ieeexplore最新文献_第2页

Oxide-Trapped-Charge-Induced Gate-Diagonal Tunneling Suppression of Gate-Normal Tunnel Field-Effect Transistors 栅极-法向隧道场效应晶体管的氧化俘获电荷诱导栅极-对角隧道抑制

IF 2.1 4区工程技术

IEEE Transactions on Nanotechnology Pub Date : 2025-09-02 DOI: 10.1109/TNANO.2025.3605557

Kyung Min Koo;Jae Seung Woo;Woo Young Choi

引用次数: 0

Development of a Nanosecond-Level High-Voltage Bipolar Square Wave Generator for Insulation Testing of SiC Device Packaging 用于SiC器件封装绝缘测试的纳秒级高压双极方波发生器的研制

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-26 DOI: 10.1109/TPS.2025.3597654

Hao Yan;Xuebao Li;Yan Pan;Rui Jin;Zhibin Zhao

{"title":"Development of a Nanosecond-Level High-Voltage Bipolar Square Wave Generator for Insulation Testing of SiC Device Packaging","authors":"Hao Yan;Xuebao Li;Yan Pan;Rui Jin;Zhibin Zhao","doi":"10.1109/TPS.2025.3597654","DOIUrl":"https://doi.org/10.1109/TPS.2025.3597654","url":null,"abstract":"Aiming at the insulation testing requirements for high-voltage silicon carbide (SiC) device packaging under bipolar square wave voltage conditions, this article proposes and develops a novel nanosecond-level high-voltage bipolar square wave generator based on cascaded half-bridge submodules. Under a typical capacitive load, the generator achieves a peak-to-peak voltage of 10 kV, an adjustable repetition frequency from dc to 50 kHz, and a duty cycle ranging from 0% to 100%, with a rise time compressed to approximately 39 ns. By combining a series-isolated power supply design with common-mode filtering, the proposed approach significantly reduces common-mode interference under high <italic>dv/<italic>dt conditions, ensuring high-voltage isolation of the driver stage and improves electromagnetic compatibility. Compared with traditional pulse topologies such as Blumlein lines, linear transformer drivers (LTDs), and Marx generators, the proposed generator excels in flat-top waveform quality, flexible pulsewidth/duty-cycle modulation, and nanosecond-level rising edges. It thus provides a more precise and reliable experimental platform for investigating partial discharge and insulation-aging mechanisms in high-voltage SiC devices.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2323-2333"},"PeriodicalIF":1.5,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas Temperature Measurement of Low-Current DC Arc in Air by Shadow Imaging 阴影成像法测量空气中小电流直流电弧的气体温度

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-26 DOI: 10.1109/TPS.2025.3531223

Shuqun Wu;Dawei Shi;Yue Guo;Sude Liu;Qiaojue Liu

{"title":"Gas Temperature Measurement of Low-Current DC Arc in Air by Shadow Imaging","authors":"Shuqun Wu;Dawei Shi;Yue Guo;Sude Liu;Qiaojue Liu","doi":"10.1109/TPS.2025.3531223","DOIUrl":"https://doi.org/10.1109/TPS.2025.3531223","url":null,"abstract":"The gas temperature of arc plasma is an essential parameter in studies of the motion and extinguishment of arc, the recovery of gas insulation, and electrode erosion caused by arc discharge. This work measured the spatial distribution of the gas temperature by high-speed shadow imaging of the variation of the arc-induced flow field, which was confirmed by the Boltzmann plot method of the emission of the excited states of copper atoms. A typical low-current dc arc from photovoltaic arc faults was generated in the open air. The results showed that the gas temperature near the cathode was higher than that near the anode, which was different from the arc discharge of a high-current dc arc. It was interesting to observe a dispersed high-temperature region in the upper left, away from the cathode, which was independent of the direction of the electrode movement. When the arc current increased, the high-temperature region became elongated and then connected with the cathode. Detailed analysis of the flow field and the radiation light of the arc showed that the high-temperature region was probably caused by the electrode jet phenomenon of arc discharge.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2342-2350"},"PeriodicalIF":1.5,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gate Tunable Retention in Optoelectronic Synapses Using Oxide Semiconductor Thin Film Transistors 利用氧化半导体薄膜晶体管的光电突触门可调谐保持

IF 2.1 4区工程技术

IEEE Transactions on Nanotechnology Pub Date : 2025-08-25 DOI: 10.1109/TNANO.2025.3602073

Roshni Oommen;Adikiran S B;Akash R.;Gautham G;Aswathi R Nair

{"title":"Gate Tunable Retention in Optoelectronic Synapses Using Oxide Semiconductor Thin Film Transistors","authors":"Roshni Oommen;Adikiran S B;Akash R.;Gautham G;Aswathi R Nair","doi":"10.1109/TNANO.2025.3602073","DOIUrl":"https://doi.org/10.1109/TNANO.2025.3602073","url":null,"abstract":"In this work we propose a biasing scheme to modulate the retention behavior of oxide semiconductor based optoelectronic synapses. The method has been demonstrated using a zinc oxide thin film transistor, which exhibits persistent photoconductivity to UV light. The application of a negative gate bias prevents the recombination of photo-generated carriers, leading to a negligible decay in the post synaptic current and consequently, the retention time could extend beyond <inline-formula><tex-math>$10^{5}$</tex-math></inline-formula>s. The improvement in memory retention is observed in various synaptic functions such as short-term memory, long-term memory, duration-time-dependent plasticity and paired pulse facilitation. A five fold improvement in the % decay of post synaptic current was observed at <inline-formula><tex-math>$V_{gs}$</tex-math></inline-formula> = −5 V, when compared to <inline-formula><tex-math>$V_{gs}$</tex-math></inline-formula> = +5 V. Furthermore, we have assessed the impact of these improved retention properties on the performance of an artificial neural network, designed for pattern recognition of MNIST handwritten digits. The accuracy decayed drastically with time from 96% to nearly 40% at <inline-formula><tex-math>$V_{gs}$</tex-math></inline-formula> = +5 V whereas it drops to only 94% at <inline-formula><tex-math>$V_{gs}$</tex-math></inline-formula> = −5 V.","PeriodicalId":449,"journal":{"name":"IEEE Transactions on Nanotechnology","volume":"24 ","pages":"434-438"},"PeriodicalIF":2.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Semi-Physical Simulation System for Evaluation of Cardiopulmonary Resuscitation Mechanical Compression Parameters Based on Fracture Risk and Blood Perfusion 基于骨折风险和血流灌注的心肺复苏机械按压参数评估半物理模拟系统

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-25 DOI: 10.1109/JSEN.2025.3589561

Yiming Chen;Yifeng Pan;Jiefeng Xu;Yufeng Hu;Mao Zhang;Peng Zhao

{"title":"A Semi-Physical Simulation System for Evaluation of Cardiopulmonary Resuscitation Mechanical Compression Parameters Based on Fracture Risk and Blood Perfusion","authors":"Yiming Chen;Yifeng Pan;Jiefeng Xu;Yufeng Hu;Mao Zhang;Peng Zhao","doi":"10.1109/JSEN.2025.3589561","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3589561","url":null,"abstract":"High-quality cardiopulmonary resuscitation (CPR) is a critical determinant of survival following cardiac arrest. In recent years, mechanical compression has become increasingly prevalent in the emergency management of cardiac arrest. The settings of key compression parameters strongly influence the effectiveness of chest compression. This study developed a semi-physical simulation platform and evaluation criteria to assess the optimal parameters for CPR. A multispring system was designed to simulate the risk of sternal fractures during chest compression. In addition, a blood flow model was constructed to simulate blood perfusion. The evaluation criteria, which include quantifying sternal fracture risk and blood perfusion, are used to calculate the compression effect by inputting the compression force and depth data into the evaluation model. Analysis of variance (ANOVA) demonstrated statistically significant impacts of different compression parameters on compression outcomes. The results demonstrated that the mechanical waveform data more accurately reflected the compression dynamics encountered in real-world CPR circumstances. The trapezoidal compression waveform demonstrated clear superiority over triangle and sine waveforms, enhancing blood circulation. This study’s exploration of the trapezoidal waveform fills a gap in American Heart Association (AHA) guidelines. In addition to the waveform, the study confirmed that a compression depth of 50 mm and a frequency of 120 compressions/min yielded the most effective hemodynamic outcomes. These findings validated and expanded upon the AHA guidelines, offering a novel and comprehensive approach by optimizing CPR effectiveness, improving both patient survival rates and the quality of mechanical resuscitation.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 17","pages":"32301-32311"},"PeriodicalIF":4.3,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demonstration of a Compact CW 263-GHz Extended Interaction Klystron Frequency Upconverter 紧凑型连续波263-GHz扩展交互速调管频率上变频器的演示

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-22 DOI: 10.1109/TPS.2025.3598042

G. Y. Pan;J. C. Cai;Z. X. Su;X. K. Zhang;Z. Zhang;Z. X. Liang;M. Asad;C. Zhang;L. Zeng;X. C. Lin;P. C. Yin;J. Xu;L. N. Yue;H. R. Yin;Y. Xu;G. Q. Zhao;W. X. Wang;Y. Y. Wei

{"title":"Demonstration of a Compact CW 263-GHz Extended Interaction Klystron Frequency Upconverter","authors":"G. Y. Pan;J. C. Cai;Z. X. Su;X. K. Zhang;Z. Zhang;Z. X. Liang;M. Asad;C. Zhang;L. Zeng;X. C. Lin;P. C. Yin;J. Xu;L. N. Yue;H. R. Yin;Y. Xu;G. Q. Zhao;W. X. Wang;Y. Y. Wei","doi":"10.1109/TPS.2025.3598042","DOIUrl":"https://doi.org/10.1109/TPS.2025.3598042","url":null,"abstract":"To realize the miniaturization of RF sources for applications in dynamic nuclear polarization–nuclear magnetic resonance (DNP–NMR) spectroscopy, a compact continuous-wave (CW) 263-GHz extended interaction klystron (EIK) frequency upconverter is designed and proposed in this article, including the high-frequency circuit and a complete compact beam optical system (BOS) based on hybrid permanent magnets. This G-band EIK could be driven by easily accessible W-band signal with power level less than 1 W. A local magnetic field enhancement technology is used in the BOS to allow the beam to be further compressed in the tiny drifting tunnel of output cavity, achieving full cylindrical-beam transmission along the whole hybrid circuit. Particle-in-cell (PIC) simulation results show that the saturated output power of the designed EIK could reach over 250 W at 263 GHz, with an operating beam voltage of 24 kV and a beam current of 0.3 A. In addition, its instantaneous bandwidth is broad enough to meet the requirements of DNP–NMR power source where no instability is observed. The key specifications demonstrate that the designed EIK could stably operate in CW mode. This study is expected to provide new approach for the design of cost-efficient sub-THz EIKs in a compact profile, aiming for DNP–NMR applications and beyond.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2219-2225"},"PeriodicalIF":1.5,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic Effects of Nanosecond Discharge on the Ignition Delay of Ethylene–Air Mixtures 纳秒放电对乙烯-空气混合物点火延迟的动力学影响

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-22 DOI: 10.1109/TPS.2025.3589221

Bin Zhang;Changlin Zou;Shuqun Wu

{"title":"Kinetic Effects of Nanosecond Discharge on the Ignition Delay of Ethylene–Air Mixtures","authors":"Bin Zhang;Changlin Zou;Shuqun Wu","doi":"10.1109/TPS.2025.3589221","DOIUrl":"https://doi.org/10.1109/TPS.2025.3589221","url":null,"abstract":"This study develops a zero-dimensional kinetic model to investigate the effects of nanosecond pulsed discharge on the ignition characteristics of stoichiometric ethylene–air mixtures. The simulation framework combines ZDPlasKin for plasma kinetics and CHEMKIN for combustion chemistry. At an initial temperature of 1200 K, a pressure of 1.1 atm, and a fixed plasma energy input of 20 mJ/cm3, the results show that the nanosecond discharge significantly shortens the ignition delay time compared to autoignition. The ignition enhancement strongly depends on the reduced electric field <inline-formula> <tex-math>$E/N$ </tex-math></inline-formula>, reaching a minimum delay at 200 Td. The primary radicals responsible for promoting ignition—O, H, C2H, and C2H3—are mainly produced through quenching reactions of electronically excited nitrogen species, particularly N2(A) and N2(<inline-formula> <tex-math>$text{a}^{prime }$ </tex-math></inline-formula>). Path flux analysis reveals that electron collisions contribute significantly to O formation, while H and C2H3 are predominantly formed via N2 quenching. The variation in radical production with <inline-formula> <tex-math>$E/N$ </tex-math></inline-formula> explains the non monotonic trend of ignition delay time.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2161-2167"},"PeriodicalIF":1.5,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Modeling of Streamer Propagation in a Nonuniform Electric Field to Assess the Lightning Impulse Flashover Voltage of Polymeric Insulators 非均匀电场中流光传播的数值模拟以评估聚合物绝缘子的雷电闪络电压

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-22 DOI: 10.1109/TPS.2025.3597884

M. Noorul Haque;K. Sunitha

引用次数: 0

Research on Electromagnetic Scattering Characteristics of Moving Time-Varying Dusty Plasma Based on Lorentz-SO-FDTD Method 基于Lorentz-SO-FDTD方法的运动时变尘埃等离子体电磁散射特性研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-22 DOI: 10.1109/TPS.2025.3574812

Yong Bo;Xiaolong Pan;Xianmin Guo;Qingqing Deng;Wei Chen;Lixia Yang

{"title":"Research on Electromagnetic Scattering Characteristics of Moving Time-Varying Dusty Plasma Based on Lorentz-SO-FDTD Method","authors":"Yong Bo;Xiaolong Pan;Xianmin Guo;Qingqing Deng;Wei Chen;Lixia Yang","doi":"10.1109/TPS.2025.3574812","DOIUrl":"https://doi.org/10.1109/TPS.2025.3574812","url":null,"abstract":"This article establishes an electromagnetic scattering model for high-speed moving targets covered by a dusty plasma sheath, utilizing the Bhatnagar-Gross–Krook (BGK) collision model of fully ionized dusty plasma. The proposed Lorentz-shift-operator finite-difference time-domain (Lorentz-SO-FDTD) method is employed to compute the backscatter radar cross section (RCS) of complex blunt cone targets at varying velocities. Furthermore, considering the time-varying nature of electron density in dusty plasma, this study investigates the frequency-domain scattering properties of a moving blunt cone target coated with time-varying dusty plasma. The results indicate that the Doppler effect, caused by the target’s motion, influences both the echo signal and the backward RCS. Additionally, the time-varying characteristics of electron density modulate the scattering field of moving targets. The frequency components of the time-varying electron density and their higher order harmonics can be detected in the scattering field spectrum, leading to a reduction in the primary frequency energy of the echo signal spectrum.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2458-2466"},"PeriodicalIF":1.5,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron Trajectories Analysis in Spatial Harmonic Magnetrons Using Epitrochoidal Curve Theory 用外延曲线理论分析空间谐波磁控管中的电子轨迹

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-08-22 DOI: 10.1109/TPS.2025.3596401

Rajendra Kumar Verma;Shivendra Maurya;N. Kanagraj

{"title":"Electron Trajectories Analysis in Spatial Harmonic Magnetrons Using Epitrochoidal Curve Theory","authors":"Rajendra Kumar Verma;Shivendra Maurya;N. Kanagraj","doi":"10.1109/TPS.2025.3596401","DOIUrl":"https://doi.org/10.1109/TPS.2025.3596401","url":null,"abstract":"The manuscript presents the implementation of epitrochoidal curve theory for the study and analysis of electron trajectories in the boundary conditions of the designed spatial harmonic magnetron (SHM). A model is created based on the epitrochoidal curve theory to study the trajectories of a particle/point with derived equations, offering insights into the understanding of magnetrons by a fundamental theoretical framework. The constants of the theory, namely “a,” “b,” “h,” and their correlation, have been analyzed. Constant “a” controls the expansion radius and thus relates to the dc voltage, constant “b” controls the gyration radius and relates to the magnetic field, and constant “h” controls the periodicity and perturbation of the trajectories and thus relates to the RF voltage. The model provides some derived equations enabling the mapping of these constants within the boundary constraints of the designed SHM to understand certain important phenomena in magnetrons and SHMs. The boundary condition solutions from the model provide the initial guesses of constants, which are further optimized by radial expansion study and trajectory analysis. The trajectories of the generated electron hub reveal the dominance of electron backbombardment phenomena at the cathode when the rotational radial vector rtot < rm mean radius, and anode current collection domination when the stationary radial vector rstat > rm mean radius. Thus, the model highlights the significance of the mean radius and optimizes the ratio of radial expansion constants “a” and “b” and the RF constant “h,” which plays a significant role in the working of magnetron physics. Using the model, the optimum values of the parameters for 22 spokes in SHM have been obtained as <italic>amax = 1.2342, <italic>amin = 0.6996, <italic>bmax = 0.0561, <italic>bmin = 0.0318, <italic>hmax <inline-formula> <tex-math>$= pm 0.2960$ </tex-math></inline-formula>, and <italic>hmin <inline-formula> <tex-math>$= =pm 0.0080$ </tex-math></inline-formula>.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2248-2253"},"PeriodicalIF":1.5,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0