses on nanocrystalline manganese sulfide thin films grown using spray pyrolysis technique on glass substrates, showing n-type conductivity and a resistivity value of 6.232 x 10^6 ohm cm.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
J. Chakraborty, T. Oellers, R. Raghavan, A. Ludwig, G. Dehm
Summary: The microstructure evolution and stress development in Cu-Zr alloy thin films were studied using GIXRD and STEM, revealing the generation of dislocations and planar faults with increasing Zr composition, leading to tensile stresses and stress gradients.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Sukalyan Shyam, Debajyoti Das
Summary: P-doped nc-SiOxCy:H films were grown at moderate conditions, showing the systematic formation of Si-C and Si-O-C bonds with the increase in CH4 flow rate. XPS studies confirmed the presence of Si-O-C bonds and P atoms as dopants in the network, while the optical band gap was enhanced by the addition of stronger Si-C bonds and quantum confinement effect from reduced nanocrystal size. The optimal n-type nc-SiOxCy:H film exhibited promising properties for use in all-Si tandem solar cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
J. Potocnik, M. Popovic, M. Mitric, Z. Rakocevic
Summary: The deposition angle has a significant influence on the porosity, crystallinity, surface roughness, as well as the optical and electrical properties of nickel thin films. Variations in refractive index, extinction coefficient, and resistivity were observed with different deposition angles, which can be correlated with changes in microstructure and porosity of the films.
Article
Chemistry, Physical
Nanthakishore Makeswaran, Cristian Orozco, Anil K. Battu, Eva Deemer, C. V. Ramana
Summary: This study focused on the nanoscale structure, phase, and electronic properties of nanocrystalline Mo films with variable microstructure and grain size. The results showed that the deposition temperature and grain size significantly affected the hardness, elastic modulus, plasticity index, wear resistance index, optical properties, and electrical conductivity of the Mo films.
Article
Materials Science, Multidisciplinary
Renee J. Saenz-Hernandez, Guillermo M. Herrera-Perez, Jesus S. Uribe-Chavira, Maria C. Grijalva-Castillo, Jose Trinidad Elizalde-Galindo, Jose A. Matutes-Aquino
Summary: By adjusting the thickness of WO3 films, the concentration of oxygen vacancies can be modulated, which has a significant influence on the applications of these semiconductor materials. Additionally, the thickness of the film affects the structure, roughness, and surface area of the film.
Article
Materials Science, Multidisciplinary
Pengfei Guan, Ming Zheng
Summary: Tuning the photoluminescence properties of rare earth doped ferroelectric thin films is important for developing novel optical-electro devices. In this study, the effects of crystal orientation on the photoluminescence properties of (001), (011), and (111)-oriented Pr3+ doped Ba0.85Ca0.15Ti0.90Zr0.10O3 (BCTZ:Pr3+) thin films were investigated. The results show that the emission intensity is stronger in (001) and (111)-oriented films compared to (011)-oriented films, suggesting a dependence of photoluminescence on crystal orientation.
Article
Engineering, Electrical & Electronic
E. F. M. El-Zaidia
Summary: In this study, MnClPc thin films were deposited on glass substrates using thermal evaporation technique and their structural and optical properties were analyzed. The films were found to have nanostructure and exhibited slight changes in optical properties with increasing thickness. An increase in film thickness was shown to significantly reduce laser output power through experiments.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Biochemistry & Molecular Biology
Xiangrui Meng, Shougang Wang, Yinsheng Yu, Pengzhen Gong
Summary: In this study, polyvinylidene fluoride trifluoro ethylene chloride and barium titanate composites were prepared, and their microstructure and mechanical properties were investigated through molecular dynamics simulations and experiments. It was found that increasing the ceramic content in the composites significantly reduced the yield stress, by 16.07%. The agglomeration and stress mechanism of the composites were proposed through comparison with experimental data.
JOURNAL OF MOLECULAR MODELING
(2023)
Article
Chemistry, Physical
Bryan Horcholle, Christophe Labbe, Xavier Portier, Philippe Marie, Cedric Frilay, Weiqiang Yuan, Wojciech Jadwisienczak, David Ingram, Clara Grygiel, Julien Cardin
Summary: Undoped and doped Nb2O5 thin films were successfully deposited on silicon wafer using sputtering technique and annealed to investigate their chemical, structural, optical, and photoluminescent properties. The study revealed the stoichiometry, phase transformations, refractive index, and electronic properties evolution of the films with annealing temperature and Tb3+ ion content. Raman spectra analysis confirmed the structural evolution, while the correlation between photoluminescence and electronic properties was highlighted.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Qingguo Feng
Summary: The electronic and optical properties of MgGeN2 Pnma phase thin films, which have a strong dependence on film thickness, were investigated. For odd number multilayers, the band gap reduced from 2.574 eV for trilayers to 2.350 eV for pentalayers, and further to 2.202 eV for heptalayers. For even number multilayers, the band gap decreased from 2.866 eV for bilayers to 2.692 eV for quadlayers, and further to 2.670 eV for hexalayers. The variation in properties is attributed to the number of surface and sub-surface layers, as well as their bonding relations. Additionally, different multilayers exhibit either direct or indirect band gaps. Thus, controlling the film thickness can be utilized for device design to expand the potential applications of II-IV-N2 ternary nitrides.
Article
Materials Science, Multidisciplinary
Binbin Xin, Arnaud Le Febvrier, Lei Wang, Niclas Solin, Biplab Paul, Per Eklund
Summary: Highly pure CaxCoO2 thin films were successfully obtained through annealing multilayers, with excellent optical properties and the possibility to increase electrical conductivity by introducing a secondary phase. This study provides a new method for the preparation of solid-state oxide thin films.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Zaoli Zhang, Arsham Ghasemi, Nikola Koutna, Zhen Xu, Thomas Gruenstaeudl, Kexing Song, David Holec, Yunbin He, Paul H. Mayrhofer, Matthias Bartosik
Summary: This study investigates the effects of point defects on the structure and properties of magnetron sputtered TiN nanocrystalline films. It is found that point defects significantly alter the nanocrystal microstructure and local electronic structure, leading to improved electrical conductivity and fracture toughness of TiN. Experimental data align well with first-principle calculations, highlighting a direct correlation between point defect structure and mechanical properties of TiN films.
MATERIALS & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Shangtao Zhang, Jian Wang, Rong Wu, Boting Pan, Lang Liu, Chunhai Liu
Summary: Transition metal nitrides, specifically zirconium nitride (ZrN) thin films, were fabricated using reactive direct-current (DC) magnetron sputtering and their morphology and electrochemical capacitive performance as electrode materials for supercapacitors were investigated. The films exhibited a continuous and homogeneous structure with a fine columnar morphology. The T3 film electrode showed the highest areal specific capacitance of 1.19 mF cm(-2) at a current density of 0.05 mA cm(-2) due to its higher porosity, better wettability, and lower charge transfer resistance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
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.