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4D-printed novel zero Poisson's ratio honeycombs based on thermoplastic polymers: Thermo-mechanical experiments and modeling

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Thin-Walled Structures 2025年 215卷

作者： Zhang, Boyu Gu, Jianping Pan, Wencheng Huang, Jian Sun, Huiyu State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics Nanjing China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology School of Materials Science and Engineering Nanjing Institute of Technology Nanjing China Nanjing Fiberglass Research and Design Institute Co. Ltd. Nanjing China

In this study, a novel zero Poisson's ratio (ZPR) honeycomb is proposed by reconfiguring the inclined and vertical walls of re-entrant structure. A theoretical model based on energy theorems for the honeycomb is established to analyze the in-plane mechanical properties. By analyzing the process parameters related to 4D printing, the accuracy correction coefficient related to the nozzle diameter is proposed. The modified theoretical model can better predict the in-plane mechanical properties of the structure under small deformation. Based on the model, the dimensional parameter analysis of the structure is carried out. It is shown that there is a great range to adjust the mechanical properties of the honeycombs. At the same time, compared with the conventional ZPR honeycombs, the structure can improve the in-plane shear modulus without sacrificing the deformation capacity. In addition, 4D printing technology enables structures to be programmed to adjust its mechanical properties by controlling the temperature, and also has the ability to return to its original shape autonomously after thermal stimulation. Moreover, the thermo-mechanical and smart responses of the honeycomb are investigated by experiments and finite element analysis. Finally, the stability of the structure is proved by multiple shape memory cycle tests. The study of the 4D-printed ZPR honeycomb in this paper provides foundation for the application in various engineering areas such as self-deployable structures, soft robots, and flexible electronics. © 2025 Elsevier Ltd

关键词： Honeycomb structures

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Quantum oscillations and quasilinear magnetoresistance in the topological semimetal candidate ScSn2

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Physical Review B 2021年第16期104卷 165128-165128页

作者： Y. Chen F. Tang W. Z. Meng X. Shen W. Zhao X. Q. Yin S. Cong Q. H. Yi L. Zhang D. J. Wu Z.-D. Han B. Qian X.-F. Jiang X. M. Zhang Y. Fang Jiangsu Laboratory of Advanced Functional Materials Department of Physics Changshu Institute of Technology Changshu 215500 China Jiangsu Key Laboratory of Thin Films School of Physical Science and Technology Soochow University Suzhou 215006 China School of Materials Science and Engineering Hebei University of Technology Tianjin 300130 China ISEM Innovation Campus University of Wollongong Wollongong New South Wales 2500 Australia Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade Taipa Macau SAR 999078 China Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) Shenyang National Laboratory for Materials Science School of Physics and Astronomy and Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 200240 China

Novel compounds with two-dimensional square lattices formed by group IV or V elements (Si, Sn, Ge, Bi, and Sb) have been attracting a great deal of attention in recent times, mainly because of the possible emergence of various topological phases therein. Here, we successfully grow the single crystals of Sn-square-net based material ScSn2, and systematically perform their magnetization and magnetotransport measurements. Clear quantum oscillations emerge in the magnetization isotherms along different field orientations, from which nonzero Berry phases are extracted, implying that ScSn2 harbors three-dimensional Fermi surfaces and nontrivial electronic states. Similar to many other topological semimetals with extremely large magnetoresistance, ScSn2 shows field-induced resistivity enhancement as well, which has been proven to be not of a gap opening origin. Besides, at low temperature, large magnetoresistance with a quasilinear field dependence is observed. Our analysis of the magnetotransport data finds that the quasilinear magnetoresistance in ScSn2 cannot be understood by several familiar mechanisms proposed in the literature. These findings are expected to have far reaching implications for both the fundamental understanding and magnetoresistance device application of topological semimetal materials.

关键词： Magnetotransport Topological materials Weyl semimetal

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Static and dynamical properties of the spin-52 nearly ideal triangular lattice antiferromagnet Ba3MnSb2O9

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Physical Review B 2023年第17期108卷 174424-174424页

作者： Mingfang Shu Weicen Dong Jinlong Jiao Jiangtao Wu Gaoting Lin Yoshitomo Kamiya Tao Hong Huibo Cao Masaaki Matsuda Wei Tian Songxue Chi G. Ehlers Zhongwen Ouyang Hongwei Chen Youming Zou Zhe Qu Qing Huang Haidong Zhou Jie Ma Key Laboratory of Artificial Structures and Quantum Control School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 Jiangsu China Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan 430074 People's Republic of China Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory Hefei Institutes of Physical Sciences Chinese Academy of Sciences Hefei Anhui 230031 China College of Materials Science and Chemistry China Jiliang University Hangzhou 310018 China Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA

We study the ground state and spin excitations in Ba3MnSb2O9, an easy-plane S=5/2 triangular lattice antiferromagnet. By combining single-crystal neutron scattering, electric spin resonance (ESR), and spin wave calculations, we determine the frustrated quasi-two-dimensional spin Hamiltonian parameters describing the material. While the material has a slight monoclinic structural distortion, which could allow for isosceles-triangular exchanges and biaxial anisotropy by symmetry, we observe no deviation from the behavior expected for spin waves in the in-plane 120∘ state. Even the easy-plane anisotropy is so small that it can only be detected by ESR in our study. In conjunction with the quasitwo dimensionality, our study establishes that Ba3MnSb2O9 is a nearly ideal triangular lattice antiferromagnet with the quasiclassical spin S=5/2, which suggests that it has the potential for an experimental study of Z- or Z2-vortex excitations.

关键词： Inelastic neutron scattering Linear spin wave theory Neutron diffraction Neutron scattering

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Insulating materials for realising carbon neutrality:Opportunities,remaining issues and challenges

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High Voltage 2022年第4期7卷 610-632页

作者： Chuanyang Li Yang Yang Guoqiang Xu Yao Zhou Mengshuo Jia Shaolong Zhong Yu Gao Chanyeop Park Qiang Liu Yalin Wang Shakeel Akram Xiaoliang Zeng Yi Li Fangwei Liang Bin Cui Junpeng Fang Lingling Tang Yulin Zeng Xingtao Hu Jiachen Gao Giovanni Mazzanti Jinliang He Jianxiao Wang Davide Fabiani Gilbert Teyssedre Yang Cao Feipeng Wang Yunlong Zi The State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijingChina Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina Simpson Querrey Institute Northwestern UniversityEvanstonIllinoisUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPennsylvaniaUSA Department of Information Technology and Electrical Engineering ETH ZürichZürichSwitzerland School of Electrical and Information Engineering Tianjin UniversityTianjinChina Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Electrical and Electronic Engineering The University of ManchesterManchesterUK Department of Electrical Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina Key Laboratory of Control of Power Transmission and Conversion(SJTU) Ministry of EducationShanghaiChina College of Electrical Engineering Sichuan UniversityChengduChina Shenzhen Institute of Advanced Technology Chinese Academy of Sciences ShenzhenShenzhenChina School of Electrical Engineering Wuhan UniversityWuhanChina School of Integrated Circuits Tsinghua UniversityBeijingChina Jiangsu Jinxin Electric Appliance Co.Ltd. YangzhouChina Tai'an Tiancheng Safety Evaluation Co. Ltd.Tai'anChina Department Electrical Electronic and Information EngineeringUniversity of BolognaBolognaItaly National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijingChina Laplace Paul Sabatier Universityand CNRSToulouseFrance Electrical and Computer Engineering University of ConnecticutStorrsConnecticutUSA State Key Laboratory of Power Transmission Equipment&System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingChina Thrust of Sustainable Energy and Environment The Hong Kong University of Science and Technology(Guangzhou)GuangzhouChina De

The 2050 carbon-neutral vision spawns a novel energy structure revolution,and the construction of the future energy structure is based on equipment *** material,as the core of electrical power equipment and electrified transportation asset,faces unprecedented challenges and *** goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first *** engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are *** materials,including intelligent insulating material,high thermal conductivity insulating material,high energy storage density insulating material,extreme environment resistant insulating material,and environmental-friendly insulating material,are cat-egorised with their scientific issues,opportunities and challenges under the goal of carbon neutrality being *** the context of carbon neutrality,not only improves the understanding of the insulation problems from a macro level,that is,electrical power equipment and electrified transportation asset,but also offers opportunities,remaining issues and challenges from the insulating material *** is hoped that this paper en-visions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality *** authors also hope that this paper can be helpful in future development and research of novel insulating materials,which promote the realisation of the carbon-neutral vision.

关键词： neutral insulation extreme

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Symmetry breaking and anomalous conductivity in a double moirésuperlattice

arXiv

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arXiv 2022年

作者： Li, Yuhao Xue, Minmin Fan, Hua Gao, Cun-Fa Shi, Yan Liu, Yang Watanabe, K. Taniguchi, T. Zhao, Yue Wu, Fengcheng Wang, Xinran Shi, Yi Guo, Wanlin Zhang, Zhuhua Fei, Zaiyao Li, Jiangyu National Laboratory of Solid-State Microstructures School of Electronic Science and Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu Nanjing210093 China Department of Materials Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Jiangsu Nanjing210016 China Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Institute for Frontier Science Nanjing University of Aeronautics and Astronautics Nanjing210016 China Department of Physics Institute for Quantum Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Jinan Institute of Quantum Technology Shandong Jinan250101 China Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan School of Physics and Technology Wuhan University Wuhan430072 China Guangdong Provisional Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology Guangdong Shenzhen518055 China

A double moirésuperlattice can be realized by stacking three layers of atomically thin two-dimensional materials with designer interlayer twisting or lattice mismatches. In this novel structure, atomic reconstruction of constituent layers could introduce significant modifications to the lattice symmetry and electronic structure at small twist angles. Here, we employ conductive atomic force microscopy (cAFM) to investigate symmetry breaking and local electrical properties in twisted trilayer graphene. We observe clear double moirésuperlattices with two distinct moiré periods all over the sample. At neighboring domains of the large moiré, the current exhibit either two- or six-fold rotational symmetry, indicating delicate symmetry breaking beyond the rigid model. Moreover, an anomalous current appears at the ‘A-A’ stacking site of the larger moiré, contradictory to previous observations on twisted bilayer graphene. Both behaviors can be understood by atomic reconstruction, and we also show that the cAFM signal of twisted graphene samples is dominated by the tip-graphene contact resistance that maps the local work function of twisted graphene and the metallic tip qualitatively. Our results unveil cAFM is an effective probe for visualizing atomic reconstruction and symmetry breaking in novel moirésuperlattices, which could provide new insights for exploring and manipulating more exotic quantum states based on twisted van der Waals heterostructures. © 2022, CC BY.

关键词： Graphene

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Pedot-Coated Rice Husk-Based Activated Carbon: Boosting Lead-Acid Battery Performance

SSRN

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SSRN 2023年

作者： Zhang, Xianglin Chen, Wei Yang, Liren Wang, Jiaxing Sun, Xiaofei Zhao, Yi Liu, Yijie Qi, Penggang Mei, Jiang Xiong, Yuanquan Key Laboratory of Energy Thermal Conversion and Control Ministry of Education School of Energy and Environment Southeast University Jiangsu Nanjing210096 China Jiangxi Jinkang Advanced Material Sci-Tech Co. Ltd Taihe343700 China Zhe Jiang Engineering Research Center for Tissue Repair Materials Wen Zhou Institute University of Chinese Academy of Sciences Wenzhou325000 China Jian Agricultural and Rural Industry Development Service Center Jian343000 China Shandong University of Technology China

Despite the surge in novel energy storage systems, lead-acid batteries remain entrenched in the market, chiefly attributed to their well-established technology, affordability, and dependable safety profile. Yet, they are not without shortcomings, notably their limited energy density and abbreviated cycle life. The profound impact of positive electrode materials on lead-acid batteries is undeniable, as these materials directly dictate the batteries' charging and discharging efficiency, energy density, cycle longevity, and overall stability. Here we report on an innovative positive active material additive, wherein the conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is coated onto rice husk-based activated carbon (RHAC) surfaces via in-situ polymerization in solution to form a composite material (PEDOT@RHAC). Astonishingly, lead-acid batteries fortified with PEDOT@RHAC within their positive plates showcased remarkable electrochemical prowess. Incorporating PEDOT@RHAC into the positive plates of lead-acid batteries has demonstrated exceptional electrochemical performance. The enhanced deep cycling capability of these batteries is evident, with a substantial increase in cycle life by 2.08 times and an augmentation in discharge capacity by 1.3 times compared to the control batteries. This positive electrode additive plays a pivotal role in augmenting the overall performance and extending the lifespan of lead-acid batteries, potentially paving the way for their broader commercial application. © 2023, The Authors. All rights reserved.

关键词： Lead acid batteries

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Advances in graphene quantum dots-based photocatalysts for enhanced charge transfer in photocatalytic reactions

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Chinese Chemical Letters 2025年

作者： Junqing Ye Mengyuan Ren Junfeng Qian Xibao Li Qun Chen Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization Nanchang Hangkong University Nanchang 330063 China

The development of efficient green energy technology is imperative in the face of energy crises and environmental concerns. Photocatalysis, which utilizes solar energy for processes such as carbon dioxide (CO 2 ) reduction, organic pollutants degradation, and hydrogen (H 2 ) production through water splitting, is a promising approach. The key to high-efficiency photocatalysis lies in the design of superior photocatalysts. Graphene quantum dots (GQDs) have sparked significant interest in photocatalysis due to their exceptional up conversion photoluminescence (UCPL), strong light-capturing capability, and unique photoinduced charge transfer properties. However, their standalone use is limited by stability and activity. By integrating GQDs into composite photocatalysts, the separation of photogenerated electron-hole pairs is enhanced, boosting photocatalytic performance. This review provides the first overview and summary of the preparation methods of GQDs in photocatalysts, encompassing top-down and bottom-up strategy. Subsequently, a pioneering detailed summary was made on the applications of GQDs-semiconductor composites (metal organic frameworks, CdS, and bismuth-based oxides, etc. ) in photocatalytic reactions such as CO 2 reduction, organic pollutant degradation, and H 2 generation. Furthermore, the corresponding representative examples and mechanisms are also elaborated and discussed respectively. Finally, the challenges and prospects for GQDs-based photocatalysts in the field of photocatalysis are proposed. This review provides inspiration and guidance for the development of efficient GQDs-based photocatalysts.

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Layer dependence of stacking order in nonencapsulated few-layer CrI3

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Science China materials 2020年第3期63卷 413-420页

作者： Kai Guo Bowen Deng Zhen Liu Chaofeng Gao Zhongtai Shi Lei Bi Li Zhang Haipeng Lu Peiheng Zhou Linbo Zhang Yingchun Cheng Bo Peng National Engineering Research Center of Electromagnetic Radiation Control Materials School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Flexible Electronics&Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 211816China Department of Physics Broida HallUniversity of California Santa BarbaraCA 93106-9530USA Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 611731China

Long-range magnetic orders in atomically thin ferromagnetic CrI3 trigger new fascinating physics and application *** physical properties of two-dimensional(2D)ferromagnetism CrI3 are significantly influenced by interlayer spacing and stacking order,which are sensitive to the hydrostatic pressure and external ***,there remains debate on the stacking order at low ***,we study the interlayer coupling and stacking order of non-encapsulated 2–5 layer and bulk CrI3 at 10 K by Raman spectroscopy;demonstrate a rhombohedral stacking in both antiferromagnetic and ferromagnetic *** opposite helicity dependence of Ag and Eg modes arising from phonon symmetry further validates the rhombohedral *** anomalous temperature-dependent behavior is observed due to spin-phonon coupling below 60 *** study provides insights into the interlayer coupling and stacking orders of 2D ferromagnetic materials.

关键词： ferromagnetic 2D materials Ising ferromagnet spintronics magneto-optical

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Ecological risks of biodegradable plastics

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Science (New York, N.Y.) 2025年第6751期388卷 1034页

作者： Xiaoli Zhao Xiaowei Wu Qi Wang Fengchang Wu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing China. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing China. National Key Laboratory of Advanced Polymer Materials Polymer Research Institute Sichuan University Chengdu China.

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