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SSRN 2024年

作者： Zhao, Xinhui Kuang, Cheng An, Chaopeng Wang, Mingyan Jiangsu Key Laboratory of Function Control Technology for Advanced Materials School of Environmental and Chemical Engineering Jiangsu Ocean University Lianyungang Jiangsu222005 China

Upcycling plastic waste into value-added chemicals is an innovative strategy that addresses environmental concerns and creates economic value. As one of the polyesters that is widely used, polyethylene terephthalate (PET) plastic waste is employed as the model substrate. Here we report a chloride corrosion method to synthesize bimetallic hydroxide catalysts on nickel foam. By using a nickel-cobalt hydroxide catalyst (NiCo-OH/NF), we demonstrate an electrocatalytic oxidation strategy to transform real-world polyethylene terephthalate (PET) water bottle into potassium formate and terephthalic acid (TPA) with high Faraday efficiency of 92.1% at 1.40 V vs. RHE. The in situ spectroscopy and theoretical calculations provide insights into the catalytic mechanism especially active sites, pivotal intermediates, and favorable pathways. This work highlights the significant potential of electrochemical conversion as a means of achieving PET upcycling. © 2024, The Authors. All rights reserved.

关键词： Polyethylene terephthalates

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Overview of runaway current suppression and dissipation on J-TEXT tokamak

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Plasma Science and technology 2022年第12期24卷 115-125页

作者： Zhongyong CHEN Zhifang LIN Wei YAN Duwei HUANG Yunong WEI You LI Nianheng CAI Jie HU Yonghua DING Yunfeng LIANG Zhonghe JIANG J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China School of Electrical Engineering&Automation Jiangsu Normal UniversityXuzhou 221116People's Republic of China

The main works on disruption mitigation including suppression and mitigation of runaway current on the J-TEXT tokamak are summarized in this *** strategies for the mitigation of runaway electron(RE) beams are applied in *** first strategy enables the REs to be completely suppressed by means of supersonic molecular beam injection and resonant magnetic perturbation which can enhance RE loss,magnetic energy transfer which can reduce the electric field,and secondary massive gas injection(MGI) which can increase the collisional *** the second strategy,the runaway current is allowed to form but should be dissipated or soft landed within *** is observed that the runaway current can be significantly dissipated by MGI,and the dissipation rate increases with the injected impurity particle number and eventually stabilizes at 28 MA s^(-1).The dissipation rate of the runaway current can be up to 3 MA s^(-1)by ohmic *** pellet injection has been chosen as the main disruption mitigation method,which has the capability of injecting material deeper into the plasma for higher density assimilation when compared to ***,simulation works show that the RE seeds in the plasma are strongly influenced under different phases and sizes of 2/1 mode locked islands during thermal *** robust runaway suppression and runaway current dissipation provide an important insight on the disruption mitigation for future large tokamaks.

关键词： tokamak disruption mitigation runaway electron runaway current

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Centimeter-Scale Submarine Robot for Monitoring Coral Reef Ecosystem

Centimeter-Scale Submarine Robot for Monitoring Coral Reef E...

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IEEE International Conference on Mechatronics and Automation

作者： Zongze Li Yi Zhang Shujing He Xiyu Zhu Tanyong Wei Chengzhi Hu Key Laboratory of Biomimetic Robotics and Intelligent Systems Southern University of Science and Technology Shenzhen China Guangdong Provincial Key Laboratory of Advanced Biomaterials Southern University of Science and Technology Shenzhen China

ISBN: (数字)9798350388077

ISBN: (纸本)9798350388084

Monitoring coral reef ecosystem is of great importance for assessing their health and promoting conservation efforts to protect these valuable and vulnerable ecosystems. Underwater robots provide a feasible approach for long-term monitoring due to their compact size for navigating through narrow passages. However, existing underwater robots face limitations due to their large size, preventing them from entering narrow coral reef caves to gather information. To address this challenge, this paper proposes a highly integrated propeller- driven centimeter-scale submarine robot with a length of 4.4 cm for monitoring coral reef ecosystem. There are two propellers on two sides of the robot, facilitating lift motion, while an additional two propellers are mounted at the tail to enable forward propulsion and turning maneuvers. This robot can realize three degrees of freedom movement, such as circular motion at specific heights or cruising in a spiral paths under the control of external infrared signals. A kinematic and dynamic model is formulated to develop the control strategy. For object monitoring by the proposed submarine robot, distance and displacement measurement algorithms are developed based on a monocular camera. These algorithms have been experimentally evaluated, demonstrating a calculation error of less than 5%.

关键词： Spirals Propellers Heuristic algorithms Ecosystems Robot vision systems Marine vegetation Propulsion

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Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Xue-Qian Wang Feng-Qi Zhang Xiao-Ya Cui Bing-Bing Fan Jia-Ming Guo Zhi-Min Guo Rui Huang Wen Huang Xu-Bo Li Meng-Ru Li Yan Ma Zhi-Hua Shen Yong-Gang Sun De-Zhuang Wang Fei-Yang Wang Li-Qiang Wang Nan Wang Tian-Li Wang Wei Wang Xiao-Yang Wang Yi-Han Wang Fu-Jie Yu Yu-Zhen Yin Ling-Kun Zhang Yi Zhang Jian-Yang Zhang Qi Zhao Yu-Ping Zhao Xin-Dong Zhu Yasir Sohail Ya-Nan Chen Tao Feng Qi-Long Gao Hai-Yan He Yong-Jiang Huang Zeng-Bao Jiao Hua Ji Yao Jiang Qiang Li Xiao-Ming Li Wei-Bing Liao Huai-Jun Lin Hui Liu Qi Liu Qing-Feng Liu Wei-Di Liu Xiong-Jun Liu Yang Lu Yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan Qing Wang Hong-Hui Wu Yuan Wu Tao Yang Wei-Ming Yang Qian Yu Jin-Yu Zhang Zhi-Gang Chen Liang Mao Yang Ren Bao-Long Shen Xun-Li Wang Zhe Jia He Zhu Zhen-Duo Wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(HEAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of HEAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring HEAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

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Orientation-dependent ductility and deformation mechanisms in body-centered cubic molybdenum nanocrystals

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Journal of Materials Science & technology 2023年第23期154卷 107-113页

作者： Huayu Peng Yuxuan Hou He Zheng Ligong Zhao Ying Zhang Weiwei Meng Ting Liu Peili Zhao Shuangfeng Jia Jianbo Wang School of Physics and Technology Center for Electron Microscopy MOE Key Laboratory of Artificial Micro- and Nano-structures and Institute for Advanced Studies Wuhan University Wuhan 430072 China Suzhou Institute of Wuhan University Suzhou Jiangsu 215123 China Wuhan University Shenzhen Research Institute Shenzhen Guangdong 518057 China Core Facility of Wuhan University Wuhan 430072 China

The knowledge regarding anisotropic mechanical behaviors in nanoscale body-centered cubic (bcc) metals remains obscure. Herein, we report the orientation-dependent ductility in bcc Mo nanocrystals (NCs), which exhibit poor ductility along [110] direction but possess relatively better ductility along the [001] and [112] orientations. The origin of different deformability can be traced down to the distinct deformation mechanisms: the unexpected crack nucleation and propagation induce premature fractures in [110]-oriented NCs;in contrast, deformation twinning could contribute to the enhanced ductility in [001]-oriented NCs;interestingly, we find the activation of multiple dislocation slips in [112]-oriented NCs with the highest ductility. Further molecular dynamics simulations provide deeper insights into the defect dynamics that are closely interlinked with experimental observations. Our findings advance the basic understanding of orientation-dependent mechanical properties and help to guide endeavors to architecture the microstructures of bcc metals with enhanced ductility.

关键词： In-situ tension test Ductility Crack Deformation twinning Dislocation slips Mo nanocrystals

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The construction of aggregation-induced charge transfer emission systems in aqueous solution directed by supramolecular strategy

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Chinese Chemical Letters 2022年第4期33卷 1975-1978页

作者： Weirui Qian Minzan Zuo Pengbo Niu Xiao-Yu Hu Leyong Wang Key Laboratory of Mesoscopic Chemistry of MOE Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China Department of Chemistry Xihua UniversityChengdu 610039China

Novel aggregation-induced charge transfer(CT) emission systems with long luminescence lifetime directed by supramolecular strategy have been successfully developed in water. The dimethylacridine-based electron donor(Br Ac) with excellent aggregation ability can co-aggregate with a triazine-based electron acceptor(TRZ) to form nanorods in water, which exhibit CT emission with long lifetime(τ = 0.92 μs).As for a similar electron donor(Qa Ac) with poor aggregation ability, water-soluble pillar[5]arene(WP5)can be introduced to promote the aggregation process, leading to the obvious CT emission with long lifetime(τ = 0.61 μs). In addition, structural modification of the acceptor with substituent groups possessing stronger electron-accepting capabilities will cause red-shift(about 50 nm) of the emission, which allows conveniently constructing long lifetime organic luminescent materials with different emission colors.

关键词： Aggregation-induced charge transfer emission Supramolecular strategy Long luminescence lifetime Self-assemble Co-aggregate

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Research on Automatic Marking Method of 3D Model Based on Geometric Feature Similarity

Research on Automatic Marking Method of 3D Model Based on Ge...

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International Conference on Mechanical Design, ICMD 2021

作者： Wang, Shu-Chun Xu, Jing-Ying Wang, Li-Na Fang, Xi-Feng Sun, Hao-Ran School of Mechanical Engineering Jiangsu University of Science and Technology Zhenjiang212100 China Jiangsu Key Laboratory of Advanced Manufacturing Technology Huaian223003 China School of Environment and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang212100 China

ISBN: (纸本)9789811673801

Model Based Definition (MBD) models are widely used in various manufacturing processes. The traditional automatic labeling methods still need to use pre-indexing and other preprocessing, which will reduce the efficiency and effect of labeling. Aiming at this problem, an automatic annotation method for 3D models based on similar geometric features is proposed. The Freeman chain code is used to describe the geometric shape and the contour information of the front line as the basis for geometric shape matching. The longest common subsequence is used to search and match the geometric features to determine the label object. A labeling and detection method based on case clustering is proposed, which uses case structure and information for labeling constraints and completeness detection. This paper starts from the case of car front hook cover, compares the matching results of geometric features, which turn out to be correct. The feature comparison results are very different, and the efficiency is high. Compared with traditional automatic labeling methods, the labeling time is shortened, the accuracy rate is high, and the efficiency is increased by 40%. The experimental structure shows that the method is feasible and effective, and has strong versatility, and can realize efficient automatic labeling in a short time. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Clustering algorithms

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POMDP-Based Real-Time Path Planning for Manipulation of Multiple Microparticles via Optoelectronic Tweezers

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Cyborg and Bionic Systems 2022年第1期2022卷 303-313页

作者： Jiaxin Liu Huaping Wang Menghua Liu Ran Zhao Yanfeng Zhao Tao Sun Qing Shi Intelligent Robotics Institute School of Mechatronical Engineering Bejing Institute of TechnologyBeijing 10081China Key Laboratory of Biomimetic Robots and Systems(Beijing Institute of Technology) Ministry of EducationBeijing 100081China School of Medical Technology Beijing Institute of TechnologyBeijing 100081China Bejing Advanced Innovation Center for Itelligent Robots and Systems Beijing Institute of TechnologyBeijing 100081China

With high throughput and high flexibility,optoelectronic tweerers(OETs)hold huge potential for massively parallel ***,the trajectory of the virtual electrode has been planned in advance in most synchronous manipulations for multiple targets based on an optically induced dielectrophoresis(ODEP)mechanism,which is insuficient to ensure the stability and eficiency in an environment with potential collision *** this paper,a synchronously discretized manipulation method based on a centralized and decoupled path planner is proposed for transporting microparticles of diferent types with an OET *** approach based on the K uhn-Munkres algorithm is utilized to achieve the goal assignment between target microparticles and goal *** the assistance of a visual feedback module,a path planning approach based on the POMDP algorithm dynamically determines the motion strategies of the particle movement to avoid potential *** geometrical parameters of the virtual electrodes are optimized for different types of particles with the goal of maximum transport *** experiments of micropatterning with different morphologies and transporting multiple micropartides(e.g,polystyrene microspheres and 3T3 cells)to goal positions are *** results demonstrate that the proposed manipulation method based on optoelectronic tweezers is effective for multicell transport and promises to be used in biomedical manipulation tasks with high flexibility and efficiency.

关键词： manipulation positions assignment

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GelPixel: A Single-Pixel-Based Tactile Sensor

GelPixel: A Single-Pixel-Based Tactile Sensor

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2023 IEEE International Conference on Real-Time Computing and robotics, RCAR 2023

作者： Huang, Binhua Li, Xiaoyu Sumari, Putra Ye, Chaoxiang Zhou, Zhenning Yin, Meng Yi, Zhengkun Wu, Xinyu Shenzhen Institute of Artificial Intelligence and Robotics for Society Siat Branch Shenzhen518055 China Universiti Sains Malaysia School of Computer Science 11800 Malaysia Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Shenzhen518055 China

ISBN: (纸本)9798350327182

In this paper, we present the design and development of a novel optical tactile sensor that uses a single-pixel color light-to-frequency converter (TCS3200) and spectral decoding to recognize presses at different positions. This innovative approach overcomes the limitations associated with camera-based sensors, such as increased manufacturing costs and shape restrictions, enabling potential integration as a skin-like layer over a robot's body. Our proposed direct light propagation structure demonstrates enhanced sensitivity and a broader measuring range compared to traditional reflection structures. Using Ecoflex as the elastomer, the sensor's design incorporates a three-layer structure, including an LED layer, an elastomer layer, and a color sensor layer. Experimental results demonstrate that the proposed sensor performs well in localization tasks, achieving over 95% accuracy using multi-target regression for rendering poked positions. This study demonstrates the potential of single-pixel-based tactile sensors in various applications and provides a foundation for further exploration in this area. © 2023 IEEE.

关键词： Tactile sensors

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CO electroreduction:What can we learn from its parent reaction,CO_(2) electroreduction?

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eScience 2023年第6期3卷 1-8页

作者： Xue Ding Jie Zhang Yanguang Li Institute of Functional Nano and Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China Jiangsu Key Laboratory for Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyMacao999078China

The CO electroreduction reaction(CORR)represents an important piece of the decarbonization puzzle and is heavily inspired by research on the CO_(2) electroreduction reaction(CO_(2)RR).Compared to its parent reaction,CORR circumvents the(bi)carbonate issue that plagues CO_(2)RR,potentially enabling greater stability and selectivity toward C2þproducts,particularly *** its unique potential,CORR still suffers from unsatisfactory *** this perspective article,we aim to provide a concise and informative overview of CORR and its close connection with CO_(2)*** start by briefly presenting the two reactions’similarities and differences,then discussing several catalyst design *** is followed by highlights of the latest results on device integration and ***,we offer our thoughts about possible future research opportunities that could render this technology a practical reality.

关键词： CO electroreduction CO_(2)electroreduction Catalysts Devices

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