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Hybridization-mediated quasiparticle and phonon dynamics in single crystal cerium films

science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 146-153页

作者： Yunhe Pei Yi Wu Kai Hu Zhengxing Wei YiFeng Yang Yang Liu Jingbo Qi State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 611731China Center for Correlated Matter and Department of Physics Zhejiang UniversityHangzhou 310058China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

We report the ultrafast optical pump-probe spectroscopy measurements on the single-crystal cerium *** experimental results of temperature-dependent quasiparticle dynamics reveal development of the hybridization between localized f moments and conduction electrons,i.e.,evolving from fluctuating hybridization to collective *** phonon renormalization is discovered to appear at the emerging temperature(T^(+))of fluctuating hybridization apart from its known presence at the coherent temperature(T^(*)),and can hardly be explained by the mean-field *** quasiparticle relaxation at high temperatures indicates coexistence of nonthermal electron-electron scattering and inelastic Kondo scattering,while its behavior at low temperatures suggests onset ofαphase in theγ-phase dominated *** also extract the indirect gap below T^(*),representing the appearance of collective *** findings provide novel information about the hybridization and phase evolution in the heavy fermion systems.

关键词： cerium quasiparticle dynamics hybridization phonon renormalization

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Inertial motion of a magnetic hopfion in the framework of internal local modes

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Physical Review B 2024年第9期110卷 094429页

作者： Kelian Lin Zhizhong Zhang Wentao Huang Xueqiang Feng Lei Chen Jinkai Wang Kun Zhang Weisheng Zhao Yue Zhang Fert Beijing Research Institute MIIT Key Laboratory of Spintronics School of Integrated Circuit Science and Engineering National Key Laboratory of Spintronics Hangzhou International Innovation Institute Nanoelectronics Science and Technology Center Hefei Innovation Research Institute

Magnetic hopfions are a novel kind of topological solitons existing in three-dimensional (3D) magnets, including chiral magnets, frustrated magnets, and magnetic multilayers. Their rich dynamics is demonstrated to be promising in constructing nonconventional computing architectures. However, the mechanism of a hopfion's inertial motion, which is associated with finding its internal eigenmodes, is still being explored either by rigid-body approximation or by 3D micromagnetic simulation. The first neglects the excitation of internal eigenmodes, while the latter costs substantial computing resources but cannot exhaust the topic. In this paper, a framework based on local eigenmodes is proposed to calculate inertial motion. Utilizing the variational method, the complexity of solving inertial motion is significantly reduced to an eigenproblem with fewer dimensions, thereby fully revealing the modulation mechanism of a hopfion's inertia. We calculate two kinds of inertial motion: translation and rotation, within our framework. This demonstrates that our framework is a comprehensive tool for studying inertial motion. Our research highlights the fascinating dynamics of hopfions and is expected to facilitate the modulation and manipulation of hopfions for wider applications.

关键词： Magnetic texture Solitons Spin dynamics Linear spin wave theory Variational wave functional methods

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Space Detector Health Prediction Based on Online Neural Network 1

Space Detector Health Prediction Based on Online Neural Netw...

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2022 1st International Conference on Advances in Modern Physics sciences and Engineering technology, ICPSET 2022

作者： Zhang, Ying Tian, Feng Chen, Wei Li, Ran Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

The paper presents a real - time online neural network algorithm for space detector health prediction. This method is suitable for embedded space detector, avoiding the disposal scheme that can not be processed online and can only be remedied afterwards, and adopting embedded real-time neural network model with preserved performance after compression. It consists of five parts: data input simulation, data set training model, prediction model, combination model and health degree calculation. © Published under licence by IOP Publishing Ltd.

关键词： Health

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Interference Suppression and Jitter Elimination Ability-Based Adaption Tracking Guidance for Robotic Fishes

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 126-137页

作者： Dongfang Li Jie Huang Rob Law Xin Xu Limin Zhu Edmond Q.Wu IEEE the School of Electrical Engineering and Automation Fuzhou University the Key Laboratory of System Control and Information Processing Ministry of Education the School of Electrical Engineering and Automation Fuzhou University 5G+Industrial Internet Institute Fuzhou University the University of Macau the College of Mechatronics and Automation National University of Defense Technology the School of Mechanical Engineering Shanghai Jiao Tong University the Department of Computer Science and Engineering Shanghai Jiao Tong University

This work presents an adaptive tracking guidance method for robotic fishes. The scheme enables robots to suppress external interference and eliminate motion jitter. An adaptive integral surge line-of-sight guidance rule is designed to eliminate dynamics interference and sideslip issues. Limited-time yaw and surge speed observers are reported to fit disturbance variables in the model. The approximation values can compensate for the system's control input and improve the robots' tracking ***, this work develops a terminal sliding mode controller and third-order differential processor to determine the rotational torque and reduce the robots' run jitter. Then, Lyapunov's theory proves the uniform ultimate boundedness of the proposed method. Simulation and physical experiments confirm that the technology improves the tracking error convergence speed and stability of robotic fishes.

关键词： Adaptive integral surge line-of-sight approximation robotic fish speed observer

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High Level integrated System of Space Detector Network Integration 1

High Level Integrated System of Space Detector Network Integ...

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2022 1st International Conference on Advances in Modern Physics sciences and Engineering technology, ICPSET 2022

作者： Zhang, Ying Ma, Zheng Niu, Zhichao Feng, Li Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

In order to meet the requirements of high reliability and low power consumption during the operation of aircraft, this paper adopts the high-level synthesis method to map the high-level language into RTL level code that can run directly on FPGA, and proposes an intelligent integration system for aircraft based on high-level synthesis. The input of aircraft system is image radar sensor data, visible image data and infrared image output. The output of the aircraft system is target identification. Including convolutional IP core, pooled IP core and fully connected IP core. The whole system uses 7-layer deep learning neural network structure, which is convolution IP core, pooled IP core, convolution IP core, pooled IP core, fully connected IP core, fully connected IP core, fully connected IP core. © Published under licence by IOP Publishing Ltd.

关键词： Convolution

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Fiber swelling to improve cycle performance of paper-based separator for lithium-ion batteries application

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Journal of Energy Chemistry 2023年第4期79卷 92-100页

作者： Zhenghao Li Wei Wang Xinmiao Liang Jianlin Wang Yonglin Xu Wei Li College of Light Industry and Food Engineering Guangxi UniversityNanning 530004GuangxiChina Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control Nanning 530004GuangxiChina State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in WuhanWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071HubeiChina

It is well established that paper-based separators display short-circuit risk in lithium-ion batteries due to their intrinsic micron-sized *** this research,we have adjusted pore structure of paper by fiber swelling in liquid ***,the paper-based separator is prepared by propionylated sisal fibers through a wet papermaking *** electron microscope(SEM)and multi-range X-ray nano-computed tomography(CT)images display strong swelling of modified fibers after electrolyte absorption,which can effectively decrease the pore size of *** to the high electrolyte uptake(817 wt%),paper-based separator exhibits ionic conductivity of 2.93 mS cm^(-1).^(7)Li solid-state NMR spectroscopy and Gaussian simulation reveal that the formation of local high Li^(+)ion concentration in the separator and its low absorption energy with Li^(+) ion(62.2 kcal mol^(-1))is conducive to the ionic *** particular,the assembled Li/separator/LiFePO_(4) cell displays wide electrochemical stability window(5.2 V)and excellent cycle performance(capacity retention of 96.6%after 100 cycles at 0.5C)due to the reduced side reactions as well as enhanced electrolyte absorption and retention capacity by *** proposed strategy will provide a novel perspective to design high-performance biobased separators to boost the development of clean and sustainable energy economy.

关键词： Paper-based separators Lithium-ion batteries Electrochemical properties Propionylation

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Three-dimensional measurement with stereo polarization digital image correlation method insensitive to ambient light

Three-dimensional measurement with stereo polarization digit...

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2021 International Conference on Optical Instruments and technology: Optoelectronic Measurement technology and Systems

作者： Xu, Xi Hu, Yao Zhang, Shaohui Hao, Qun Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Laboratory of Science and Technology on Integrated Logistics Support National University of Defense Technology Changsha410073 China

ISBN: (纸本)9781510655690

The measurement of the external topography and deformation of large industrial equipment is important. Photoelectric measurement technology can quickly obtain three-dimensional (3D) topography information of components and equipment. Among them, stereo digital image correlation (stereo-DIC) is a 3D measurement method which combines binocular stereo vision system and digital image cross-correlation matching technology. This method has many advantages such as non-contact, wide measuring range, high speed and single frame reconstruction. However, this passive optical measurement method is prone to the interference of ambient light and the impact of high reflective surface, resulting in data loss, which limits the application scenarios of this method. This paper proposes a method of 3D reconstruction against ambient light based on stereo polarization digital image correlation (stereo-PDIC). In this method, speckle is generated by a laser beam irradiating a ground glass and is then projected onto the surface of the target. The polarization speckle image in single frame and multiple polarization channels is collected by binocular polarizing cameras. The influence of the reflected stray light and ambient light is eliminated and the contrast of speckle image is improved. Stereo matching of the speckle images with the corresponding angle of polarization captured by the binocular polarizing cameras is carried out, and finally the 3D reconstruction of the target is completed. The feasibility of this method is verified by both simulation and experiment. © 2022 SPIE.

关键词： Polarization

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Design of Multi-target Tracking Algorithm Based on Multi-sensor Fusion 3rd

Design of Multi-target Tracking Algorithm Based on Multi-sen...

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3rd International Conference on Artificial Intelligence, 2022

作者： Song, Zhangchi Qiang, Xiaomin Sun, Peng Cao, Laitian Zhang, Lijia Yang, Baisheng Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

ISBN: (纸本)9789811694226

In the modern battlefield environment, the traditional single sensor often cannot give full play to its optimal performance. The advantages of different sensors are used for combined detection and tracking to obtain all-round multi-dimensional information of the target. Through multi-sensor fusion processing, interference is eliminated, and the target state estimation is obtained to achieve precise positioning of the target. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Target tracking

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Design of broadband and low-profile polarization artificial structure for the application of low scattering control 15

Design of broadband and low-profile polarization artificial ...

引用

15th International Conference on Microwave and Millimeter Wave technology, ICMMT 2023

作者： Li, Fengxia Chen, Haiyan Deng, Jing-Ya Xidian University School of Physics Xi'an710071 China University of Electronic Science and Technology of China National Engineering Research Center of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education State Key Laboratory of Electronic Thin Film and Integrated Device Chengdu610054 China

ISBN: (纸本)9798350338874

here, we proposed a broadband and low-profile polarization artificial structure which based on SRR resonant rings, this structure also has the property of high-efficiency and wide-angle. The polarization conversion ratio is over 90% from 8.6 GHz to 23.9 GHz. The low-scattering metasurface for radar cross section (RCS) reduction is designed by arranging the polarization conversion unit and its mirror unit as the checkerboard type according to the phase cancellation principle. The relative bandwidth of 10dB RCS reduction is up to 93%, and the maximum reduction value reaches to 43.7dB. Such a low-scattering metasurface scheme has applications in scattering control, stealth, and security. © 2023 IEEE.

关键词： Polarization

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Lipid-Based Intelligent Vehicle Capabilitized with Physical and Physiological Activation

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Research 2023年第2期2022卷 275-295页

作者： Fuxue Zhang Bozhang Xia Jiabei Sun Yufei Wang Jinjin Wang Fengfei Xu Junge Chen Mei Lu Xin Yao Peter Timashev Yuanyuan Zhang Meiwan Chen Jing Che Fangzhou Li Xing-Jie Liang CAS Key Laboratory for Biomedical Efects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaNo.11First North RoadZhongguancunBeijing 100190China Sino-Danish Center for Education and Research Sino-Danish Cllge of University of Chinese Academyof Sciences Beijing 100049China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China China National Institutes for Food and Drug Control Beijing 102629China Beijing Advanced Innovation Center for Biomedical Engineering School of Engineering MedicineBeihang UniversityBeijing 100083China Advanced Research Institute of Multidisciplinary Science School of Life ScienceSchool of Medical Technology(Institute of Engineering Medicine)Key Laboratory of Molecular Medicine and BiotherapyKey Laboratory of Medical Molecule Science and Pharmaceutics EngineeringBeijing Institute of TechnologyBeijing 100081China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Laboratory of Clinical Smart Nanotechnologies Institute for Regenerative MedicineSechenov UniversityMoscowRussia State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SARChina

Intelligent drug delivery system based on “stimulus-response”mode emerging a promising perspective in next generation lipidbased ***,we classify signal sources into physical and physiological stimulation according t... 详细信息

关键词： classify Lipid Intelligent

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