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arXiv 2021年

作者： Zhang, Zhe Li, Kuo Lin, Shangchao Song, Ruiqi Yu, Dehong Wang, Yida Wang, Jingfan Kawaguchi, Shogo Zhang, Zhao Yu, Chenyang Li, Xiaodong Chen, Jie He, Lunhua Mole, Richard Yuan, Bao Ren, Qingyong Qian, Kun Cai, Zhuangli Yu, Jingui Wang, Mingchao Zhao, Changying Tong, Xin Zhang, Zhidong Li, Bing Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Liaoning Shenyang110016 China School of Materials Science and Engineering University of Science and Technology of China 72 Wenhua Road Liaoning Shenyang110016 China Center for High Pressure Science and Technology Advanced Research Beijing China Key Laboratory for Power Machinery and Engineering of Ministry of Education Institute of Engineering Thermophysics School of Mechanical and Power Engineering Shanghai Jiao Tong University Shanghai200240 China Australian Nuclear Science and Technology Organisation Locked Bag 2001 DC KirraweeNSW2232 Australia Department of Mechanical Engineering Florida State University TallahasseeFL32310 United States Japan Synchrotron Radiation Research Institute SPring-8 1-1-1 Kouto Sayogun Hyogo Sayo-cho679-5198 Japan Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China Spallation Neutron Source Science Center Dongguan523803 China Songshan Lake Materials Laboratory Dongguan523808 China School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan430070 China Centre for Theoretical and Computational Molecular Science Australian Institute for Bioengineering and Nanotechnology University of Queensland St. LuciaQLD4072 Australia

Nowadays the world is facing a prominent paradox regarding thermal energy. The production of heat accounts for more than 50% of global final energy consumption1 while the waste heat potential analysis reveals that 72% of the global primary energy consumption is lost after conversion mainly in the form of heat2. Towards global decarbonization, it is of vital importance to establish a solution to thermal energy utilization under full control3-6. Here, we propose and realize an unprecedented concept - barocaloric thermal batteries based on the inverse colossal barocaloric effect of NH4SCN. Thermal charging is initialized upon pressurization through an order-to-disorder phase transition below 364 K and in turn the discharging of 43 J g-1, which are eleven times more than the input mechanical energy, occurs on demand at depressurization at lower temperatures. The discharging is also manifested as a directly measured temperature rise of 12 K. The thermodynamic equilibrium nature of the pressure-restrained heat-carrying phase guarantees stable storage and/or transport over a variety of temporal and/or spatial scales. The barocaloric thermal batteries reinforced by their solid microscopic mechanism are expected to significantly advance the ability to take advantage of waste heat. Copyright © 2021, The Authors. All rights reserved.

关键词： Waste heat

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Mechanism of friction-induced chemical reaction high-efficient polishing single crystal 4H-SiC wafer using pure iron

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Tribology International 2024年 193卷

作者： Wu, Min Huang, Hui Wu, Yueqin Xu, Zhiteng Li, Tukun Macleod, Iain Wu, Xiaolei National and Local Joint Engineering Research Center for Intelligent Manufacturing Technology of Brittle Material Products Huaqiao University Xiamen 361021 China Institute of Manufacturing Engineering Huaqiao University Xiamen 361021 China State Key Laboratory of High-Performance Tools Zhengzhou 450001 China EPSRC Future Advanced Metrology Hub Centre for Precision Technologies School of Computing and Engineering University of Huddersfield Huddersfield HD1 3DH United Kingdom IMA Ltd 29 Clay Lane Cheshire WA15 8PJ United Kingdom Zhengzhou Research Institute for Abrasives & Grinding Co. Ltd Zhengzhou 450001 China

This paper proposes a novel method for friction-induced chemical reaction machining of single-crystal 4H-SiC wafers using pure iron. Material Removal Rate (MRR) and surface quality of single-crystal 4H-SiC were studied, and the results demonstrate that both high surface quality and high MRR (Ra: 2.2 nm, MRR: 375 nm/min) were obtained. The mechanism of material removal during friction was investigated by examining the critical roles of friction speed. Solid-state chemical reactions between metal and SiC surfaces can be induced by friction, and the subsequent removal of reactants, resulting in a near-damage-free machined surface. A removal mechanism model of friction was established, which reveals that both the rates of solid-state reaction and reactant removal significantly impact the final removal rate of friction. © 2024 Elsevier Ltd

关键词： Friction-induced chemical reaction Pure iron Removal mechanism SiC

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Inside Cover Picture: Plasma Process. Polym. 4/2020

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Plasma Processes and Polymers 2020年第4期17卷

作者： Mengwen He Jiangwei Duan Jialu Xu Mingyu Ma Bao Chai Guangyuan He Lu Gan Song Zhang Xiaoru Duan Xinpei Lu Hongxiang Chen Department of Dermatology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Department of Dermatology Nanshan Distinct People's Hospital Affiliated to Shenzhen University Shenzhen China The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education the Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology College of Life Science and Technology Huazhong University of Science and Technology Wuhan China IFSA Collaborative Innovation Center Shanghai Jiao Tong University Shanghai China

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Outside Front Cover: Plasma Process. Polym. 1/2023

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Plasma Processes and Polymers 2023年第1期20卷

作者： Bingkai Wang Huaiji Wang Yuqi Wang Yuhan Li Xiang Mao Zilan Xiong State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan Hubei People's Republic of China Institute of Environmental Health Wuhan Center for Disease Control and Prevention Wuhan People's Republic of China Xiang Mao Institute of Environmental Health Wuhan Center for Disease Control and Prevention Wuhan 430024 People's Republic of China.

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Front Cover: Tailoring Electrolyte Distributions to Enable High-performance Li3PS4-based All-solid-state Batteries under Different Operating Temperatures (Chem. Asian J. 12/2023)

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Chemistry – An Asian Journal 2023年第12期18卷

作者： Chaochao Wei Dian Yu Xiangling Xu Ru Wang Jiayang Li Jinyan Lin Shaoqing Chen Prof. Long Zhang Prof. Chuang Yu School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen 518055 Guangdong P. R. China College of Physics and Energy Fujian Normal University Fuzhou 350117 P. R. China

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Facile Access to Far-Red Fluorescent Probes with Through-Space Charge-Transfer Effects for In Vivo Two-Photon Microscopy of the Mouse Cerebrovascular System

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Angewandte Chemie 2022年第41期134卷

作者： Yingjuan Hong Weihang Geng Prof. Tian Zhang Guangshuai Gong Chongyang Li Canze Zheng Feng Liu Prof. Jun Qian Prof. Ming Chen Prof. Ben Zhong Tang College of Chemistry and Materials Science Jinan University Guangzhou 510632 China State Key Laboratory of Modern Optical Instrumentations Centre for Optical and Electromagnetic Research College of Optical Science and Engineering International Research Center for Advanced Photonics Zhejiang University Hangzhou 310058 China School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255049 China School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong Shenzhen Guangdong 518172 China

Much effort has been devoted to the generation of fluorescent probes by synthetic approaches. In this study, we developed a facile strategy to construct far-red fluorescent probes based on through-space charge transfer within complexes of acceptors and donors and their “twist+twist” interactions. Owing to their rare two-photon excitation property, the complexes could be used for in vivo imaging of the mouse cerebrovascular system.

关键词： Bioimaging Fluorescent Probes Through-Space Charge Transfer Twist-Plus-Twist Interaction Two-Photon Excitation

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Corrigendum to "Self-Compassion Demonstrating a Dual Relationship with Pain Dependent on High-Frequency Heart Rate Variability"

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Pain research & management 2021年第1期2021卷 6596375页

作者： Shuxiang Tian Xi Luo Xianwei Che Guizhi Xu State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin China. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province School of Electrical Engineering Hebei University of Technology 8 Guangrong RoadHongqiao District Tianjin 300130 China. College of Preschool and Primary Education China West Normal University Nanchong China. Center for Cognition and Brain Disorders Institutes of Psychological Sciences Hangzhou Normal University Hangzhou China. Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments Hangzhou China.

[This corrects the article DOI: 10.1155/2020/3126036.].

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Cover Feature: Modular Polyoxometalate–Layered Double Hydroxides as Efficient Heterogeneous Sulfoxidation and Epoxidation Catalysts (ChemCatChem 1/2018)

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ChemCatChem 2018年第1期10卷 4-4页

作者： Tengfei Li Wei Zhang Wei Chen Dr. Haralampos N. Miras Prof. Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 P.R. China WestCHEM School of Chemistry University of Glasgow Glasgow G12 8QQ UK Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing P.R. China

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Digital Control of Multistep Hydrothermal Synthesis by Using 3D Printed Reactionware for the Synthesis of Metal–Organic Frameworks

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Angewandte Chemie 2018年第51期130卷

作者： Chang‐Gen Lin Wei Zhou Xue‐Ting Xiong Weimin Xuan Philip J. Kitson De‐Liang Long Wei Chen Yu‐Fei Song Leroy Cronin Beijing Advanced Innovation Centre for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 P. R. China School of Chemistry The University of Glasgow Glasgow G12 8QQ UK State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 P. R. China

Hydrothermal‐synthesis‐based reactions are normally single step owing to the difficulty of manipulating reaction mixtures at high temperatures and pressures. Herein we demonstrate a simple, cheap, and modular approach to the design reactors consisting of partitioned chambers, to achieve multi‐step synthesis under hydrothermal conditions, in digitally defined reactionware produced by 3D printing. This approach increases the number of steps that can be performed sequentially and allows an increase in the options available for the control of hydrothermal reactions. The synthetic outcomes of the multi‐stage reactions can be explored by varying reaction compositions, number of reagents, reaction steps, and reaction times, and these can be tagged to the digital blueprint. To demonstrate the potential of this approach a series of polyoxometalate (POM)‐containing metal–organic frameworks (MOFs) unavailable by “one‐pot” methods were prepared as well as a set of new MOFs.

关键词： 3D-Druck Hydrothermalsynthesen Mehrstufige Reaktionen Metall-organische Gerüste Polyoxometallate

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The Impact of Primary Frequency Control of WTs on Ultra-Low Frequency Oscillation

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Journal of Physics: Conference Series 2021年第4期1748卷

作者： Lei Yang Xiaojie Zhang Wei Huang Chen Wu Shengnan Li Yixuan Chen Hongkai Kang Yunnan Electric Power Research Institute Kunming Yunnan 650217 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China Power Dispatching Center of Yunnan Electric Power Group Co. Ltd Kunming Yunnan 650217 China Power Planning Research Center of Yunnan Power Grid Co. Ltd Kunming Yunnan 650217 China

Since entering the 21st century, as wind power develops rapidly, wind power plays an increasingly important role in the safe and stable operation of power systems. Since the wind turbines under traditional control don't provide frequency support, the frequency dynamics of the power grids after load disturbance will be deteriorated. Thus, wind farms are required to equip primary frequency control in many countries. Most existing researches on primary frequency control of wind turbines focus on control strategies and the impact on system frequency, but few studies pay attention to the impact of primary frequency control of wind power on ultra-low frequency oscillation. This paper first proposes an analysis framework for ultra-low frequency oscillations in power systems with wind power. On this basis, a motion equation model of wind turbines is established. Finally, an extended three-machine nine-node system is used as an example to analyze the impact mechanism of primary frequency control on ultra-low frequency oscillation. The impact mechanism provides reference for the design of primary frequency of wind turbines in some regional power grids with ultra-low frequency oscillation.

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