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A Novel Route Planning Scheme Based on Dynamic Time Variables

Journal of Physics: Conference Series 2021年第1期2068卷

作者： Jinghe Zhang Lei Li Yuechao Zhang Shaofeng Cheng Weidong Fang BUAA EMC Technology Institute Beihang University Beijing 100083 P. R. China Beihang Beidou Application Research Institute of Jinhua Jinhua 321037 P. R. China Science and Technology on Micro-system Laboratory Shanghai Institute of Micro-system and Information Technology Chinese Academy of Sciences Shanghai 200051 P. R. China

In this paper, the processing method of dynamic time variables in the route planning nodethat we designed involves the field of route planning, including determining the route time and stay time, combining the floating reserved time to determine the redundancy; after the entity has visited a node, the current value is calculated Redundancy: According to the calculated redundancy value, combined with the preset redundancy threshold, the entity's route and stay time are reminded. By converting the dynamic time variable into a fixed value, the model can complete the search for the optimal path within a limited time. At the same time, the concept of reserved floating time is introduced, thereby retaining the dynamic characteristics of time, so that visitors can have sufficient time stay, and can complete the stay according to the fixed time requirements, can effectively track the stay time and make corresponding processing in the corresponding situation to ensure the stay ability. The proposed scheme has better performance.

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Phyllotaxis-inspired nanosieves with multiplexed orbital angular momentum

arXiv

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arXiv 2021年

作者： Jin, Zhongwei Janoschka, David Deng, Junhong Ge, Lin Dreher, Pascal Frank, Bettina Hu, Guangwei Ni, Jincheng Yang, Yuanjie Li, Jing Yu, Changyuan Lei, Dangyuan Li, Guixin Xiao, Shumin Mei, Shengtao Giessen, Harald zu Heringdorf, Frank Meyer Qiu, Cheng-Wei Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore117583 Singapore College of Optical and Electronic Technology China Jiliang University Hangzhou310018 China University of Duisburg–Essen Lotharstrasse 1-21 Duisburg47057 Germany Department of Materials Science and Engineering Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China Beijing Qianjunyide Technology Co. Ltd. Beijing100031 China University of Stuttgart StuttgartD-70569 Germany School of Physics University of Electronic Science and Technology of China Chengdu611731 China Key Laboratory of Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China Department of Electronic and Information Engineering Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong Hong Kong Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong Hong Kong State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Shenzhen Graduate School Harbin Institute of Technology Shenzhen518055 China

Nanophotonic platforms such as metasurfaces, achieving arbitrary phase profiles within ultrathin thickness, emerge as miniaturized, ultracompact and kaleidoscopic optical vortex generators. However, it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device, which in turn affects the device’s compactness and channel capacity. Here, inspired by phyllotaxis patterns in pine cones and sunflowers, we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve, both in free space and on a chip, where one meta-atom may contribute to many vortices simultaneously. The time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron microscopy. Our nature-inspired optical vortex generator would facilitate various vortex-related optical applications, including structured wavefront shaping, free-space and plasmonic vortices, and high-capacity information metaphotonics. Copyright © 2021, The Authors. All rights reserved.

关键词： Plasmonics

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Revealing the Intrinsic Peroxidase-Like Catalytic Mechanism of Heterogeneous Single-Atom Co-MoS2

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Nano-micro Letters 2019年第4期11卷 778-790页

作者： Ying Wang Kun Qi Shansheng Yu Guangri Jia Zhiliang Cheng Lirong Zheng Qiong Wu Qiaoliang Bao Qingqing Wang Jingxiang Zhao Xiaoqiang Cui Weitao Zheng Key Laboratory of Automobile Materials of MOE School of Materials Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012People’s Republic of China Department of Materials Science and Engineering ARC Centre of Excellence in Future Low-Energy Electronics Technologies(FLEET)Monash UniversityClaytonVIC 3800Australia Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of EducationCollege of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbin 150025People’s Republic of China Department of Bioengineering University of Pennsylvania210 South 33rd Street240 Skirkanich HallPhiladelphiaPA 19104USA Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China School of Chemistry and Chemical Engineering MOE Key Laboratory of Micro-System and Micro-Structure ManufacturingHarbin Institute of TechnologyHarbin 150001People’s Republic of China

The single-atom nanozyme is a new concept and has tremendous prospects to become a next-generation ***,few studies have been carried out to elucidate the intrinsic mechanisms for both the single atoms and the supports in single-atom ***,the heterogeneous single-atom Co-MoS2(SA Co-MoS2)is demonstrated to have excellent potential as a high-performance peroxidase *** of the well-defined structure of SA Co-MoS2,its peroxidase-like mechanism is extensively interpreted through experimental and theoretical *** to the different adsorption energies of substrates on different parts of SA Co-MoS2 in the peroxidase-like reaction,SA Co favors electron transfer mechanisms,while MoS2 relies on Fenton-like *** different catalytic pathways provide an intrinsic understanding of the remarkable performance of SA *** present study not only develops a new kind of single-atom catalyst(SAC)as an elegant platform for understanding the enzyme-like activities of heterogeneous nanomaterials but also facilitates the novel application of SACs in biocatalysis.

关键词： Biocatalysis Nanozymes Peroxidase mimic Reaction mechanisms Single-atom catalysts

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Lattice dynamics of the topological Dirac semimetal LaAgSb2 with charge density wave ordering

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Physical Review B 2020年第20期102卷 205103-205103页

作者： Ratnadwip Singha Sudeshna Samanta Tara Shankar Bhattacharya Swastika Chatterjee Shubhankar Roy Lin Wang Achintya Singha Prabhat Mandal Saha Institute of Nuclear Physics HBNI 1/AF Bidhannagar Kolkata 700 064 India Center for High Pressure Science and Technology Advanced Research Shanghai 201 203 China Micro-Nano System Center School of Information Science and Technology Fudan University Shanghai 200 433 China Department of Physics Bose Institute 93/1 Acharya Prafulla Chandra Road Kolkata 700 009 India Department of Earth Sciences Indian Institute of Science Education and Research Kolkata 741 246 India Vidyasagar Metropolitan College 39 Sankar Ghosh Lane Kolkata 700 006 India Center for High Pressure Science (CHiPS) State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao Hebei 066 004 China

LaAgSb2 is a rare material that offers the opportunity to investigate the complex interplay between charge density wave (CDW) ordering and topology-protected electronic band structure. As both of these phenomena are governed by the structural symmetries, a comprehensive study of the lattice dynamics is highly desirable. In this paper, we present the results of temperature- and pressure-dependent Raman spectroscopy and x-ray diffraction in single crystalline LaAgSb2. Our results confirm that Raman spectroscopy is a highly sensitive tool to probe the CDW-ordering phenomenon, particularly the low-temperature second CDW transition in LaAgSb2, which appears as a very weak anomaly in most experiments. The crystal-orientation-dependent measurements provide the evolution of Raman modes with crystallographic symmetries and can be further studied through group symmetry analysis. The low-temperature x-ray diffraction data show the emergence of structural modulations corresponding to the CDW instability. The combined high-pressure Raman spectroscopy and synchrotron x-ray diffraction reveal multiple structural phase transitions through lowering of crystalline symmetries, which are also expected to lead to electronic topological transitions.

关键词： Charge density waves Lattice dynamics Phonons Pressure effects Topological phases of matter Density functional theory Raman spectroscopy X-ray diffraction

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Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie 2025年

作者： Dr. Yi Fan Dr. Yigang Shen Wenli Zhang Guochao Zeng Tete Liu Yilan Wang Dr. Shuli Wang Prof. Jing Zheng Prof. Xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Gating Inspired Future Technology Co. Ltd. Xiamen 361005 China Machinery and Smart Structure Research Center for Micro-Nano Device and System College of Engineering Zhejiang Normal University Jinhua 321004 China Fujian Engineering Research Center for Solid-State Lighting Department of Electronic Science School of Electronic Science and Engineering Xiamen University Xiamen 361005 China Institute of Artificial Intelligence Xiamen University Xiamen 361005 China Institute of Electrochemical Science and Engineering Xiamen University Xiamen 361005 China Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials Research College of Physical Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen 361005 China

The critical challenge in advancing liquid metal circuits (LMCs) lies in achieving interfacial compatibility with diverse substrates while dynamically balancing fabrication efficiency and quality to ensure robust conductive stability. Here we introduce an electrochemical redox synergistic liquid metal (E- rs LM) that enables the controllable generation of diverse intermetallic bond transition layers (Cu, Au, or Fe-based) between liquid metal and unrestricted substrate surfaces, applicable in pH-universal electrolytes. It involves enhanced locomotion of the liquid metal, driven by synergistic electrochemical energy transduction from cyclic changes in gallium redox states. Characterized by expansion-contraction-expansion, it enables unique self-propelled bouncing, tuning spreading speed (up to ~26.8 mm/s) and elongation rate (up to 1192 %) with a volume of only 80 μL. Additionally, we demonstrate the adaptability of E- rs LM fabrication across 30 different substrates, highlighting its versatility. The patterning displays the superimposed efficiency and self-indicated quality, leading to superior conductivity (with time-cost savings of 30.7 % and 13.4 % in heating-cooling cycles, and a nearly 90 % reduction in output resistance). The practical viability of these circuits is further showcased by the assembly of integrated circuits, marking a significant step in expanding LMCs applications beyond laboratory-scale prototypes.

关键词： Electrochemistry Redox reaction Liquid metal Patterning Liquid metal circuits

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Author Correction: Super-resolution multicolor fluorescence microscopy enabled by an apochromatic super-oscillatory lens with extended depth-of-focus

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Nature communications 2024年第1期15卷 1510页

作者： Wenli Li Pei He Dangyuan Lei Yulong Fan Yangtao Du Bo Gao Zhiqin Chu Longqiu Li Kaipeng Liu Chengxu An Weizheng Yuan Yiting Yu Ningbo Institute of Northwestern Polytechnical University College of Mechanical Engineering Northwestern Polytechnical University Xi'an 710072 China. Key Laboratory of Micro/Nano Systems for Aerospace (Ministry of Education) Northwestern Polytechnical University Xi'an 710072 China. Shaanxi Province Key Laboratory of Micro and Nano Electro-Mechanical Systems Northwestern Polytechnical University Xi'an 710072 China. Department of Materials Science and Engineering City University of Hong Kong Hong Kong 999077 China. dangylei@cityu.edu.hk. Department of Materials Science and Engineering City University of Hong Kong Hong Kong 999077 China. The Institute of AI and Robotics Fudan University Shanghai 200433 China. Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi'an 710119 China. Department of Electrical and Electronic Engineering Joint Appointment with School of Biomedical Sciences The University of Hong Kong Hong Kong 999077 China. State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang 150001 China. Ningbo Institute of Northwestern Polytechnical University College of Mechanical Engineering Northwestern Polytechnical University Xi'an 710072 China. yyt@***. Key Laboratory of Micro/Nano Systems for Aerospace (Ministry of Education) Northwestern Polytechnical University Xi'an 710072 China. yyt@***. Shaanxi Province Key Laboratory of Micro and Nano Electro-Mechanical Systems Northwestern Polytechnical University Xi'an 710072 China. yyt@***.

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Frontispiz: Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie 2025年第17期137卷

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Frontispiece: Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie International Edition 2025年第17期64卷

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Fabrication of highly reliable joint based on Cu/Ni/Sn double-layer powder for high temperature application

Fabrication of highly reliable joint based on Cu/Ni/Sn doubl...

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作者： Xu, Hongyan Shen, Yaochun Hu, Yihua Li, Jianqiang Xu, Ju Beijing Engineering Laboratory of Electrical Drive System and Power Electronic Device Packaging Technology Micro-Nano Fabrication Technology Department Institute of Electronic Engineering Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China School of Electrical Engineering Electronics and Computer Science University of Liverpool Brownlow Hill LiverpoolL69 3GJ United Kingdom State Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

A highly reliable three-dimensional network structure joint was fabricated based on Cu/Ni/Sn powder with double-layer coatings and transient liquid phase bonding (TLPB) technology for high temperature application. The Cu/Ni/Sn joint is characterized by Cu metal particles embedded in the matrix of (Cu,Ni)6Sn5/Ni3Sn4 intermetallic compounds (IMCs), with a low void ratio, and can be reflowed at low temperatures (6Sn5/ Ni3Sn4 IMCs, and the Cu/Ni/Sn joint had a lower void ratio and a higher shear strength than those of Cu/Sn. The mechanism of the Ni-coating layer inhibiting phase transformation was studied. The high reliable three-dimensional network structure joint based on Cu/Ni/Sn double-layer powder was fabricated for high temperature application. Copyright © International microelectronics Assembly and Packaging Society

关键词： High temperature applications

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Fabrication of highly reliable jointbased on Cu@Ni@Sn double-layerpowderfor high temperature application

Fabrication of highly reliable jointbased on Cu@Ni@Sn double...

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作者： Xu, Hongyan Shen, Yaochun Hu, Yihua Li, Jianqiang Xu, Ju Beijing Engineering Laboratory of Electrical Drive System & Power Electronic Device Packaging Technology Micro-nano fabrication technology department Institute of Electronic Engineering Chinese Academy of Sciences Beijing 100190 China School of Electrical Engineering Electronics andComputer Science University of Liverpool LiverpoolL69 3GJ United Kingdom State Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

A highly reliable three-dimensional networkstructure jointwas fabricatedbased on Cu@Ni@Sn core-shell powderand transient liquid phase bonding (TLPB) technologyfor high temperature application. Cu@Ni@Sn joint is characterized by Cu metal particles embedded in the matrix of (Cu,Ni)6Sn5/Ni3Sn4intermetallics (IMCs), low level of voiding is achieved, they can be reflowed at a low temperatures( © 2019 IMAPS-International microelectronics and Packaging Society. All rights reserved.

关键词： High temperature applications

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