检索结果-南通市图书馆

MoS2 synaptic transistor with one-step manufacture

Science China(Information Sciences) 2025年第1期68卷 357-365页

作者： Yihao GUO Yang WANG Wenjie DENG Yi WU Jingtao LI Kexin LI Yuehui ZHAO Songlin YU Xiaoting WANG Yongzhe ZHANG Hui YAN Key Laboratory of Optoelectronics technology of Education Ministry of China Faculty of Information TechnologyBeijing University of Technology Key Laboratory of Advanced Functional Materials Ministry of Education Faculty of Materials and ManufacturingBeijing University of Technology the 11th research institute of electronics technology group corporation

the synaptic transistor,which is a neuromorphic device with brain-like functions,has garnered significant attention due to characteristics such as low energy consumption,high integration,multiple functions,and high computational ***,the current synaptic transistor possesses a complicated structure and involves complex manufacturing steps,which is not conducive to low-cost,large-scale bionic ***,we introduce a simple MoS2synaptic transistor exhibiting robust synaptic *** transistor utilizes magnetron sputtering manufacture to combine the process of device metal electrode deposition and the introduction of defect states,which helps streamline the manufacturing process into a single *** long-term potentiation and long-term depression in photoelectric coordination are initially ***,biological functions,such as double pulse facilitation and the transformation behavior of short-term memory to long-term memory,are thoroughly evaluated,along with learning-forgetting-relearning ***,the device exhibits robust synaptic plasticity until incident light angles down to 30° to imitate the multi-to-one axon-cellular ***,a classical simulation of Pavlov's dog conditioned reflex is demonstrated along with the multiview extraction *** experimental results demonstrate a promising synaptic transistor with a simple structure,manufacturing technique,and excellent *** further indicates the potential for large-scale integration of bionic neuromorphic systems.

关键词： process optimization artificial synaptic device one-stepmanufacture synaptic plasticity bionic simulation

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Force and impulse multi-sensor based on flexible gate dielectric field effect transistor

引用

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 214-220页

作者： Chao Tan Junling Lü Chunchi Zhang Dong Liang Lei Yang Zegao Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065China the 54th research institute of China electronics technology group corporation Shijiazhuang 050081China

Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other ***-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate ***,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of *** we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric MoS_(2)-FET for force and impulse sensor *** systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).the applied force was detected and recorded by I_(ds)with a low power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on ***,there was almost no performance loss for the device as left in the air for two months.

关键词： flexible gate dielectric transistor force sensor impulse sensor force sensor array

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of carbon content on the microstructure and tensile properties of a low-density steel

引用

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong Jiang Zhongwu Zhang Key Laboratory of Superlight Materials and Surface technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fast PARAFAC decomposition with application to polarization sensitive array parameter estimations

引用

Journal of Systems Engineering and electronics 2018年第4期29卷 714-722页

作者： LI Yang the 10th research institute China Electronics Technology Group Corporation

In tensor theory, the parallel factorization （PARAFAC）decomposition expresses a tensor as the sum of a set of rank-1tensors. By carrying out this numerical decomposition, mixedsources can be separated or unknown system parameters can beidentified, which is the so-called blind source separation or blindidentification. In this paper we propose a numerical PARAFACdecomposition algorithm. Compared to traditional algorithms, wespeed up the decomposition in several aspects, i.e., search di-rection by extrapolation, suboptimal step size by Gauss-Newtonapproximation, and linear search by n steps. the algorithm is ap-plied to polarization sensitive array parameter estimation to showits usefulness. Simulations verify the correctness and performanceof the proposed numerical techniques.

关键词： tensor decomposition parallel factorization(PARAFAC) alternating least squares (ALS) polarization sensi-tive array (PSA)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genetic-optimization framework for SVC transmission based on partial cooperative communication

引用

Journal of Systems Engineering and electronics 2017年第5期28卷 861-870页

作者： Kai Zhao Yongcheng Sun the 28th research institute of China electronics technology group corporation

A genetic-optimization framework based on the partial cooperation communication protocol is proposed for scalable video coding (SVC) stream transmission under multi-relay amplify and forward cooperative networks. Unlike traditional cooperative transmission schemes, the transmission mode for each coded unit in this new protocol can be switched flexibly between direct transmission and cooperative transmission. Obviously, under this protocol, the bandwidth efficiency and transmission robustness can be balanced adaptively according to the priority level of coded units and wireless channel fading characteristics. Based on this, a well-known genetic optimization algorithm-differential evolution is exploited here to find the jointly optimal transmission modes, power allocation and unequal error protection (UEP) channel coding strategies to minimize the end to end reconstructed video distortion. Extensive simulation results show that, compared with classical optimal cooperative UEP transmission schemes, the proposed optimized transmission framework based on the partial cooperative protocol can bring significant peak-signal-to-noise-ratio (PSNR) gains for the reconstructed video in a variety of channel bandwidth, power budget and test sequences.

关键词： scalable video coding partial cooperative communication unequal error protection source-relay power allocation differential evolution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wideband CMOS variable gain amplifier with decibel-linear gain control characteristic

引用

the Journal of China Universities of Posts and Telecommunications 2019年第1期26卷 59-64页

作者： Dun Shubo Li Bin Shi Guochao Yang Geliang the 54th research institute of China electronics technology group corporation

this paper presents a wideband variable gain amplifier(VGA) featuring a decibel-linear gain control characteristic. the decibel-linear gain control function is realized using two VGA cells and a control signal converter. the bandwidth is extended by using cascode architecture together with active inductive load. To achieve small parasitic and low area,direct current(DC) coupling is adopted in the circuit while a DC offset cancellation(DCOC) circuit is introduced to cancel the DC offset. Fabricated in a 0.18 μm complementary metal oxide semiconductor(CMOS) process, the chip occupies an area of 0.53 mm×0.48 mm(including pads) and draws a total current of 9 mA from a 1.8 V supply. the measurement results show that the gain of the VGA varies from-40 dB to 18 dB while the control voltage varies from 0 to 1.8 V, resulting in a total gain control range of 58 dB. the 3 dB bandwidth of the VGA is larger than 260 MHz at maximum gain.

关键词： variable gain amplifier exponential gain control DC offset cancellation wideband

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

SOI-based radial-contour-mode micromechanical disk resonator

引用

Journal of Semiconductors 2011年第11期32卷 72-76页

作者：贾英茜赵正平杨拥军胡晓东李倩 School of Information Engineering Hebei University of Technology the 13th research institute China Electronics Technology Group Corporation China electronics technology group corporation

this paper reports a radial-contour-mode micromechanical disk resonator for radio frequency applications. this disk resonator with a gold plated layer as the electrodes, was prepared on a silicon-on-insulator wafer, which is supported by an anchor on another silicon wafer through Au-Au thermo-compression bonding. the gap between the disk and the surrounding gold electrodes is 100 nm. the radius of the disk is 20μm and the thickness is 4.5 μm. In results, the resonator shows a resonant frequency of 143 MHz and a quality factor of 5600 in vacuum

关键词： RF-MEMS micromechanical disk resonator SOI, thermo-compression bonding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On-machine Precision Preparation and Dressing of Ball-headed Diamond Wheel for the Grinding of Fused Silica

引用

Chinese Journal of Mechanical Engineering 2013年第5期26卷 982-987页

作者： CHEN Mingjun LI Ziang YU Bo PENG Hui FANG Zhen Center for Precision Engineering Harbin Institute of technology the 26th research institute China Electronics Technology Group Corporation

In the grinding of high quality fused silica parts with complex surface or structure using ball-headed metal bonded diamond wheel with small diameter,the existing dressing methods are not suitable to dress the ball-headed diamond wheel precisely due to that they are either on-line in process dressing which may causes collision problem or without consideration for the effects of the tool setting error and electrode *** on-machine precision preparation and dressing method is proposed for ball-headed diamond wheel based on electrical discharge *** using this method the cylindrical diamond wheel with small diameter is manufactured to hemispherical-headed *** obtained ball-headed diamond wheel is dressed after several grinding passes to recover geometrical accuracy and sharpness which is lost due to the wheel wear.A tool setting method based on high precision optical system is presented to reduce the wheel center setting error and dimension *** effect of electrode tool wear is investigated by electrical dressing experiments,and the electrode tool wear compensation model is established based on the experimental results which show that the value of wear ratio coefficient K’ tends to be constant with the increasing of the feed length of electrode and the mean value of K’ is *** experiments of fused silica are carried out on a test bench to evaluate the performance of the preparation and dressing *** experimental results show that the surface roughness of the finished workpiece is 0.03 μ*** effect of the grinding parameter and dressing frequency on the surface roughness is investigated based on the measurement results of the surface *** research provides an on-machine preparation and dressing method for ball-headed metal bonded diamond wheel used in the grinding of fused silica,which provides a solution to the tool setting method and the effect of electrode tool wear.

关键词： precision preparation electrical discharge dressing ball-headed diamond wheel fused silica

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A 60 W Tm:YLF Laser with Triple Tm:YLF Rods

引用

Chinese Physics Letters 2015年第9期32卷 66-69页

作者：朱国利 the 27th research institute of China electronics technology group corporation

A narrow linewidth stable high-power continuous-wave 3.5% Tin3＋ doped LiYF4 （Tm：YLF） laser is reported. By using dual F P etalons and three Tm：YLF rods in a cavity, laser output of ~60 W at 1907.7nm is obtained with a slope efficiency of 34.8%. the M2 factor is found to be ~2.0 under an output power of 30 W. In addition, the relaxation oscillation and efficiency of the Tm：YLF laser are also studied. the relaxation oscillation of the Tm：YLF laser is improved obviously by setting the ratio of pump beam to oscillating laser beam as ~1.5：1 and the efficiency is increased in comparison with the ratio of ~1.3：1.

关键词： Tm A 60 W Tm:YLF Laser with Triple Tm:YLF Rods

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

M-FCN based sea-surface weak target detection

引用

Journal of Systems Engineering and electronics 2021年第5期32卷 1111-1118页

作者： PAN Meiyan SUN Jun YANG Yuhao LI Dasheng YU Junpeng the 14th research institute of China electronics technology group corporation Nanjing 210039China Key Laboratory of IntelliSense technology China Electronics Technology Group CorporationNanjing 210039China

this paper focuses on the sea-surface weak target detection based on memory-fully convolutional network(M-FCN)in strong sea ***,the constant false alarm rate(CFAR)detection method utilizes a low threshold with high probability of false alarm to detect sea-surface weak targets after non-coherent *** the detection threshold can generate a large number of false alarms while increasing the detection rate,and how to suppress a large number of false alarms is the key to improve the performance of weak target ***,the detection result of the low threshold is operated to construct the target matrix suitable for the size of fully convolutional networks and the convolution operator ***,the M-FCN architecture is designed to learn the different accumulation characteristics of the target and the sea clutter between different *** improving the detection performance,the historical multi-frame information is memorized by the network,and the end-to-end structure is established to detect sea-surface weak target *** results on measured data demonstrate that the M-FCN method outperforms the traditional track before detection(TBD)method and reduces false alarm tracks by 35.1%,which greatly improves the track quality.

关键词： sea-surface weak target detection memory-fully convolutional network(M-FCN) multi-frame information end-to-end

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：