Article
Materials Science, Ceramics
T. V. Perevalov, V. A. Volodin, G. N. Kamaev, A. A. Gismatulin, S. G. Cherkova, I. P. Prosvirin, K. N. Astankova, V. A. Gritsenko
Summary: The electronic structure and optical properties of SiOxNy:H films enriched with silicon obtained by plasma-enhanced chemical deposition are studied. It is found that the film composition can be effectively varied by changing the gas flow ratio and plasma generator power. Additionally, the p+-Si/SiOxNy:H/Ni structures exhibit properties of memristor bipolar type.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Weichen Xiao, Mark A. Buckingham, Yi Li, Kerry Hazeldine, Bing Han, Sarah H. Cartmell, Alexander S. Eggeman, Alex S. Walton, David J. Lewis
Summary: This study reports the synthesis of a high entropy (CuZnCoInGa)S metal sulfide thin film using molecular precursors and deposited by AACVD for the first time.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Pierre Tomasini
Summary: The silicon chemical vapor deposition process via silane is determined using classical thermodynamics, showing that a linear function of temperature controls silicon growth rates and neatly maps the response of growth rate activation energy, providing clarity to the parameter space. The study demonstrates the portability of the linear function of temperature across reactors and extracts reactor scaling factors, reducing the complex silicon deposition process to its essentials through thermodynamics.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Antoine Raison, Nathalie Prud'homme, Wu Wang, Diana Dragoe, Nita Dragoe
Summary: We have successfully synthesized a multi-cationic oxide (MgCoNiCuZn)O through pulsed liquid injection chemical vapor deposition. The synthesis was carried out at temperatures ranging from 400 degrees C to 550 degrees C, using five metal-organic precursors solubilized in dimethoxyethane (DME). The microstructure of the material was analyzed using HRTEM with HAADF, SEM, EDS, XPS, and XRD techniques before and after annealing.
Article
Chemistry, Physical
W. Ke, K. Yang, X. D. Zhu
Summary: Amorphous Si-B-N alloy films prepared on SS304 stainless steel substrates by RF-PCVD technique exhibited improved hardness and wear resistance, with a surface morphology of hilly clusters composed of small particles.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Konstantina Christina Topka, Hugues Vergnes, Tryfon Tsiros, Paris Papavasileiou, Laura Decosterd, Babacar Diallo, Francois Senocq, Diane Samelor, Nadia Pellerin, Constantin Vahlas, Brigitte Caussat, Marie-Joelle Menu
Summary: An apparent kinetic model is developed to predict the deposition rates and composition of silicon oxynitride films in a novel CVD process. The model combines gas and solid-phase analysis and successfully predicts the deposition rates and composition of SiOxNy films containing non-negligible carbon. This model represents the main chemical mechanisms involved in the CVD of a four-component material.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Crystallography
Feifei Lan, Rui Zhou, Ziyue Qian, Yuansha Chen, Liming Xie
Summary: In this study, Fe3O4 thin films with room-temperature ferrimagnetism were successfully grown using a simple chemical vapor deposition method. The films maintained good magnetic properties even at thicknesses as low as 4 nm. Various analysis techniques were used to study the structure and quality of the films, and it was found that the saturation magnetization was higher than that of bulk materials and the Verwey transition was observed. This work provides a new method for synthesizing ultrathin films with ferrimagnetic properties for applications in electronics, spintronics, and memory devices.
Article
Materials Science, Multidisciplinary
Zhi Jin, Yu-An Shen, Fupeng Huo, Y. C. Chan, Hiroshi Nishikawa
Summary: The study investigated the electromigration effect of pure silver thin films, observed a new phenomenon, and proposed a method to improve reliability.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Lianping Chen, Yuanhong Gao, Yibin Chen, Jun Cao
Summary: The influence of europium on the structure and luminescent properties of CaWO4 thin films was investigated, and the sputtering yields of different compounds were studied. The results showed that the compositions of the deposits matched those of the targets, and the lattice constants increased under certain conditions. The preferential growth along a specific crystal plane also increased due to the substitution of Ca2+ with Eu2+. Doping of Eu led to improved photoluminescence performance of the films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
David Redka, Milan Buttberg, Gerhard Franz
Summary: This article discusses the issue of longitudinal decreasing film thickness and its solution, providing a theoretical model and experimental verification. By predicting the sticking coefficient curve, the actual homogeneous film thickness can be obtained and shown to be in good agreement with the prediction. Additionally, it is found that there is a maximum achievable homogeneous film thickness in the tube, which can be understood as the coating efficiency.
Review
Physics, Applied
Aleksander M. Wrobel, Pawel Uznanski
Summary: Our study reviews the production of amorphous hydrogenated silicon carbonitride thin films through remote plasma chemical vapor deposition (RP-CVD) using 1,1,3,3-tetramethyldisilazane as a single-source compound with H2 + N2 upstream-gas mixture. The effects of nitrogen content in the mixture on the RP-CVD process, chemical structure, surface morphology, and properties of the deposited films are described. The a-SiCN films show great potential as coatings for improving the surface mechanics of engineering materials in advanced technologies.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Engineering, Electrical & Electronic
N. H. Sulimai, M. J. Salifairus, Z. Khusaimi, M. F. Malek, S. Abdullah, Haseeb Khan, Salman Al Rokayan, M. Rusop
Summary: This study successfully synthesized nanostructured calcite thin film using additive-free thermal chemical vapor deposition method, and discussed the influence of deposition temperature on its chemical reaction and composition. The nanostructured calcite thin film deposited at 400 degrees Celsius exhibited a single crystalline phase with a calculated crystallite size of 27.8 nanometers, providing a feasible basis for future applications in fields such as biosensors and photocatalysts.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Coatings & Films
Jorge Sanchez Espinoza, Fatma Trabelsi, Christophe Escape, Ludovic Charpentier, Marc Fivel, Elisabeth Blanquet, Frederic Mercier
Summary: Ti3SiC2-SiC multilayer film coatings were synthesized using the high temperature reactive chemical vapor deposition technique. The coatings exhibited good mechanical integrity and high temperature stability.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Environmental Sciences
Amina Laouid, Amine Alaoui Belghiti, Krzysztof Wisniewski, Abdelowahed Hajjaji, Bouchta Sahraoui, Anna Zawadzka
Summary: In this study, the photoluminescence properties of Znq(2) thin films co-doped with different concentrations of DCM were experimentally investigated. The results confirm that the doping affects the intensity of DCM's photoluminescence and demonstrates a complete energy transfer from Znq(2) to DCM. Additionally, the real-time measurement of the sample's lifetime shows differences among the samples. Thus, doping influences the optical properties of Znq(2) and has potential for optoelectronic applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Han-Yin Liu, Wei-Ting Chen, Pei-Huang Hsu
Summary: A 5-nm-thick Mg0.05Sn0.95Ox thin film deposited using mist chemical vapor deposition serves as a channel layer for TFT. Compared to SnO2, Mg0.05Sn0.95Ox enhances crystallinity, reduces oxygen deficiencies, and widens the energy bandgap. The Mg0.05Sn0.95Ox-based TFT exhibits higher field-effect mobility, steeper subthreshold slope, and more stable electrical performance, making it a promising material for high electron mobility TFT applications.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Materials Science, Multidisciplinary
Huiling Zhang, Ruping Liu, Huiqing Zhao, Zhicheng Sun, Zilong Liu, Liang He, Ye Li
Summary: With the advancement of IoT, AI, and wearable devices, a vast amount of data is being generated and requires processing. Memristors have garnered considerable attention due to their low energy consumption, tolerance, simple structure, and miniaturization. The development of flexible memristors opens up new possibilities for neural network computing and bionic sensing systems.
Article
Instruments & Instrumentation
Shengyu Fu, Xianghui Yin, Jia Fu, Yingying Li, Fudi Wang, Hongming Zhang, Cheonho Bae, Bo Lyu, Qianhong Huang, Yongcai Shen, Yichao Li, Liang He, Yifei Jin, Xueyu Gong
Summary: Analyzing the radiation spectra of impurity ions is a common method for diagnosing plasma ion temperature and rotation on tokamaks. This study presents a precise wavelength calibration method using a Fabry-Perot etalon and characteristic neon lines, achieving high accuracy in plasma parameter measurements.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Review
Chemistry, Physical
Mengzhu Wang, Yingying Xiao, Ye Li, Lu Han, Zhicheng Sun, Liang He, Ruping Liu, Kuan Hu
Summary: With the rapid development of optoelectronics and related industries, the development of flexible photodetectors (PDs) has become significant. In this review, the recent research progress on graphene-based flexible PDs is outlined, including the investigation of graphene conductive films and the analysis of optical and mechanical performance of PDs based on single-component graphene and mixed-structure graphene.
Article
Chemistry, Physical
Chenxi Yue, Dan He, Xianguang Zeng, Zeyu Ma, Liang He, Zeda Meng, Jian Chen, Wei Zhao
Summary: To develop a highly efficient anode for lithium ion batteries, researchers have prepared a hybrid membrane called TNT@CNFs, which combines ultralong oxygen-deficient titanium dioxide nanotubes (TNTs) with carbon nanofibers (CNFs). This membrane offers several advantages including fast ion and electron transport, protection from direct contact with electrolytes, improved electrical conductivity, and enhanced ion transport. The experimental results show that the anode with a low TNT content exhibits a high reversible specific capacity after multiple cycles, while the anode with a high TNT content demonstrates excellent rate performance and long cyclic lifespan. The findings of this work provide insights for the development of electrode materials for ultrafast rechargeable LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Fluids & Plasmas
Dian Lu, Fudi Wang, Luis F. Delgado-Aparicio, Yang Yang, Kenneth Hill, Cheonho Bae, Manfred Bitter, Jia Fu, Hongming Zhang, Yongcai Shen, Yifei Jin, Haijing Liu, Liang He, Shengyu Fu, Qing Zang, Bo Lyu
Summary: The Xe44+ 2.7203 angstrom line, considered as a diagnostic line for the x-ray imaging crystal spectrometer on ITER, was observed on the EAST tokamak along with its satellite lines. These observations were conducted under high electron temperature conditions. Most of the observed xenon lines were identified by comparing the experimental and simulation results. The first ion temperature measurements based on the xenon spectra were also reported in this article. These xenon spectra observations contribute to the justification for using xenon as a diagnostic impurity in future reactor-scale high-temperature plasmas.
Article
Chemistry, Analytical
Yuanlin Xia, Yujie Wang, Tianxiang Liang, Zhen Peng, Liang He, Zhuqing Wang
Summary: In this paper, a portable photoacoustic microscopy (PAM) system based on a large stroke electrothermal micromirror is proposed to achieve high resolution and fast imaging. The crucial micromirror in the system allows for precise and efficient 2-axis control. The system exhibits advantages in image resolution and control accuracy, indicating significant potential in the field of facial angiography.
Article
Chemistry, Analytical
Gongchuan You, Zhe Zhu, Yixue Duan, Linfeng Lv, Xiaoqiao Liao, Xin He, Kai Yang, Ruiqi Song, Yi Yang, Liang He
Summary: In this study, a new strategy was proposed to construct high-rate Ni-Zn microbatteries based on a 3D hierarchical porous nickel (Ni) microcathode. The fabricated microcathode exhibited excellent rate performance and durability. This strategy provides a facile route for the construction of microcathodes and enriches high-performance output units for integrated microelectronics.
Article
Materials Science, Multidisciplinary
Yixue Duan, Gongchuan You, Zhe Zhu, Linfeng Lv, Xiaoqiao Liao, Xin He, Kai Yang, Ruiqi Song, Peng Tian, Liang He
Summary: In this study, a reconstructed NiCo alloy microcathode is proposed for a Ni-Zn microbattery, which exhibits excellent performance in high-rate charging and large capacity. The compactly adhered reconstructed layer on the metal substrate enhances the conductivity and reaction depth of the alloy, leading to superior performance in reaction rate and capacity. The microcathode achieves a large capacity of 1.51 mAh cm(-2) and a capacity retention of 82.9% at a current density of 100 mA cm(-2). Furthermore, the excellent performance can be extended to the full Ni-Zn microbattery, maintaining stable fast-charging capability for 7000 cycles. This reconstructed NiCo alloy microcathode provides a new direction for the construction of high-performance output units.
Review
Materials Science, Multidisciplinary
Yanan Mei, Yuling He, Haijiang Zhu, Zeyu Ma, Yi Pu, Zhilin Chen, Peiwen Li, Liang He, Wenwu Wang, Hui Tang
Summary: The development of silicon-based anodes, with higher energy density, has attracted great attention as the capacity of lithium-ion batteries (LIBs) with commercial graphite anodes is gradually approaching the theoretical capacity of carbon. However, the large volume variation during its lithiation/de-lithiation tends to lead to capacity decay and poor cycling performance. This review focuses on three strategies for structural design and optimization of Si/C anodes and provides deeper insights into the problems that remain to be addressed.
Article
Engineering, Environmental
Mengdi Peng, Zhe Zhu, Kai Yang, Linfeng Lv, Yixue Duan, Xiaoqiao Liao, Xin He, Gongchuan You, Ruiqi Song, Liang He
Summary: In situ construction of an anti-corrosion structure via intermediate carbon cloth enables stable zinc deposition and extends battery life. The intermediate carbon cloth regulates the growth of the zinc hydroxide sulfate (ZHS) byproduct, activating its stabilizing effect and forming an anti-corrosion structure for further zinc deposition. Additionally, the carbon cloth effectively adsorbs zinc atoms, facilitating uniform nucleation and growth. Experimental results demonstrate over 3200 hours of stable zinc plating/stripping at a practical current density, with stable extension of reaction current and capacity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Optics
Jian-Hua Zeng, Su Yi, Liang He
Summary: We investigate the ground-state properties of an ultracold-atom system consisting of many-body polarons in optical lattices. The nearest-neighbor attractive interaction between polarons can lead to rich physics, including a self-bound superfluid phase in a shallow optical lattice and a devil's-staircase structure in the Mott-insulator regime. These phenomena can be readily observed in current experimental setups.
Review
Chemistry, Multidisciplinary
Xiaomeng Yang, Ruiqi Song, Liang He, Leixin Wu, Xin He, Xiaoyu Liu, Hui Tang, Xiaolong Lu, Zeyu Ma, Peng Tian
Summary: Ultrafast laser machining has advantages in creating 3D micro/nano structures. This review provides a detailed introduction to the optimization mechanism of ultrafast laser machining and discusses specific applications in the optical, electrochemical, and biomedical fields.
Article
Chemistry, Physical
Huifang Ouyang, Xufeng Hong, Zhiyuan Zhou, Peng Xu, Hui Tang, Zeyu Ma, Zhuqing Wang, Xiaoqiao Liao, Liang He
Summary: This study proposes a strategy for preparing a layered MXene-graphene oxide (GO) membrane through vacuum filtration, which exhibits excellent electrical conductivity and chemical stability. The membrane shows a voltage-gated ion transport behavior, with the transition between closed and open states of the ion channel being adjustable by varying the transmembrane potential. The study also highlights the importance of the modulation ratio of MXene : GO, with a ratio of 7 : 3 achieving the optimal ion permeation rate.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Zhiyuan Zhou, Xufeng Hong, Huifang Ouyang, Peng Xu, Binbin Shuai, Xiuxiu Wu, Nuo Xu, Xinghang Chen, Liang He
Summary: This article discusses the enhancement of ion transport between MXene layers. It explores the significant effect of pre-intercalation of Mg2+ on the ion transport rate of Ti3C2Tx membranes and proposes that it is due to the increase in layer spacing and the enhancement of the work function of 2D nanochannels.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Xinglong Zhang, Shiying Hua, Long Lai, Zihao Wang, Tiaohao Liao, Liang He, Hui Tang, Xinming Wan
Summary: Electrocatalytic hydrogen evolution reactions (HERs) play a vital role in hydrogen production for clean energy applications, and molybdenum disulfide (MoS2) has attracted extensive attention as a potential catalyst due to its high activity. However, the HER performance of MoS2 needs improvement to compete with conventional Pt-based catalysts. In this review, three strategies (defect engineering, heterostructure formation, and heteroatom doping) for enhancing the HER performance of MoS2 are summarized, as well as the computational density functional theory (DFT) methods used to gain insights for material design. The challenges and prospects of MoS2-based catalysts for HER are also discussed.
