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Safety Protection Method of Rehabilitation Robot Based on fNIRS and RGB-D Information Fusion

Journal of Shanghai Jiaotong university(Science) 2022年第1期27卷 45-54页

作者： LI Dong FAN Yulin LU Na CHEN Guodong WANG Zheng CHI Wenzheng School of Mechanical and Electrical Engineering/Jiangsu Provincial Key Laboratory of Advanced Robotics/Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215123JiangsuChina Department of Gerontology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai 200233China Department of Instrument Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

In order to improve the safety protection performance of the rehabilitation robot,an active safety protection method is proposed in the rehabilitation *** oxyhemoglobin concentration information and RGB-D information are combined in this method,which aims to realize the comprehensive monitoring of the invasion target,the patient’s brain function movement state,and the joint angle in the rehabilitation *** main focus is to study the fusion method of the oxyhemoglobin concentration information and RGB-D information in the rehabilitation *** analysis of brain functional connectivity coefficient was used to distinguish the basic motion *** human skeleton recognition algorithm was used to realize the angle monitoring of the upper limb joint combined with the depth *** with speed and separation monitoring,the protection method of multi-information fusion is safer and more comprehensive for stroke *** building the active safety protection platform of the upper limb rehabilitation robot,the performance of the system in different safety states is tested,and the safety protection performance of the method in the upper limb rehabilitation scene is verified.

关键词： upper limb rehabilitation robot safety protection functional near-infrared spectroscopy(fNIRS) multi-information fusion

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Room-temperature ferromagnetism and piezoelectricity in metalfree 2D semiconductor crystalline carbon nitride

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Nano Research 2024年第6期17卷 5670-5679页

作者： Yong Wang Dingyi Yang Wei Xu Yongjie Xu Yu Zhang Zixuan Cheng Yizhang Wu Xuetao Gan Wei Zhong Yan Liu Genquan Han Yue Hao Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory School of MicroelectronicsAcademy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Emerging Device and Chip Laboratory Hangzhou Institute of TechnologyXidian UniversityHangzhou 311200China INRS Centre for Energy Materials and Telecommunications1650 Boul.Lionel BouletVarennesQC J3X 1P7Canada National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for NanotechnologyNanjing UniversityNanjing 210093China School of Education Jiangsu Open UniversityNanjing 210036China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Department of Applied Physical Sciences The University of North Carolina at Chapel HillChapel HillNC 27514USA Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710129 China

Two-dimensional(2D)materials that combine ferromagnetic,semiconductor,and piezoelectric properties hold significant potential for both fundamental research and spin electronic ***,the majority of reported 2D ferromagnetic-semiconductor-piezoelectric materials rely on d-electron systems,which limits their practical applications due to a Curie temperature lower than room temperature(RT).Here,we report a high-crystallinity carbon nitride(CCN)material based on sp-electrons using a chemical vapor deposition *** exhibits a band gap of 1.8 eV and has been confirmed to possess substantial in-plane and out-of-plane ***,we acquired clear evidences of ferromagnetic behavior at room *** structural characterizations combined with theoretical calculations reveal that incorporating structural oxygen into the highly ordered heptazine structure causes partial substitution of nitrogen sites,which is primarily responsible for generating room-temperature ferromagnetism and *** a result,the strain in wrinkles can effectively modulate the domain behavior and piezoelectric potential at room *** addition of RT ferromagnetic-semiconductor-piezoelectric material based on sp-electrons to the family of two-dimensional materials opens up numerous possibilities for novel applications in fundamental research and spin electronic devices.

关键词： crystallinity carbon nitride room-temperature ferromagnetism piezoelectricity magnetic force microscopy density functional theory(DFT)calculations

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Dynamic Obstacle Avoidance for Application of Human-Robot Cooperative Dispensing Medicines

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Journal of Shanghai Jiaotong university(Science) 2022年第1期27卷 24-35页

作者： WANG Zheng XU Hui LU Na TAO Wei CHEN Guodong CHI Wenzheng SUN Lining Department of Gerontology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai 200233China School of Mechanical and Electrical Engineering/Jiangsu Provincial Key Laboratory of Advanced Robotics/Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215123JiangsuChina Department of Instrument Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

For safety reasons,in the automated dispensing medicines process,robots and humans cooperate to accomplish the task of drug sorting and *** this dynamic unstructured environment,such as a humanrobot collaboration scenario,the safety of human,robot,and equipment in the environment is *** this work,a practical and effective robot motion planning method is proposed for dynamic unstructured *** figure out the problems of blind zones of single depth sensor and dynamic obstacle avoidance,we first propose a method for establishing offline mapping and online fusion of multi-sensor depth images and 3D grids of the robot workspace,which is used to determine the occupation states of the 3D grids occluded by robots and obstacles and to conduct real-time estimation of the minimum distance between the robot and ***,based on the reactive control method,the attractive and repulsive forces are calculated and transformed into robot joint velocities to avoid obstacles in real ***,the robot’s dynamic obstacle avoidance ability is evaluated on an experimental platform with a UR5 robot and two KinectV2 RGB-D sensors,and the effectiveness of the proposed method is verified.

关键词： automated dispensing medicines dynamic unstructured environment human-robot collaboration dynamic obstacle avoidance multi-sensor depth images 3D grids reactive control method

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Electron-Exciton Coupling in 1T-TiSe_(2)Bilayer

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Chinese Physics Letters 2023年第5期40卷 59-65页

作者：朱立赵伟民贾振宇李慧平谢学栋李启远汪琪玮窦立国胡聚罡张翼朱文光于顺利李建新李绍春 National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresSchool of PhysicsNanjing UniversityNanjing 210093China International Center for Quantum Design of Functional Materials(ICQD) Hefei National Laboratory for Physical Sciences at the Microscaleand Synergetic Innovation Center of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Strongly Coupled Quantum Matter Physics of Chinese Academy of Sciences School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026China Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing UniversityNanjing 210093China

Excitons in solid state are bosons generated by electron-hole pairs as the Coulomb screening is sufficiently *** exciton condensation can result in exotic physics such as super-fluidity and insulating *** charge density wave(CDW)state,1T-TiSe_(2) is one of the candidates that may host the exciton ***,to envision its excitonic effect is still challenging,particularly at the two-dimensional limit,which is applicable to future ***,we realize the epitaxial 1T-TiSe_(2) bilayer,the two-dimensional limit for its 2×2×2 CDW order,to explore the exciton-associated *** means of high-resolution scanning tunneling spectroscopy and quasiparticle interference,we discover an unexpected state residing below the conduction band and right within the CDW gap *** corroborated by our theoretical analysis,this mysterious phenomenon is in good agreement with the electron-exciton *** study provides a material platform to explore exciton-based electronics and opto-electronics.

关键词： effect limit Electron

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Exotic Temperature Dependence of Uniaxial Magnetocrystalline Anisotropy in a Two-Dimensional Ferromagnet

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Physical Review Letters 2025年第11期134卷 116702-116702页

作者： Jiawei Liu Jiawei Jiang Liming Wang Liang Zhou Rui Liang Shuilin Li Ziying Li Kai Chang Hongxin Yang National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing University Nanjing 210093 China Center for Quantum Matter School of Physics Zhejiang University Hangzhou 310058 China

Uniaxial magnetocrystalline anisotropy (UMA) is the foundation for data storage technology as well as for realizing topological and quantum phases. Combined with the confined electrons and distinct lattice dynamics of two-dimensional (2D) materials, exploring UMA, especially its temperature dependence in 2D ferromagnets, is significant. Here, we report an unprecedented exotic behavior of temperature dependence of UMA in the 2D van der Waals ferromagnet Fe3GeTe2. Below 20 K, the temperature-dependent UMA constant Ku1(T) exhibits a canonical Akulov-Zener-Callen-Callen-type Ku1(T) with rapidly decreasing trend. Strikingly, above 20 K, it transitions to an anomalous Carr-type one with rapidly increasing trend. Temperature-dependent x-ray diffraction measurements combined with first-principles calculations reveal that the enhanced ferromagnetic exchange coupling caused by the lattice variation preserves the two-ion anisotropy at high temperature. Therein, both the itinerant nature and lattice thermal expansion are altered, thus triggering such exotic Ku1(T). Our findings not only deepen the basic understanding of the temperature dependence of UMA but also favor optimizing the ultra-high-density heat-assisted magnetic recording technology by considering the cooperation between lattice and ferromagnetic exchange coupling.

关键词： Magnetocrystalline anisotropy

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Mag-Boost Mechanism for High-Power Ocean Wave Energy Harvesting

SSRN

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SSRN 2024年

作者： Tang, Tianyi Li, Yunfei Huang, Manjuan Mei, Mingqi Wang, Zizhao Zha, Fusheng Sun, Lining Liu, Huicong School of Mechanical and Electrical Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Soochow University Suzhou215123 China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin150001 China

Ocean wave energy is a highly anticipated renewable energy source. However, due to the ultra-low frequency and random characteristics of ocean waves, efficient and high-power energy harvesting has been a great challenge. By ingeniously leveraging the phenomenon of sudden magnetic-torque variation in orthogonal magnetic fields, this paper proposes an innovative Mag-Boost mechanism, which is capable of converting ultra-low excitation below 1Hz to high-frequency oscillations of power-magnet more than 50Hz without direct contact. The energy conversion efficiency of this mechanism can be as high as 89.3%. By integrating four Mag-boost units into a circular array, a high-power wave energy harvester (WEH) with ultra-low frequency response capabilities has been proposed. At a frequency of 1Hz and an inclination angle of 30°, the WEH demonstrated a high output performance with power of 1.79W and power density of 1.88kW/m³, which is an order of magnitude higher than those of the previous reported ones. During the off-shore test at Yellow Sea, the WEH reached the peak open-circuit voltage of 10V, ensuring completely independent and stable power supply for wireless temperature and humidity sensors. Furthermore, the Mag-Boost mechanism also shows considerable potential for harvesting other forms of low-frequency environmental energy, including wind, vibration, and human kinetic energy. © 2024, The Authors. All rights reserved.

关键词： Water waves

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Direct observation of the distribution of impurity in phosphorous/boron co-doped Si nanocrystals

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Chinese Physics B 2023年第12期32卷 454-458页

作者：李东珂韩俊楠孙腾陈佳明 Etienne Talbot Rémi Demoulin 陈王华皮孝东徐骏陈坤基 School of Electronic Science and Engineering National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Provincial Key Laboratory of Advanced Photonic and Electronic MaterialsNanjing UniversityNanjing 210000China ZJU-Hangzhou Global Scientific and Technological Innovation Center School of Materials Science and EngineeringZhejiang UniversityHangzhou 311200China Univ Rouen Normandie INSA Rouen NormandieCNRSGPM UMR 6634F-76000 RouenFrance School of Physical Science and Technology Ningbo UniversityNingbo 315211China

Doping in Si nanocrystals is an interesting topic and directly studying the distribution of dopants in phosphorous/boron co-doping is an important issue facing the scientific *** this study,atom probe tomography is performed to study the structures and distribution of impurity in phosphorous/boron co-doped Si nanocrystals/SiO_(2) *** with phosphorous singly doped Si nanocrystals,it is interesting to find that the concentration of phosphorous in co-doped samples can be significantly *** simulation suggests that phosphorous-boron pairs are formed in co-doped Si nanocrystals with the lowest formation energy,which also reduces the formation energy of phosphorous in Si *** results indicate that co-doping can promote the entry of phosphorous impurities into the near-surface and inner sites of Si nanocrystals,which provides an interesting way to regulate the electronic and optical properties of Si nanocrystals such as the observed enhancement of conductivity and sub-band light emission.

关键词： Si nanocrystals phosphorous and boron co-doping impurity distribution

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Chemical characteristics and sources apportionment of volatile organic compounds in the primary urban area of Shijiazhuang,North China Plain

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Journal of Environmental Sciences 2025年第3期149卷 465-475页

作者： Xiao Zhang Junfeng Wang Jiangwei Zhao Junliang He Yali Lei Kai Meng RuiWei Xue Zhang Miaomiao Zhang Shuangying Ni Eleonora Aruffo College of geographical sciences and Environment Shijiazhuang UniversityShijiazhuang 050035China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Hebei Province Ecology Environmental Monitoring Center Shijiazhuang 050037China Key Lab of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Hebei Provincial Institute of Meteorological Sciences Shijiazhuang 050021China Key Laboratory of Meteorology and Ecological Environment of Hebei Province Shijiazhuang 050021China Hebei Provincial Academy of Ecological Environmental Science Shijiazhuang 050037China Department of Advanced Technologies in Medicine&Dentistry University“G.d’Annunzio”of Chieti-PescaraChieti 66100Italy Center for Advanced Studies and Technology-CAST Chieti 66100Italy

VOCs(Volatile organic compounds)exert a vital role in ozone and secondary organic aerosol production,necessitating investigations into their concentration,chemical characteristics,and source apportionment for the effective implementation of measures aimed at preventing and controlling atmospheric *** to October 2020,onlinemonitoringwas conducted in the main urban area of Shijiazhuang to collect data on VOCs and analyze their concentrations and ***,the PMF(positive matrix factorization)method was utilized to identify the VOCs *** indicated that the TVOCs(total VOCs)concentration was(96.7±63.4μg/m^3),with alkanes exhibiting the highest concentration of(36.1±26.4μg/m^3),followed by OVOCs(16.4±14.4μg/m^3).The key active components were alkenes and aromatics,among which xylene,propylene,toluene,propionaldehyde,acetaldehyde,ethylene,and styrene played crucial roles as reactive *** sources derived from PMF analysis encompassed vehicle emissions,solvent and coating sources,combustion sources,industrial emissions sources,as well as plant sources,the contribution of which were 37.80%,27.93%,16.57%,15.24%,and 2.46%,***,reducing vehicular exhaust emissions and encouraging neighboring industries to adopt low-volatile organic solvents and coatings should be prioritized to mitigate VOCs levels.

关键词： Volatile organic compounds Pollution characteristics Ozone formation potential OH radical loss rate Source apportionment

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A Variable-speed Silent Speech Recognition Method based on Surface Electromyography Signal 8

A Variable-speed Silent Speech Recognition Method based on S...

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8th IEEE International Conference on advanced robotics and Mechatronics, ICARM 2023

作者： Liang, Sui Xu, Yin Yuan, Zhaohua Sun, Lining Li, Weida Zhang, Hongmiao School of Mechanical and Electric Engineering Soochow University Suzhou215021 China Zoomlion Heavy Industry Science and Technology Co. Ltd Suzhou215021 China Soochow University Jiangsu Provincial Key Laboratory of Advanced Robotics Suzhou215021 China

ISBN: (纸本)9798350300178

In the practical implementation of silent speech recognition based on surface electromyography (sEMG) signal, the change in the subjects' speech speed will affect the recognition performance. To mitigate this effect, a silent speech recognition method based on dynamic time warping (DTW) algorithm is proposed in this paper. Specifically, the facial sEMG signals of 22 Chinese words are collected, the energy threshold method is used to detect the active segment, the root mean square feature is extracted, and finally the DTW algorithm is used for recognition. The experimental results show that the method is robust to silent speech recognition tasks with different speech speeds. The average accuracy of using the DTW algorithm to classify uniform-speed words is 94.55%, and that of variable-speed words is 71.82%. In addition, the proposed method is suitable for few samples learning, which means it can quickly adapt to new tasks and individuals. These findings provide a novel way for the practical application of sEMG based silent speech recognition. © 2023 IEEE.

关键词： Speech recognition

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Large-Area Freestanding Weyl Semimetal WTe_(2) Membranes

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Chinese Physics Letters 2021年第1期38卷 73-77页

作者： Yequan Chen Ruxin Liu Yongda Chen Xiao Yuan Jiai Ning Chunchen Zhang Liming Chen Peng Wang Liang He Rong Zhang Yongbing Xu Xuefeng Wang Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineeringand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China College of Engineering and Applied Sciences Nanjing UniversityNanjing 210093China

We report a universal transfer methodology for producing artificial heterostructures of large-area freestanding single-crystalline WTe_(2) membranes on diverse target *** transferred WTe_(2) membranes exhibit a nondestructive structure with a carrier mobility comparable to that of as-grown films(∼179–1055 cm^(2)·V^(−1)·s^(−1)).Furthermore,the transferred membranes show distinct Shubnikov–de Haas quantum oscillations as well as weak localization/weak *** results provide a new approach to the development of atom manufacturing and devices based on atomic-level,large-area topological quantum films.

关键词： quantum standing topological

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