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Analytical current model of tunneling field-effect transistor considering the impacts of both gate and drain voltages on tunneling

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Science China(Information Sciences) 2015年第2期58卷 174-181页

作者： WANG Chao wu chunlei WANG JiaXin HUANG QianQian HUANG Ru Key Laboratory of Microelectronic Devices and Circuits Institute of Microelectronics Peking University

In this paper, a closed-form current model for bulk tunneling field-effect transistor(TFET) is put forward. Based on the operation mechanism, the channel surface potential φsf which involves the impact of both the gate and the drain voltages is established for the first time. In addition, a new calculation method for the dynamic tunneling width, which is the critical parameter for the TFET modeling, is derived from the surface potential. The surface-potential-based current model is established which is in a good agreement with TCAD simulation results.

关键词： tunneling field-effect transistor current model surface potential drain voltage tunneling width

A versatile strategy to activate self-sacrificial templated Li_(2)MnO_(3) by defect engineering toward advanced lithium storage

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Journal of Energy Chemistry 2023年第10期85卷 164-180,I0007页

作者： Jian-En Zhou Yanhua Peng Xiaoyan Sang chunlei wu Yiqing Liu Zhijian Peng Hong Ou Yongbo wu Xiaoming Lin Yuepeng Cai Guangzhou Key Laboratory of Materials for Energy Conversion and Storage Joint Laboratory of Energy and Materials Chemistry(South China Normal University-Guangzhou Tianci New Materials Co.Ltd.)Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina National Engineering Research Center for Carbohydrate Synthesis Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of EducationJiangxi Normal UniversityNanchang 330022JiangxiChina Guangzhou Huifu Research Institute Co. LtdNanxiang San LuGuangzhou 510663GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials National Demonstration Center for Experimental Physics EducationSchool of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006GuangdongChina

Despite the dazzling theoretical capacity,the devasting electrochemical activity of Li_(2)MnO_(3)(LMO)caused by the difficult oxidation of Mn4+impedes its practical application as the lithium-ion battery(LIB)*** efficacious activation of the Li_(2)MnO_(3) by importing electrochemically active Mn3+ions or morphological engineering is instrumental to its lithium storage activity and structural integrity upon ***,we propose a conceptual strategy with metal-organic frameworks(MOFs)as self-sacrificial templates to prepare oxygen-deficient Li_(2)MnO_(3)(O_v-LMO)for exalted lithium storage *** to optimized morphological features,LMO materials derived from Mn-BDC(H_(2)BDC=1,4-dicarboxybenzene)delivered superior cycling/rate performances compared with their counterparts derived from Mn-BTC(H_(3)BTC=1,3,5-benzenetricarboxylicacid)and Mn-PTC(H_(4)PTC=pyromellitic acid).Both experimental and theoretical studies elucidate the efficacious activation of primitive LMO materials toward advanced lithium storage by importing oxygen ***,O_v-LMO derived from Mn-BDC(O_v-BDC-LMO)delivered intriguing reversible capacities(179.2 mA h g^(-1)at 20 mA g^(-1)after 200 cycles and 100.1 mA h g^(-1)at 80 mA g^(-1)after 300 cycles),which can be attributed to the small particle size that shortens pathways for Li+/electron transport,the enhanced redox activity induced by abundant oxygen vacancies,and the optimized electronic configuration that contributes to the faster lithium *** work provides insights into the rational design of LMO by morphological and atomic modulation to direct its activation and practical application as an advanced LIB cathode.

关键词： Li_(2)MnO_(3) Metal-organic framework Oxygen vacancy Lithium-ion battery Electrochemical activity

Elucidating the role of embedding dispersed cobalt sites in nitrogen-doped carbon frameworks in Si-based anodes for stable and superior storage

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Journal of Energy Chemistry 2024年第11期98卷 180-195页

作者： Yueying Chen Ping Li Mianying Huang chunlei wu Qianhong Huang Tingyang Xie Xiaoming Lin Akif Zeb Yongbo wu Zhiguang Xu Yuepeng Cai Joint Laboratory of Energy and Materials Chemistry(South China Normal University-Guangzhou Tianci New Materials Co.Ltd.) Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina Department of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022JiangxiChina Guangzhou Huifu Research Institute Co.Ltd Nanxiang San LuGuangzhou 510663GuangdongChina Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

Unsatisfactory conductivity and volume effects have hindered the commercial application of siliconbased materials as advanced anode materials for high-performance lithium-ion batteries. Herein, nitrogen doped carbon silicon matrix composite with atomically dispersed Co sites(Si/Co-N-C) is obtained via the design of the frame structure loaded with nano-components and the multi-element hybrid strategy. Co atoms are uniformly fixed to the N-C frame and tightly packed with nanoscale silicon particles as an activation and protection building block. The mechanism of the N-C framework of loaded metal Co in the Si alloying process is revealed by electrochemical kinetic analysis and ex situ characterization ***, the nitrogen-doped Co site activates the intercalation of the outer carbon matrix to supplement the additional capacity. The Co nanoparticles with high conductivity and support enhance the conductivity and structural stability of the composite, accelerating the Li^(+)/Na^(+) diffusion kinetics. Density functional theory(DFT) calculation confirms that the hetero-structure Si/Co-N-C adjusts the electronic structure to obtain good lithium-ion adsorption energy, reduces the Li^(+)/Na^(+) migration energy *** work provides meaningful guidance for the development of high-performance metal/non-metal modified anode materials.

关键词： Co nanoparticles Nitrogen doped carbon Silicon Lithium/sodium storage Metal-organic frameworks(MOFs)

Cell-penetrating riboflavin conjugate for antitumor photodynamic therapy

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Chinese Chemical Letters 2022年第9期33卷 4339-4344页

作者： chunlei wu Yanyan Li Zhehong Cheng Pengxin Wang Zhilong Ma Ke Liu Yulian Cheng Yimin Zhou Xian Lin Ximing Shao Yong Yang Hongchang Li Lijing Fang Guangdong Key Laboratory of Nanomedicine Institute of Biomedicine and BiotechnologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Department of Biomedical Engineering Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Riboflavin(RF,vitamin B2)is an essential vitamin and has been considered as a promising natural photosensitizer for photodynamic therapy(PDT).However,further exploration of RF in antitumor application was limited by its poor cellular *** this study,using cell-penetrating peptides Arg8,(Cha-Arg)3 and small molecule triphenylphosphine(TPP)as delivery compounds,three RF conjugates were prepared to increase the accumulation of RF in cells,termed as Arg8-RF,(Cha-Arg)3-RF and TPP-RF,*** with TPP-RF and Arg8-RF,(Cha-Arg)3-RF exhibited better cell internalization and stronger cytotoxicity against HeLa cells upon exposure to blue *** researches proved that(Cha-Arg)3-RF generated reactive oxygen species(ROS)under irradiation,which could indiscriminately destroy endogenous proteins and mitochondria,ultimately inducing cell *** work provides a new approach to explore RF as a natural photosensitizer for antitumor photodynamic therapy.

关键词： Riboflavin Antitumor Photodynamic therapy Cell-penetrating peptides

基于光谱特征空间的农田植被区土壤湿度遥感监测

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农业工程学报 2014年第16期30卷 106-112页

作者：吴春雷秦其明李梅张宁北京大学遥感与地理信息系统研究所北京100871 北京跟踪与通信技术研究所北京100094 中国科学院遥感与数字地球研究所北京100094

土壤湿度遥感动态监测在农业生产中具有重要作用。近年来,多种基于光谱特征空间的土壤水分监测指数被陆续提出,并得到广泛关注和应用,但当前多数监测指数未考虑混合像元的影响。该文针对垂直干旱指数(perpendicular drought index,PDI)... 详细信息

土壤湿度遥感动态监测在农业生产中具有重要作用。近年来,多种基于光谱特征空间的土壤水分监测指数被陆续提出,并得到广泛关注和应用,但当前多数监测指数未考虑混合像元的影响。该文针对垂直干旱指数(perpendicular drought index,PDI)在农田植被覆盖区监测精度降低问题,分析了植被覆盖下的PDI误差分布规律,引入垂直植被指数(perpendicular vegetation index,PVI)作为植被覆盖表征量,在PVI-PDI二维空间对PDI模型进行调整,提出了适于植被覆盖的植被调整垂直干旱指数(vegetation adjusted perpendicular drought index,VAPDI),并利用内蒙古明安镇研究区实测土壤湿度数据,对PDI与VAPDI进行了比较和验证。结果表明,在裸土、麦茬、土豆、豇豆4种植被覆盖类型中,PDI与土壤实测含水率的决定系数分别为0.630、0.504、0.571、0.543,VAPDI与土壤实测含水率的决定系数分别为0.599、0.523、0.602、0.585。VAPDI在植被区的误差略小于PDI,一定程度上克服了植被覆盖对监测精度的影响。通过PDI和VAPDI空间分布图的比较也说明,VAPDI对土壤湿度的差别有更好的区分能力,在中尺度土壤表层水分遥感反演方面具有一定的优势。该研究可为农田土壤湿度遥感监测方法选择及监测误差分析提供参考依据。

关键词：土壤湿度遥感植被光谱特征空间

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司法裁判中的法律原则适用质疑

法学杂志 2005年第2期26卷 113-115页

作者：吴春雷天津商学院法政学院天津300134

法律原则的适用是在我国的法学理论上基本达成共识,但是又在司法裁判中尚未得到解决的一个难题。它实际上关系到中国审判权的能否合法行使,以及这种行使究竟在多大程度上能够实行法治。因此,从法治的意义来考察,它是一个需要引起我国的... 详细信息

法律原则的适用是在我国的法学理论上基本达成共识,但是又在司法裁判中尚未得到解决的一个难题。它实际上关系到中国审判权的能否合法行使,以及这种行使究竟在多大程度上能够实行法治。因此,从法治的意义来考察,它是一个需要引起我国的司法改革关注并反思的问题。

关键词：司法裁判行使适用法律原则法治审判权法学理论中国中国实行

Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao Tian chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui wu Shuize Wang Guilin wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

基于固定周转时延协议的UWB无线测距方法研究

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传感技术学报 2013年第11期26卷 1552-1556页

作者：李娟崔学荣吴春雷中国石油大学(华东)计算机与通信工程学院山东青岛266555 中国海洋大学信息科学与工程学院山东青岛266100

Ultra-Wideband(UWB)技术被认为是最适合进行室内无线定位的技术,IEEE802.15.4a给出的TW-TOA(Two Way Time of Arrival)测距协议中采用的是基于时间戳报文的接收-发送周转时延消除的方法,但是同类设备在相同的环境下其周转时延是相同的... 详细信息

Ultra-Wideband(UWB)技术被认为是最适合进行室内无线定位的技术,IEEE802.15.4a给出的TW-TOA(Two Way Time of Arrival)测距协议中采用的是基于时间戳报文的接收-发送周转时延消除的方法,但是同类设备在相同的环境下其周转时延是相同的,所以为了减少测距双方的数据通信量,提出了一种基于固定周转时延的测距方法;为了提高Hello帧的可靠性提出了在初次定位以及在定位过程中当周转时延发生严重漂移的情况下发送基于停-等协议的Hello报文;同时给出了与IEEE802.15.4兼容的MAC子层协议的格式,并给出了Hello报文格式以及包含品质因子的测距应答帧格式。

关键词：超宽带测距方法固定周转时延停等协议定位

全球金融危机治理背景下我国宏观经济调控的策略选择

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东岳论丛 2010年第3期31卷 53-56页

作者：吴春雷费利群山东大学马克思主义学院山东济南250100

2008年全球金融危机的爆发,对世界经济发展产生了深刻的影响。面对这场危害严重的金融危机,世界各国纷纷寻找出路以渡过难关。新的全球金融危机治理时代已经到来。在此背景下,中国的宏观经济调控也应顺应金融全球化趋势,坚持以科学发展... 详细信息

2008年全球金融危机的爆发,对世界经济发展产生了深刻的影响。面对这场危害严重的金融危机,世界各国纷纷寻找出路以渡过难关。新的全球金融危机治理时代已经到来。在此背景下,中国的宏观经济调控也应顺应金融全球化趋势,坚持以科学发展观为指导,以间接调控为主的宏观调控方式,明确结构协调和总量平衡相结合的宏观调控目标,根据经济全球化的新形势,关注国内、国际两个市场,实现内部与外部两个均衡,不断规范和完善宏观调控体系。

关键词：金融全球化金融危机治理宏观经济调控策略