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Impact of variations of threshold voltage and hold voltage of threshold switching selectors in 1S1R crossbar array

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Chinese Physics B 2018年第11期27卷 630-633页

作者： Yu-Jia Li hua-qiang wu Bin Gao Qi-Lin hua Zhao Zhang Wan-Rong Zhang He Qian Faculty of Information Technology Beijing University of TechnologyBeijing 100124China Institute of Microelectronics Tsinghua UniversityBeijing 100084China

The impact of the variations of threshold voltage(V_(th))and hold voltage(V_(hold))of threshold switching(TS)selector in1 S1 R crossbar array is *** on ON/OFF state I–V curves measurements from a large number of Ag-filament TS selectors,V_(th)and V_(hold)are extracted and their variations distribution expressions are obtained,which are then employed to evaluate the impact on read process and write process in 32×321 S1 R crossbar array under different bias *** results indicate that V_(th)and V_(hold)variations of TS selector can lead to degradation of 1 S1 R array performance parameters,such as minimum read/write voltage,bit error rate(BER),and power *** the read process,a small V_(hold)variation not only results in the minimum read voltage increasing but it also leads to serious degradation of *** the standard deviation of V_(hold)and V_(th)increases,the BER and the power consumption of 1 S1 R crossbar array under 1/2 bias,1/3 bias,and floating scheme degrade,and the case under 1/2 bias tends to be more serious compared with other two *** the write process,the minimum write voltage also increases with the variation of V_(hold)from small to large value.A slight increase of V_(th)standard deviation not only decreases write power efficiency markedly but also increases write power *** results have reference significance to understand the voltage variation impacts and design of selector properly.

关键词： RRAM threshold switching selector crossbar array variation

CSHINE for studies of HBT correlation in heavy ion reactions

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Nuclear Science and Techniques 2021年第1期32卷 27-34页

作者： Yi-Jie Wang Fen-Hai Guan Xin-Yue Diao qiang-hua wu Xiang-Lun Wei He-Run Yang Peng Ma Zhi Qin Yu-Hao Qin Dong Guo Rong-Jiang Hu Li-Min Duan Zhi-Gang Xiao Department of Physics Tsinghua UniversityBeijing 100084China Institute of Modern Physics Lanzhou 730000China

The compact spectrometer for heavy ion experiment(CSHINE)is under construction for the study of isospin chronology via the Hanbury Brown–Twiss(HBT)particle correlation function and the nuclear equation of state of asymmetrical nuclear *** CSHINE consists of silicon strip detector(SSD)telescopes and large-area parallel-plate avalanche counters,which measure the light charged particles and fission fragments,*** phase I,two SSD telescopes were used to observe 30 MeV/u 40Ar?197Au *** results presented here demonstrate that hydrogen and helium were observed with high isotopic resolution,and the HBT correlation functions of light charged particles could be constructed from the obtained data.

关键词： Silicon strip detector Telescope HBT correlation function Nuclear equation of state

Reconstruction of fission events in heavy ion reactions with the compact spectrometer for heavy ion experiment

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Nuclear Science and Techniques 2022年第4期33卷 1-9页

作者： Xin-Yue Diao Fen-Hai Guan Yi-Jie Wang Yu-Hao Qin Zhi Qin Dong Guo qiang-hua wu Da-Wei Si Xuan Zhao Sheng Xiao Yao-Peng Zhang Xiang-Lun Wei Hai-Chuan Zou He-Run Yang Peng Ma Rong-Jiang Hu Li-Min Duan Artur Dobrowolski Krzysztof Pomorski Zhi-Gang Xiao Department of Physics Tsinghua UniversityBeijing 100084China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Physics Maria Curie Skłodowska UniversityLublin 20031Poland

We report a reconstruction method for fast-fission events in 25 MeV/u^(86)Kr +^(208)Pb reactions at the Compact Spectrometer for Heavy Ion Experiment(CSHINE). The fission fragments(FFs) are measured using three large-area parallel-plate avalanche counters, which can deliver the position and arrival timing information of the fragments. The start timing information is provided by the radio frequency of the cyclotron. Fission events were reconstructed using the velocities of the two FFs. The broadening of both the velocity distribution and azimuthal difference of the FFs decreases with the folding angle, in accordance with the picture that fast fission occurs. The anisotropic angular distribution of the fission axis also consistently reveals the dynamic features of fission events.

关键词： Fast fission Heavy ion reactions Parallelplate avalanche counter CSHINE

Fission fragment mass yields of Th to Rf even-even nuclei

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Chinese Physics C 2021年第5期45卷 179-189页

作者： Krzysztof Pomorski Jose M.Blanco Pavel V.Kostryukov Artur Dobrowolski Bozena Nerlo-Pomorska Michal Warda Zhi-Gang Xiao Yong-Jing Chen Li-Le Liu Jun-Long Tian Xin-Yue Diao qiang-hua wu Institute of Physics Maria Curie Sklodowska University20-03 I LublinPoland Department of Physics Tsinghua UniversityBeijing 100084China China Institute of Atomic Energy Bejjing 102413China School of Physics and Electrical Engineering Anyang Normal UniversityAnyang 455000China

Fission properties of the actinide nuclei are deduced from theoretical *** investigate potential energy surfaces and fission barriers and predict the fission fragment mass yields of actinide *** results are compared with experimental data where *** calculations were performed in the macroscopic-microscopic approximation With the Lublin-Strasbourg Drop(LSD)for the macroscopic part,and the microscopic energy corrections were evaluated in the Yukawa-folded *** Fourier nuclear shape parametrization is used to describe the nuclear shape,including the non-axial degree of *** fission fragment mass yields of the nuclei considered are evaluated within a 3D colletive model using the Borm-Oppenheimer approximation.

关键词： nuclear fission mac-mic model fission barrier heights fragment mass yields

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基于激光自混合干涉法的微振动测量

北京理工大学学报 2017年第6期37卷 584-589页

作者：罗会甫王扬红朱炜陈强华吴欢马斌武赵振峰北京理工大学机械与车辆学院北京100081 北京理工大学机电学院北京100081

激光自混合干涉法由于其测量精度高、光路简单、准直性好等优点,十分适合于微小振动的测量.然而在测量微振动时,由于被测目标振幅微小且大多情况下其表面反射系数很低,造成测量信号的幅值较小以及光反馈导致的信号波形倾斜不明显,给测... 详细信息

激光自混合干涉法由于其测量精度高、光路简单、准直性好等优点,十分适合于微小振动的测量.然而在测量微振动时,由于被测目标振幅微小且大多情况下其表面反射系数很低,造成测量信号的幅值较小以及光反馈导致的信号波形倾斜不明显,给测量信号解调带来了很大难度.在自混合干涉光路中添加一个预反馈镜,构成带预反馈的干涉光路系统,可将测量信号增强2~4倍.同时,推导"基频-极值点判定算法"的频率幅值解调公式,建立了模型算法,实现自混合干涉信号的解调.理论分析和实验表明,频率测量的误差小于2.5%,振幅测量的误差小于5%.

关键词：激光自混合干涉预反馈基频极值点

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我国海洋产业开发潜力评价

中国渔业经济 2017年第1期35卷 82-89页

作者：李华高强吴梵中国海洋大学管理学院山东青岛266100

从海洋产业开发潜力的内涵出发建立评价指标体系,构建模型评价我国沿海地区海洋产业开发潜力,并分析影响其变化的深层原因。结果表明:(1)我国海洋产业开发潜力总体呈上升趋势,并在区域分布上表现为环渤海地区显著上升,长三角地区略有下... 详细信息

从海洋产业开发潜力的内涵出发建立评价指标体系,构建模型评价我国沿海地区海洋产业开发潜力,并分析影响其变化的深层原因。结果表明:(1)我国海洋产业开发潜力总体呈上升趋势,并在区域分布上表现为环渤海地区显著上升,长三角地区略有下降,泛珠三角地区稳步上升的空间分异栺局;(2)海洋科技进步是影响我国海洋产业开发潜力最主要的因素,此外,海洋产业结构优化、海域集约利用率提升、海洋污染治理力度加强、海洋生态环境保护投入增多等因素也对海洋产业开发潜力的提高均具有积极的促进作用。

关键词：海洋产业开发潜力区域差异影响因素

“Zero‑Strain” NiNb_(2)O_(6) Fibers for All‑Climate Lithium Storage

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Nano-Micro Letters 2025年第1期17卷 348-360页

作者： Yan Zhao qiang Yuan Liting Yang Guisheng Liang Yifeng Cheng Limin wu Chunfu Lin Renchao Che College of Physics Donghua UniversityShanghai 201620People’s Republic of China School of Materials Science and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-climate Li^(+)-storage anode material due to their fast charge transport,large specific capacities,and resistance to electrolyte ***,their moderate unit-cellvolume expansion(generally 5%–10%)during Li^(+)storage causes unsatisfactory long-term ***,“zero-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with comprehensively good electrochemical *** Li^(+)storage,the expansion of electrochemical inactive NiO_(6) octahedra almost fully offsets the shrinkage of active NbO_(6) octahedra through reversible O *** superior volume-accommodation capability of the NiO_(6) layers guarantees the“zero-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the excellent cyclability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%capacity retention after 1000//2000//1000 cycles at 10C and 25//−10//60℃).This NiNb_(2)O_(6) material further exhibits a large reversible capacity(300//184//318 mAh g−1 at 0.1C and 25//−10//60℃)and outstanding rate performance(10 to 0.5C capacity percentage of 64.3%//50.0%//65.4%at 25//−10//60℃).Therefore,the NiNb_(2)O_(6) fibers are especially suitable for large-capacity,fast-charging,long-life,and all-climate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-strain”mechanism Electrochemical property Harsh-temperature operation Operando characterization

Advancements and Challenges in Organic–Inorganic Composite Solid Electrolytes for All‑Solid‑State Lithium Batteries

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Nano-Micro Letters 2025年第1期17卷 46-97页

作者： Xueyan Zhang Shichao Cheng Chuankai Fu Geping Yin Liguang Wang Yongmin wu hua Huo State Key Laboratory of Space Power‑Sources School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310058People’s Republic of China State Key Laboratory of Space Power-Sources 2965 Dongchuan RoadMinhang DistrictShanghai 200240People’s Republic of China

To address the limitations of contemporary lithium-ion batteries,particularly their low energy density and safety concerns,all-solid-state lithium batteries equipped with solid-state electrolytes have been identified as an up-and-coming *** the various SEs,organic–inorganic composite solid electrolytes(OICSEs)that combine the advantages of both polymer and inorganic materials demonstrate promising potential for large-scale ***,OICSEs still face many challenges in practical applications,such as low ionic conductivity and poor interfacial stability,which severely limit their *** review provides a comprehensive overview of recent research advancements in ***,the influence of inorganic fillers on the main functional parameters of OICSEs,including ionic conductivity,Li+transfer number,mechanical strength,electrochemical stability,electronic conductivity,and thermal stability are systematically *** lithium-ion conduction mechanism of OICSE is thoroughly analyzed and concluded from the microscopic ***,the classic inorganic filler types,including both inert and active fillers,are categorized with special emphasis on the relationship between inorganic filler structure design and the electrochemical performance of ***,the advanced characterization techniques relevant to OICSEs are summarized,and the challenges and perspectives on the future development of OICSEs are also highlighted for constructing superior ASSLBs.

关键词： Composite solid electrolytes Inorganic filler Interfacial stability Li-ion conduction mechanism Characterization techniques

Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats

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Neural Regeneration Research 2025年第5期20卷 1495-1504页

作者： Yunting Xiang Xiangxin Xing Xuyun hua Yuwen Zhang Xin Xue Jiajia wu Mouxiong Zheng He Wang Jianguang Xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected ***,differences among reconstruction strategies at the brain network level have not been *** study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve ***–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper ***-state brain functional magnetic resonance imaging was obtained 7 months after *** independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the *** in intra-network resting-state functional connectivity were compared among the *** muscle reinnervation was assessed by behavioral observation(elbow flexion)and *** results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural *** repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor *** thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve *** areas related to cognition and emotion were enhanced after end-to-side nerve *** study revealed important brain networks related to different nerve *** networks may be potential targets for enhancing motor recovery.

关键词： brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity