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2024 10th International Forum on Manufacturing technology and Engineering Materials, ICMTEM 2024

作者： Meng, Dehuan Liu, Shuai Wang, Weiping Wang, Zixin Hu, Xiaoyan Zhang, Xue Information Science Academy China Electronics Technology Group Corporation Beijing China National Key Laboratory of Integrated Circuits and Microsystems Beijing100042 China China

Ferroelectric field-effect transistors, characterized by low operating voltages and ultra-high speeds, are an important non-volatile memory device concept in modern microelectronics. Here, we show ferroelectric field-effect transistors using CuInP2S6 as the ferroelectric layer and MoS2 as the semiconductor channel layer. Thanks to optimized material thicknesses and clean, trap-free interfaces, we have achieved high-performance ferroelectric field-effect transistors with operating voltage as low as 1.5 V and an ultrafast speed of 20 ns. Our devices have a large on/off ratio of about 106 and a large memory window of about 1.7 V. Our results suggest that ferroelectric field-effect transistors are promising candidates for next-generation non-volatile memory applications. © Published under licence by IOP Publishing Ltd.

关键词： Van der Waals forces

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Growth,characterization,and transport calculation of Ge/SiGe heterojunction:strategy for the growth of undoped Ge quantum wells

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Journal of Semiconductors 2024年第12期45卷 62-70页

作者： Yiwen Zhang Jun Deng Zonghu Li Xinyou Liu Haiou Li Baochuan Wang Jun Luo Zhenzhen Kong Gang Cao Guoping Guo Chao Zhao Guilei Wang Laboratory of Fabrication Technologies for Integrated Circuits Chinese Academy of SciencesBeijing 100029China Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China School of Electronic Electrical and Communication Engineering University of Chinese Academy of SciencesBeijing 100049China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China

Ge/SiGe heterostructure quantum wells play a pivotal role in the pursuit of scalable silicon-based *** varying compressive strains within these quantum wells profoundly influence the physical characteristics of the qubits,yet this factor remains largely unexplored,driving our research *** this study,we utilized RP-CVD(Reduced Pressure Chemical Vapor Deposition)to grow Ge quantum wells with varied compressive strain,proposing growth schemes for lightly-strained(ε∥=-0.43%)QW(quantum well),standard-strained(ε∥=-0.61%)QW,and heavily-strained(ε∥=-1.19%)*** comprehensive material characterization,particularly employing the low-temperature magneto-transport measurements,we derived the percolation densities ranging from 4.7×10^(10) to 14.2×10^(10) cm^(-2) and mobilities from 3.382×10^(5) to 7.301×10^(5) cm^(2)∙V^(-1)∙s^(-1).Combined with the first-principles calculations,our analysis delves into the trends in effective mass and percolation density at low temperatures,shedding light on the impact of quantum effects on band structures and the interplay between structural components and wave *** research offers a comprehensive investigation into the intrinsic mechanisms governing complex multi-strained quantum wells,spanning growth,characterization,and computational perspectives,thereby establishing a strategy for the growth of high-quality strained quantum wells.

关键词： germanium quantum wells RP-CVD multi-strained quantum wells magneto-transport hetero-structure

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Properties and microstructure of oxide dispersion strengthened tungsten alloy prepared by liquid-phase method:a review

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Tungsten 2023年第4期5卷 481-502页

作者： Liu-Jie Xu Zhou Li Fang-Nao Xiao Yun-Chao Zhao Yu-Cheng Zhou Shi-Zhong Wei National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan University of Science and TechnologyLuoyang471003China Henan Key Laboratory of High-temperature Structural and Functional Materials Henan University of Science and TechnologyLuoyang471003China College of Material Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing201116China

The addition of the second phase into tungsten can significantly refine the grain size of tungsten alloys,and also play a role in dispersion strengthening,thus improving the properties of tungsten *** a preparation method of tungsten alloy powder,liquid-phase method avoids the disadvantage of mechanical alloying,and the obtained powder composition is accurate and controllable,with high purity and excellent *** present,the second phase particles used for dispersion strengthening tungsten alloys are mainly composed of *** particles can be synthesized and precipitated in nitrate solution through in situ chemical reaction,and are uniformly distributed in composite powder by mixing and ***,the oxide dispersion strengthened tungsten alloy(ODS-W)was obtained by reduction and ***-phase methods for preparing ODS-W alloys include azeotropic distillation,sol-gel methods,freeze-drying,hydrothermal synthesis,spray-drying,*** this paper,several liquid-phase methods for preparing tungsten alloy composite powder precursors are reviewed,and their latest research progresses are *** addition,the morphologies and properties of tungsten alloys prepared by different methods are compared,which provides guidance for preparing high-performance tungsten alloys.

关键词： Tungsten alloy ODS-W Liquid-phase method Microstructure Property

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Lightning Current Sweep Damage Test System Based on Energy Conversion 19th

Lightning Current Sweep Damage Test System Based on Energy C...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Duan, Zemin Tong, Chen Qu, Minglei Huang, Yeyuan School of Electrical Engineering and Automation Hefei University of Technology Hefei China National Key Laboratory of Electromagnetic Information Control and Effects Hefei China Key Laboratory of Strong Electromagnetic Environment Protection Technology Aviation Science and Technology Hefei China Key Laboratory of Aircraft Lightning Protection of Anhui Province Hefei China

ISBN: (纸本)9789819608966

To solve the problem of difficulty in simulating dynamic sweep damage of lightning current, this paper established a new lightning current sweep damage test system using motors and launch wheels. The speed of the test piece and the temperature during the damage process were measured by high-speed cameras and infrared thermometers. The speed of the test piece was 34 m/s and the temperature exceeded 600 °C. At the same time, a new lightning current component C generator topology and control method were proposed. The load current and inductor current were used to form a double closed-loop PI negative feedback controller to ensure that the load current meets the standard output requirements. The study in this paper has certain guiding significance for the direct effect sweep damage assessment of composite materials and the design of lightning current generators. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： High speed cameras

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Effect of CeO_(2) Nanoparticles on the Spread of Antibiotic Resistance in a Reclaimed Water-Soil-Radish System-Shenzhen City,Guangdong Province,China,April 2023

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China CDC weekly 2023年第46期5卷 1029-1037,I0005-I0007页

作者： Kaiqiang Yu Bixi Zhao Yuxi Yan Qing Yang Liming Chen Yu Xia School of Environmental Science and Engineering College of EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina School of Resource Environment and Life ScienceNingxia Normal UniversityGuyuan CityGansu ProvinceChina State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina

ABSTRACT Introduction:The use of reclaimed water(RW)for irrigation in agricultural practices raises concerns regarding the dissemination of antibiotic resistance genes(ARGs)from soils to edible *** effectiveness of na... 详细信息

关键词： Antibiotic Guangdong claimed

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A Fast X-ray Pulsar Time Delay Estimation Method Based on Bispectral Feature Points and Cross-Correlation 42

A Fast X-ray Pulsar Time Delay Estimation Method Based on Bi...

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42nd Chinese control Conference, CCC 2023

作者： Huang, Zhiwei Zong, Hua Xu, Qian Li, Xiaomin Beijing Aerospace Automatic Control Institute National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

ISBN: (纸本)9789887581543

In order to improve the accuracy and real-time performance of X-ray pulsar time delay estimation over short-time observation interval, a method based on bispectral feature points and cross-correlation is proposed in this paper. Firstly, calculate the self-bispectrum of the standard pulsar profile, extract the bispectral feature points by PSO algorithm, and store it in the spacecraft. Secondly, the pulsar photons are received in real-time and get the observation profile by epoch folding. Thirdly, calculate the cross-bispectrum at the bispectral feature points, construct the objective function of time delay estimation, and solve the extremum. Finally, the pulsar time delay estimation is obtained by screening the extreme points using cross-correlation. Simulation experiments based on Insight-HXMT observations of the Crab pulsar show that, the average running time of the proposed algorithm is 41.59ms on Matlab R2017b, and the average estimation error at observation interval below 2.5s is 0.1858ms, which is better than the traditional bispectrum method and the selected bispectrum method. © 2023 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Pulsars

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The twisted two-dimensional ferroelectrics

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Journal of Semiconductors 2023年第1期44卷 32-42页

作者： Xinhao Zhang Bo Peng National Engineering Research Center of Electromagnetic Radiation Control Materials School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 611731China

Since the beginning of research on two-dimensional(2D)materials,a few numbers of 2D ferroelectric materials have been predicted or experimentally confirmed,but 2D ferroelectrics as necessary functional materials are greatly important in developing future electronic *** breakthroughs in 2D ferroelectric materials are impressive,and the physical and structural properties of twisted 2D ferroelectrics,a new type of ferroelectric structure by rotating alternating monolayers to form an angle with each other,have attracted widespread interest and ***,we review the latest research on twisted 2D ferroelectrics,including Bernal-stacked bilayer graphene/BN,bilayer boron nitride,and transition metal ***,we prospect the development of twisted 2D ferroelectrics and discuss the challenges and future of 2D ferroelectric materials.

关键词： magic angle multiferroic ferromagnetic electric polarization long-range

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Acute Effects of Exposure to Fine Particulate Matter and Its Constituents on Sex Hormone Among Postmenopausal Women — Beijing, Tianjin, and Hebei PLADs, China, 2018–2019

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China CDC weekly 2024年第13期6卷 249-253,I0001-I0004页

作者： Yanlin Tian Jiaonan Wang Jianlong Fang Chen Chen Feng Zhao Yi Zhang Peng Du Yawei Li Wanying Shi Yuanyuan Liu Enmin Ding Song Tang Xu Yue Xiaoming Shi Chinese Research Academy of Environmental Sciences BeijingChina Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)Nanjing University of Information Science&TechnologyNanjing CityJiangsu ProvinceChina China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina Department of Epidemiology and Health Statistics School of Public HealthCapital Medical Universityand Beijing Municipal Key Laboratory of Clinical EpidemiologyBeijingChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina

What is already known on this topic?Exposure to fine particulate matter(PM_(2.5))was linked to endocrine hormone disruption in the reproductive ***,it was unclear which specific components of PM_(2.5) were primarily responsible for these *** is added by this report?The study presented the initial epidemiological evidence that brief exposure to PM_(2.5) can elevate estradiol levels in postmenopausal *** particle components had unique effects,with watersoluble ions and specific inorganic elements like Ag,As,Cd,Hg,Ni,Sb,Se,Sn,and Tl potentially playing significant roles in increasing estradiol *** are the implications for public health practice?The study established that the prevalence of air pollution,along with its specific components,has been recognized as a novel risk factor affecting the balance of sex hormones.

关键词： pollution Particulate primarily

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Single-atomic tungsten-doped Co_(3)O_(4) nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries

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Carbon Energy 2023年第8期5卷 31-41页

作者： Sangni Wang Riming Hu Ding Yuan Lei Zhang Chao Wu Tianyi Ma Wei Yan Rui Wang Liang Liu Xuchuan Jiang Hua Kun Liu Shi Xue Dou Yuhai Dou Jiantie Xu National Engineering Laboratory for VOCs Pollution Control Technology and Equipment Guangdong Provincial Key Laboratory of Atmospheric EnvironmentPollution Control School of Environment and EnergySouth China University of TechnologyGuangzhouChina Shandong Institute of Advanced Technology JinanChina School of Materials Science and Engineering Institute for Smart Materials&EngineeringUniversity of JinanJinanChina Institute of Energy Materials Science University of Shanghai for Science and TechnologyShanghaiChina Institute for Superconducting and Electronic Materials University of WollongongWollongongAustralia School of Science RMIT UniversityMelbourneVictoriaAustralia State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghaiChina

The practical application of lithium–sulfur batteries(LSBs)is severely hindered by the undesirable shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics of sulfur ***,a series of ultrathin singleatomic tungsten-doped Co_(3)O_(4)(Wx-Co_(3)O_(4))nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and *** from the enhanced catalytic activity and optimized electronic structure by W doping,the Wx-Co_(3)O_(4) not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species,leading to accelerated electrode *** a result,LSB cathodes with the use of 5.0 wt%W0.02-Co_(3)O_(4) as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g^(-1) at 0.2 and 5.0 C,respectively,and maintain a high reversible capacity of 644.6 mAh g^(-1) at 1.0 C(1.0 C=1675 mA g^(-1))after 500 *** a high sulfur loading of 5.5 mg cm^(-2) and electrolyte–electrode ratio of 8μL_(electrolyte) mg_(sulfur)^(-1),the 5.0 wt%W_(0.02)-Co_(3)O_(4)-based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm^(-2) at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.

关键词： catalytic additives lithium-sulfur batteries single-atomic dopant sluggish redox kinetics

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Mechanism study of the molluscicide candidate PBQ on Pomacea canaliculata using a viscosity-sensitive fluorescent probe

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Chinese Chemical Letters 2025年第1期36卷 447-452页

作者： Lanyun Zhang Weisi Wang Yu-Qiang Zhao Rui Huang Yuxun Lu Ying Chen Liping Duan Ying Zhou Yunnan Characteristic Plant Extraction Laboratory College of Chemical Science and TechnologyYunnan UniversityKunming 650091China National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchWHO Centre for Tropical DiseasesNational Key Laboratory of Inteligent Tracking and Forecasting for Infectious DiseasesKey Laboratory on Parasite and Vector Biology MinistryofHealthShanghai200025China

PBQ[1-(4-chlorophenyl)-3-(pyridin-3-yl)urea],an enormous potent molluscicide,showed excellent Pomacea canaliculata(***)control activity and low toxicity for other aquatic organisms,but its snail-killing mechanisms are still not fully *** employed an optical method to elucidate PBQ action via a novel fluorescent viscosity probe,*** the viscosity in the test solutions increased,compared with that in pure ethanol,a 54-fold fluorescence intensity enhancement of NCV was observed in 310 cP of 90%***,NCV successfully exhibited a selective fluorescence response towards monensin-induced cellular viscosity changes in HepG2 *** liver,stomach,and foot plantar of the tested snails were frozen and sectioned for fluorescent imaging experiments after the treatment with different PBQ concentrations over various times.A significant fluorescent increase in the snail's liver was observed upon exposure to 0.75 mg/L PBQ for 72 h,which highlighted an increase in *** and eosin(HE)staining further supported PBQ-induced liver damage with a viscosity increase in *** study provides a new rapid optical visualization method to study the killing mechanisms of PBQ and may help discover new chemicals that control snail populations.

关键词： Fluorescence sensor Viscosity Pomacea canaliculata Molluscicide mechanisms Bio-imaging

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