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2023 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2023

作者： Ding, Yizhi Zhi, Haochang Li, Jintao Chen, Zhuo Yang, Kaiyue Shan, Weiwei Southeast University Nanjing China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China

ISBN: (纸本)9798350344288

This work presents a compact and robust CMOS temperature sensor with machine learning (ML) assisted design maximizing these performance trade-offs for dynamic voltage and frequency scaling (DVFS) Systems-on-chips (SoC). The gain-bandwidth is enhanced using closed-loop current generation and indirect Miller compensation so that the sensor can be powered by a noisy digital supply. The sensor is fabricated in 28nm CMOS process and occupies 0.0075 mm2 consuming 18.15 μ W at room temperature from a 0.9 V supply. Systematical nonlinearity results in an inaccuracy of 3.1% from 0 °C to 100°C after two-point trim. The sensor achieves a 0.25 K resolution in a 2.44 ms conversion time. The measured supply sensitivity is 7.4 °C/V from 0.8 V to 1.05 V. © 2023 IEEE.

关键词： Machine learning

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High-resolution characterization of the fretting corrosion of Alloy 690 in the simulated secondary water of pressurized water reactor

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Journal of Materials science & technology 2023年第20期151卷 30-40页

作者： You Wang Zhangjian Zhou Hui Wang Jiang Ju Zhao Shen Xiaoqin Zeng School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Interdisciplinary Materials Research Center Institute for Advanced StudyChengdu UniversityChengdu 610041China School of Materials Science and Engineering Shanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai 200240China

The worn scars on Alloy 690 after the fretting corrosion testing in simulated pressurized water reactor(PWR)secondary water have been comprehensively analyzed by scanning transmission electron microscopy(STEM)and transmission Kikuchi diffraction(TKD).The high-quality characterization results experimentally show that the fretting wear accelerates the corrosion of Alloy 690 in two *** first one is to break the integrity of the oxide scale by introducing cavities at the oxide grain *** second one is to alter the microstructure of the underneath matrix,forming a nano-grained matrix *** increased grain boundary density in this layer can accelerate the consumption of Cr in the near-surface *** loss of oxide scale integrity and the accelerated Cr consumption are believed to contribute to the deteriorated corrosion resistance of Alloy 690 during the fretting corrosion process.

关键词： Alloy 690 Corrosion Fretting wear Transmission electron microscopy Transmission Kikuchi Diffraction

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Intelligent Process Control with Uninformative Data 28

Intelligent Process Control with Uninformative Data

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28th International Conference on Automation and Computing, ICAC 2023

作者： Chang, Zeyu Li, Ao-Jin Li, Yun University of Electronic Science and Technology of China Chengdu611731 China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen518110 China

ISBN: (纸本)9798350335859

Intelligence control leverages the power of artificial intelligence (AI). Traditional simulation techniques limited by their dependence on accurate and complete data. To address the issues of a lack of such data in practice, this paper proposes an intelligent system engineering approach to modelling and control. In particular, we introduce the use of a set of local transfer functions to brace a nonlinear system for well-fitted models. Additionally, a networked PID controller is designed using the variable parameter transfer function obtained to adapt to changing operating conditions. Simulations in Simulink are conducted for an AI-based air conditioning control system to meet the required precision. The AI-based approach is seen to be able to model air conditioning temperature control systems accurately, and offers potential to improve control accuracy in real-world applications. © 2023 IEEE.

关键词： Transfer functions

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Dimensionality-driven metal to Mott insulator transition in two-dimensional 1T-TaSe2

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National science Review 2024年第3期11卷 108-118页

作者： Ning Tian Zhe Huang Bo Gyu Jang Shuaifei Guo Ya-Jun Yan Jingjing Gao Yijun Yu Jinwoong Hwang Cenyao Tang Meixiao Wang Xuan Luo Yu Ping Sun Zhongkai Liu Dong-Lai Feng Xianhui Chen Sung-Kwan Mo Minjae Kim Young-Woo Son Dawei Shen Wei Ruan Yuanbo Zhang State Key Laboratory of Surface Physics New Cornerstone Science Laboratory and Department of PhysicsFudan University Shanghai Qi Zhi Institute Shanghai Research Center for Quantum Sciences Institute for Nanoelectronic Devices and Quantum Computing Fudan University Zhangjiang Fudan International Innovation Center Fudan University State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences School of Physical Science and Technology ShanghaiTech University Korea Institute for Advanced Study School of Emerging Technology and Department of Physics University of Science and Technology of China Advanced Light Source Lawrence Berkeley National Laboratory ShanghaiTech Laboratory for Topological Physics Key Laboratory of Materials Physics Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of Sciences High Magnetic Field Laboratory Hefei Institutes of Physical Science Chinese Academy of Sciences Collaborative Innovation Centre of Advanced Microstructures Nanjing University Department of Physics University of Science and Technology of China and Key Laboratory of Strongly Coupled Quantum Matter Physics Chinese Academy of Sciences National Synchrotron Radiation Laboratory University of Science and Technology of China

Two-dimensional materials represent a major frontier for research into exotic many-body quantum phenomena. In the extreme two-dimensional limit, electron-electron interaction often dominates over other electronic energy scales, leading to strongly correlated effects such as quantum spin liquid and unconventional *** dominance is conventionally attributed to the lack of electron screening in the third dimension. Here, we discover an intriguing metal to Mott insulator transition in 1T-TaSe2that defies conventional wisdom. Specifically, we find that dimensionality crossover, instead of reduced screening, drives the transition in atomically thin 1T-TaSe2. A dispersive band crossing the Fermi level is found to be responsible for the bulk metallicity in the material. Reducing the dimensionality,however, effectively quenches the kinetic energy of these initially itinerant electrons, and drives the material into a Mott insulating *** dimensionality-driven metal to Mott insulator transition resolves the long-standing dichotomy between metallic bulk and insulating surface of 1T-TaSe2. Our work further reveals a new pathway for modulating two-dimensional materials that enables exploring strongly correlated systems across uncharted parameter space.

关键词： two-dimensional materials 1T-TaSe2 dimensionality crossover metal to Mott insulator transition

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Dual-GTF: Enhancing Community Detection with Dual-Scale Game Theoretic Framework

Dual-GTF: Enhancing Community Detection with Dual-Scale Game...

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2024 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2024

作者： Shi, Haodong Kang, Zhao Yan, Ke Liu, Sicong Xin, Yichen School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu China Shenzhen Institute for Advanced Study Uestc Shenzhen China Kashi Institute of Electronics and Information Industry Kashi China

ISBN: (纸本)9781665410205

Community detection is a crucial task in complex network analysis, and existing game-theoretic-based community detection methods struggle to achieve a balance between local and global competition and cooperation. This paper introduce a Dual-scale Game theoretical Framework (Dual-GTF) for community detection. First, a new modularity function is proposed, enabling each node to incorporate additional expansion information at the community scale by collaborating closely with the individual scale modularity function. Subsequently, leveraging cooperative and competitive strategies informed by realistic empiricism, this paper integrate community-scale information to facilitate effective role division within communities. Evaluations of real-world datasets demonstrate that this approach, Dual-GTF, achieves superior convergence and performance results in most cases. © 2024 IEEE.

关键词： Complex networks

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Cross-Domain Complementarity and Multi-Time Scale Fusion Based Resource Demand Prediction for Mobile Vehicles 23

Cross-Domain Complementarity and Multi-Time Scale Fusion Bas...

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23rd IEEE International Conference on Communication technology, ICCT 2023

作者： Ouyang, Jie Zhang, Ke Zheng, Hongtai Wu, Fan Huang, Xiaoyan Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China China School of Information and Communication Engineering University of Electronic Science and Technology of China China

ISBN: (纸本)9798350325959

The prediction of mobile vehicle demands serves as an effective solution for addressing the communication resource scarcity caused by the expansion of vehicle-to-Everything (V2X) services, enabling resource scheduling based on future traffic flows. However, due to high mobility of vehicles and stochastic arrival of application demands, vehicular network resources exhibit variations at multiple temporal scales. Traditional resource prediction models based on a single data type often struggle to achieve accurate predictions. Therefore, the key challenge lies in leveraging the complementarity among multiple data types to achieve fusion at different temporal scales and enhance the accuracy of resource prediction models. In this paper, we propose a mobile vehicle resource demand prediction algorithm based on Deep Deterministic Policy Gradient (DDPG) and Dynamic Time Warping (DTW) algorithms, considering the diverse characteristics of multiple data types. In this algorithm, DTW is utilized to capture the variations at different temporal scales in road network traffic flow and user communication, while DDPG leverages their complementarity to improve prediction accuracy. Simulation results demonstrate that the proposed method achieves higher prediction accuracy compared to single-factor prediction methods. © 2023 IEEE.

关键词： Cross-domain Complementarity Multi-time Scale Fusion Resource Prediction

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Electrothermal coupling analysis of microwave windows using finite element method 24

Electrothermal coupling analysis of microwave windows using ...

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24th International Vacuum Electronics Conference, IVEC 2023

作者： Yang, Siyi Xu, Li Yin, Junhui Wang, Hao Li, Xing Li, Bin School of electronic science and engineering University of electronic science and technology of China Chengdu China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China

ISBN: (纸本)9781665473217

With the continuous improvement of the performance of microwave electro-vacuum devices, high-power microwave windows are the key component of high-power microwave electro-vacuum devices, which have important influence on the frequency band, power capacity, reliability and service life of the devices. In this paper, a software package called electrothermal coupling simulator (ETCS) is developed for electrothermal coupling analysis of microwave windows by using the finite element method. The influence of temperature-dependent permittivity of ceramics, high-frequency dielectric loss and ambient temperature of heat dissipation on the transmission characteristics is analyzed. Compared with the commercial software ANSYS, the numerical results demonstrate the correctness of ETCS. © 2023 IEEE.

关键词： Scattering parameters

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Multi-Physics Analysis of Traveling-wave Tube Based on Integrated Framework 24

Multi-Physics Analysis of Traveling-wave Tube Based on Integ...

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24th International Vacuum Electronics Conference, IVEC 2023

作者： Yin, Junhui Xu, Li Yang, Zaichao Yang, Siyi Wang, Hao Li, Xing Li, Bin School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China

ISBN: (纸本)9781665473217

Reliability and stability of structure are important in TWTs design, especially space TWTs. To design the highly reliable and stable TWTs, it is necessary to understand their instabilities in current designs and predict material failure for future designs under all operating conditions which include thermal stress, vibration, and varying temperature environments. Therefore, designers need to study the reliability and stability of TWTs under the influence of multi-physics which include electromagnetic, thermal, and mechanics. In this paper, a multi-physics simulator system has been developed based on integrated framework, which provides a powerful pre-processing front end, graphical, and computational post-processing functionality. The high-frequency circuit simulator, electron optics simulator, mechanics simulator, and thermal simulator are integrated into multi-physics simulator system based on unified data architecture. The numerical results show that the technology proposed in this paper has the same accuracy as CST MPS. © 2023 IEEE.

关键词： Traveling wave tubes

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Thermal Analysis of Traveling-Wave Tubes Considering Thermal Contact Resistance 24

Thermal Analysis of Traveling-Wave Tubes Considering Thermal...

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24th International Vacuum Electronics Conference, IVEC 2023

作者： Liao, Li Xu, Li Yin, Junhui Wang, Hao Li, Xing Li, Bin School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China

ISBN: (纸本)9781665473217

Thermal contact resistance is a non-negligible problem in the thermal analysis of traveling wave tubes. If the influence of thermal contact resistance(TCR) is ignored in the thermal analysis of traveling wave tube, there will be some difference between the simulated temperature and the actual value, or even completely wrong results. In this paper, a general finite element numerical solution technique for the TCR is proposed, which treats the TCR as the boundary condition of heat conduction problem. This technique does not need to modify the geometric model or introduce the contact element, which greatly improves the efficiency of solving the TCR problems. The numerical results show that the proposed method has the same calculation accuracy as CST MPS, but has better calculation performance, which would be very useful for the design of traveling wave tubes. © 2023 IEEE.

关键词： Finite element method

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Unlocking the stable interface in aqueous zinc-ion battery with multifunctional xylose-based electrolyte additives

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Journal of Energy Chemistry 2025年第1期100卷 770-778页

作者： Xiaoqin Li Jian Xiang Lu Qiu Xiaohan Chen Yinkun Zhao Yujue Wang Qu Yue Taotao Gao Wenlong Liu Dan Xiao Zhaoyu Jin Panpan Li Institute for Advanced Study Chengdu UniversityChengdu 610106SichuanChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina College of Food and Biological Engineering Chengdu UniversityChengdu 610106SichuanChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina College of Materials Science and Engineering Sichuan UniversityChengdu 610065SichuanChina

The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries(AZIBs). These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose(Xylo) molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn^(2+)ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.

关键词： Aqueous Zn-ion battery Electrolyte additive Solvation structure Electrode/electrolyte interface Zn anode

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