检索结果-内蒙古大学图书馆

作者： Liu, Tao Li, Yang Yang, Jia-Yi Wang, Ting-Ting Wang, Xiao Yang, Lin-An Dickey, Michael Ao, Jin-Ping Hao, Yue Xidian University Key Laboratory for Wide Band-Gap Semiconductor Materials and Devices School of Microelectronics Xi'an710071 China Jiangnan University Engineering Research Center of Internet of Things Technology Applications Ministry of Education Department of Electronic Engineering Wuxi214122 China Xi'an University of Science and Technology College of Computer Science and Technology Xi'an710064 China North Carolina State University Department of Chemical and Biomolecular Engineering RaleighNC27695 United States

In this article, a gallium nitride (GaN) Schottky barrier diode (SBD)-based microwave rectifier with high efficiency, current, and power bandwidth is proposed for wireless strain sensing and monitoring. Solutions including semiconductor devices, rectification circuits, and sensing mechanisms are discussed. A microwave rectifier working at 928 MHz is designed for wireless rectification strain sensing, with a measured power efficiency over 85% and a load resistance lower to 40 Omega based on a customized quasi-vertical GaN SBD. The finger layout and TiN anode make the SBD series resistance reduced to 1.81~Omega , but saturation current enhanced to 11.8 nA, which significantly reduces rectification loss when the load resistance is small. Finally, a rectification strain sensor (RSS) is proposed by dielectric coupling the rectifier and a piezo-permittivity liquid metal elastomer foam (LMEF), with a measured relative output power variation and wireless working distance over 437%/mm and 3 m, respectively. © 1963-2012 IEEE.

关键词： III-V semiconductors

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Ultra-High-Energy Heavy Ion Induced Single Event Effect of TSV-Based 3D Integrated SOI SRAM Circuits

Ultra-High-Energy Heavy Ion Induced Single Event Effect of T...

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European Conference on Radiation and its Effects on Components and Systems (RADECS)

作者： Junjun Zhang Fanyu Liu Bo Li Jiantou Gao Peixiong Zhao Jie Liu Jiajun Luo Chinese Academy of Sciences Institute of Microelectronics University of Chinese Academy of Sciences and Key Laboratory of Science and Technology on Silicon Devices Beijing China Institute of Microelectronics and Key Laboratory of Science and Technology on Silicon Devices Chinese Academy of Sciences Beijing China Institute of Modern Physics Chinese Academy of Sciences Gansu China

The single event upset of TSV-based four-tier 3D SRAM circuits is investigated through experimental method with ultra-high-energy heavy ions and the upset cross-section exhibits strong relationship on the tier positio...

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Recent progress and future perspectives of ionic liquid-based carbon dioxide capture and conversion

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Green Energy and Environment 2025年

作者： Zafar, Anum Matuszek, Karolina MacFarlane, Douglas R. Zhang, Xinyi Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices School of Microelectronics Hubei University Wuhan430062 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528216 China School of Chemistry Monash University Victoria3800 Australia

Carbon dioxide accounts for about 80 percent of greenhouse emissions and the increasing CO2 emission has been identified as a critical environmental issue. On the other hand, CO2 is a potentially renewable resource of a single carbon molecule, and new technologies to utilize CO2 in producing net-zero fuels and chemicals are of global interest. Great efforts have been made in the development of new materials and processes for CO2 capture and utilization (CCU). Among them, ionic liquids (ILs) have attracted much attention due to their unique characteristics such as high CO2 solubility, high ionic conductivity, negligible volatility, non-flammability, wide electrochemical window, and high thermal stability, as well as good solvation ability. This review summarizes the most recent efforts devoted to IL-based absorption, catalysts, and CO2 capture and utilization processes. We discuss the factors that affect the interaction between ILs and CO2, impacting on the viscosity and CO2 solubility and preview the coupling of CO2 capture with electrochemical conversion of CO2. Finally, we provide an overview on the advantages and disadvantages of the IL-based process for practical applications. © 2024 Institute of Process Engineering, Chinese Academy of Sciences

关键词： Catalysis

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SnO_(2)修饰MoS_(2)薄膜的n-p可调室温氢气响应及其原位SKPM研究

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Science China Materials 2023年第11期66卷 4427-4436页

作者：谈论刘贤朕杨飘云李炜杨伟佳李昂顾豪爽王钊 Hubei Engineering Research Center for Safety Detection and Control of Hydrogen Energy Hubei Key Laboratory of Micro-&Nano-electronic Materials and DevicesSchool of MicroelectronicsHubei UniversityWuhan 430062China College of Physics and Electromechanical Engineering Hubei University of EducationWuhan 430205China Institute of Microstructure and Properties of Advanced Materials Beijing University of TechnologyBeijing 100124China

研发高性能氢气传感器对氢能及相关产业发展具有重要意义.2D-MoS_(2)纳米材料在构建快速可靠的室温氢气传感器方面优势显著,但灵敏度和选择性较差.本文报导了具有n-p可调型氢敏响应行为的SnO_(2)修饰MoS_(2)薄膜,其原位SKPM研究表明SnO_... 详细信息

研发高性能氢气传感器对氢能及相关产业发展具有重要意义.2D-MoS_(2)纳米材料在构建快速可靠的室温氢气传感器方面优势显著,但灵敏度和选择性较差.本文报导了具有n-p可调型氢敏响应行为的SnO_(2)修饰MoS_(2)薄膜,其原位SKPM研究表明SnO_(2)(0.38 eV)和MoS_(2)(0.26 eV)在氢敏响应中会出现不同的表面电势变化,使其界面势垒随SnO_(2)覆盖率的增加而改变,从而使界面效应对体系n型氢敏响应的积极贡献转变为负面补偿.当SnO_(2)覆盖率为6.4%时,传感器具有增敏、提速且选择性好的n型氢敏响应,当其提高至95.6%时呈现p型响应.这种随结构n-p可调的氢敏响应既能用于传感层的敏感性能调节,还可为MoS_(2)基二维材料的气敏响应类型调控提供简单易行、成本低廉的方法.

关键词： hydrogen sensor 2D materials scanning Kelvin probe microscopy molybdenum disulfide tin dioxide

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Which Activity Might Cause the Most Wear of Total Knee Prostheses During Daily Living? A Finite Element Analysis

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Journal of Arthroplasty 2025年

作者： Mao, Zuming Tang, Jiawei Li, Rongkang Ma, Xu Zhu, Xiaoyu Zhao, Feng Key Laboratory of Biomechanics and Mechanobiology (Beihang University) Ministry of Education Beijing China Key Laboratory of Innovation and Transformation of Advanced Medical Devices Ministry of Industry and Information Technology Beijing China National Medical Innovation Platform for Industry-Education Integration in Advanced Medical Devices (Interdiscipline of Medicine and Engineering) Beijing China School of Biological Science and Medical Engineering Beihang University Beijing China

Background: The complications induced by wear debris were the main reasons for the long-term failure of total knee arthroplasty (TKA). Wear prediction based on level walking in the International Organization for Standardization (ISO) 14243 standard could not accurately reflect the activities of TKA patients, especially other activities of daily living (ADLs). This study aimed to investigate the biomechanical effects and evaluate the wear of the prostheses during different ADLs. Methods: There were seven finite element models used to predict the wear of prostheses within 5 million cycles during six ADLs presented in the ISO 14243 standard and American Society for Testing and Materials (ASTM) F3141 standard, including level walking in the ISO standard, straight walking (SWA), pivot turn (PTA), cross-over turn (CTA), stair ascent, stair descent, and sit-stand sit in the ASTM standard. Results: Although there was not much difference in the results between ISO walking and ASTM walking, the stress and wear depth on the insert of the other ADLs increased significantly, and the wear distribution was more dispersed. The maximum wear depth of PTA and CTA was higher than that of SWA, while the mass wear rates of stair descent, stair ascent, and sit-stand sit were much higher than those of PTA, CTA, and SWA. Conclusions: The wear of prostheses during various ADLs was distinctly different, suggesting that more attention should be paid to the influence of ADLs on the wear evaluation and prosthesis design. Total knee arthroplasty patients need to choose daily activities cautiously to prolong the life of the prosthesis. © 2025 Elsevier Inc.

关键词： activities of daily living ASTM F3141 finite element analysis knee prosthesis wear

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减缓自由阴离子迁移以缓解浓差极化用于高性能的聚合物锂金属电池

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Science Bulletin 2024年第11期69卷 1706-1715页

作者：崔满营秦棪阳李智超赵洪洋刘理民江智元曹振江赵坚蕴毛博阳于伟苏亚琼 RVasant Kumar 丁书江屈治国郗凯 School of Chemistry Engineering Research Center of Energy Storage Materials and DevicesMinistry of EducationNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyState Key Laboratory for Electrical Insulation and Power EquipmentXi’an Jiaotong UniversityXi’an 710049China MOE Key Laboratory of Thermo-Fluid Science and Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China Department of Engineering University of CambridgeCambridge CB30FAUK Department of Materials Science and Metallurgy University of CambridgeCambridge CB30FSUK

Traditional dual-ion lithium salts have been widely used in solid polymer lithium-metal batteries(LMBs).Nevertheless, concentration polarization caused by uncontrolled migration of free anions has severely caused the growth of lithium dendrites. Although single-ion conductor polymers(SICP) have been developed to reduce concentration polarization, the poor ionic conductivity caused by low carrier concentration limits their application. Herein, a dual-salt quasi-solid polymer electrolyte(QSPE), containing the SICP network as a salt and traditional dual-ion lithium salt, is designed for retarding the movement of free anions and simultaneously providing sufficient effective carriers to alleviate concentration polarization. The dual salt network of this designed QSPE is prepared through in-situ crosslinking copolymerization of SICP monomer, regular ionic conductor, crosslinker with the presence of the dual-ion lithium salt,delivering a high lithium-ion transference number(0.75) and satisfactory ionic conductivity(1.16 × 10^(-3) S cm^(-1) at 30 ℃). Comprehensive characterizations combined with theoretical calculation demonstrate that polyanions from SICP exerts a potential repulsive effect on the transport of free anions to reduce concentration polarization inhibiting lithium dendrites. As a consequence, the Li||LiFePO_4 cell achieves a long-cycle stability for 2000 cycles and a 90% capacity retention at 30 ℃. This work provides a new perspective for reducing concentration polarization and simultaneously enabling enough lithiumions migration for high-performance polymer LMBs.

关键词： Polymer electrolyte Concentration polarization Energy storage materials Ion transport regulation Lithium-metal battery

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Machine-Learning Modeling of Elemental Ferroelectric Bismuth Monolayer

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Physical Review Letters 2024年第26期133卷 266103-266103页

作者： Yanxing Zhang Xinjian Ouyang Dangqi Fang Shaojie Hu Laijun Liu Dawei Wang School of Physics Henan Normal University Xinxiang 453007 China School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University Xi’an 710049 China Key Lab of Micro-Nano Electronics and System Integration of Xi’an City Xi’an Jiaotong University Xi’an 710049 China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi’an Jiaotong University Xi’an 710049 China Department of Physics Kyushu University 744 Motooka Fukuoka 812-8581 Japan Key Laboratory of Nonferrous Materials and New Processing Technology Ministry of Education College of Materials Science and Engineering Guilin University of Technology Guilin 541004 China

The bismuth monolayer has recently been experimentally identified as a novel platform for the investigation of two-dimensional single-element ferroelectric system. Here, we model the potential energy surface of a bismuth monolayer by employing a message-passing neural network and achieve an error smaller than 1.2 meV per atom. Empowered by the high accuracy and fast prediction of the machine learning model, we have embarked on in-depth and large-scale atomistic simulations. These explorations are tailored to understand the temperature-dependent phase transitions, with an emphasis on the difference between free-standing monolayers and those constrained by a substrate. Furthermore, with the large system used in the simulations, we are also able to observe ferroelectric domains within these systems and shed light on their intrinsic lattice thermal conductivity.

关键词： Ferroelectricity

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非平衡压缩实现高灵敏度、线性响应协同的离电压力传感器

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Science Bulletin 2024年第14期69卷 2221-2230页

作者：杨静李志斌伍莹沈勇张明陈彬袁国江肖松华冯建松张旭唐毓蔚丁孙安陈晓龙王太宏 Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518055China School of Microelectronics Southern University of Science and TechnologyShenzhen 518055China Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of EducationChangsha Semiconductor Technology and Application Innovation Research InstituteCollege of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China School of Environmental and Chemical Engineering Yanshan UniversityQinhuangdao 066004China School of Integrated Circuits Nanjing UniversitySuzhou 215163China

Flexible pressure sensors with high sensitivity and linearity are highly desirable for robot sensing and human physiological signal ***,the current strategies for stabilizing axial microstructures(e.g.,micro-pyramids)are mainly susceptible to structural stiffening during compression,thereby limiting the realization of high sensitivity and ***,we report a bending-induced nonequilibrium compression process that effectively enhances the compressibility of microstructures,thereby crucially improving the efficiency of interfacial area growth of electric double layer(EDL).Based on this principle,we fabricate an iontronic flexible pressure sensor with vertical graphene(VG)array ***-high sensitivity(185.09 kPa^(-1))and linearity(R^(2)=0.9999)are realized over a wide pressure range(0.49 Pa–66.67 k Pa).It also exhibits remarkable mechanical stability during compression and *** sensor is successfully employed in a robotic gripping task to recognize the targets of different materials and shapes based on a multilayer perception(MLP)neural *** opens the door to realizing haptic sensing capabilities for robotic hands and prosthetic limbs.

关键词： Artificial mechanoreceptor Pressure sensor Vertical grapheme Ionic nanofiber Object recognition E-skin

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Periodic Defect Boundary-Mediated Activity of Electrocatalytic Oxygen Reduction Reactions of Fe-N-C Catalysts

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Renewables 2024年第3期2卷 213-221页

作者： Ziwei Wang Huiting Niu Tiantian Wu Shujiang Ding Bao Yu Xia Yaqiong Su School of Chemistry Engineering Research Center of Energy Storage Materials and Devices of Ministry of EducationNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyXi’an Jiaotong UniversityXi’an 710049 School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education)Hubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsWuhan National Laboratory for OptoelectronicsHuazhong University of Science and Technology(HUST)Wuhan 430074

The introduction of defects can adjust the activity of graphene-based single-atom catalysts for oxygen reduction reactions(ORR).Herein,we for the first time investigate the ORR catalytic activity of FeN_(4)sites embedded on graphene with four types of line-defective boundary via density functional theory *** results show that periodic line defects consisting of pentagon-pentagon-octagon(C_(585))or quad-octagon chains(C_(484))can significantly enhance ORR activity,owing to the optimized electronic structures of FeN_(4)*** spin magnetic moment and the valence state of the Fe atom are both well correlated with the ORR *** investigations further corroborate that FeN_(4)with a high degree of defects exhibits better ORR activity and stability compared to FeN_(4)sites of pristine graphene and commercial Pt/*** work unravels the influence of the periodic defect boundary on the ORR performance of Fe-N-C catalysts and paves the way towards the rational design of highly effective single-atom electrocatalysts.

关键词： density functional theory Fe-N-C catalysts oxygen reduction reaction periodic defect electrocatalyst

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Electrically variable interfaces in polymer nanocomposite dielectrics

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Physical Review B 2024年第18期109卷 184205-184205页

作者： Wen-Zhi Luo Zhong-Hui Shen Yang Shen Long-Qing Chen Ce-Wen Nan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Wuhan 430070 China School of Materials and Microelectronics Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China Department of Materials Science and Engineering The Pennsylvania State University University Park Pennsylvania 16802 United States

Polymer nanocomposites generally exhibit unexpected dielectric/electrical performance far beyond the sum of every component, which is mainly due to the interface effect induced by the differences in structures and properties between the nanofillers and the polymer matrix. However, understanding the capricious interface effect in different polymer nanocomposites remains a major challenge. Here, we perform density functional theory calculations to investigate the atomic/molecular configurations and local charge behaviors of heterogeneous interfaces between the fillers of perovskites, oxides, two-dimensional materials, and polar/nonpolar polymers. Our findings demonstrate that atomic reconfiguration takes place during the formation of the inorganic/organic interface in order to minimize the overall energy of the system. Significant charge accumulation occurs at heterogeneous interfaces due to electron redistribution, especially for the examples of HfO2 and negatively charged Ca2Nb3O10. When applying an electric field, local polarization, especially around the interface, will be distorted and enhanced as a result of interfacial interaction. Even for the nonpolar polymer with linear dielectric oxides such as TiO2, induced dipole moments also appear near the interface, leading to the improvement of overall polarizability. The outcomes of our study verify that the variable electrical behaviors at the interfaces are highly dependent on the feature of every component constituting the inorganic/organic interface, which offers valuable insights for optimizing the experimental design of heterogeneous interfaces in polymer nanocomposites.

关键词： Electric polarization Solid-solid interfaces Density functional calculations

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