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Rechargeable Aqueous Zinc-Ion Batteries in MgSO4/ZnSO4 Hybrid Electrolytes

Nano-Micro Letters 2020年第5期12卷 33-48页

作者： Yingmeng Zhang Henan Li Shaozhuan Huang Shuang Fan Lingna Sun Bingbing Tian Fuming Chen Ye Wang Yumeng Shi Hui Ying Yang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongPeople’s Republic of China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province ShenzhenPeople’s Republic of China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060People’s Republic of China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore School of Physics and Telecommunication Engineering South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Material Physics of Ministry of Education School of Physics and EngineeringZhengzhou UniversityZhengzhou 450052People’s Republic of China

MgSO4 is chosen as an additive to address the capacity fading issue in the rechargeable zinc-ion battery system of MgxV2O5·nH2O//ZnSO4//*** with different concentration ratios of ZnSO4 and MgSO4 are *** batteries measured in the 1 M ZnSO4^-1 M MgSO4 electrolyte outplay other competitors,which deliver a high specific capacity of 374 mAh g^-1 at a current density of 100 mA g^-1 and exhibit a competitive rate performance with the reversible capacity of 175 mAh g^-1 at 5 A g^-*** study provides a promising route to improve the performance of vanadium-based cathodes for aqueous zinc-ion batteries with electrolyte optimization in cost-effective electrolytes.

关键词： Aqueous zinc-ion batteries Hybrid electrolytes Electrolyte additives Magnesium ions Vanadates

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Groundwater resources survey of tongchuan city using the audio magnetotelluric method

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Applied Geophysics 2020年第5期17卷 660-671,900页

作者： Xu Zhi-min Tang Jing-tian Li Guang Xin Hui-Cui Xu Zhang-jian Tan Xin-ping LI Jin Heibei Instrument&Meter Engineering Technology Research Center Chengde Petroleum CollegeChengde 067000China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education(Central South University)Changsha 410083China Northwest Research Institution of Engineering Investigations and Design Xi’an 710003China School of Geophysics and Measurement-control Technology Nanchang 330013China College of Information Science and Engineering Hunan Normal UniversityChangsha 410081China

The development of Tongchuan City,Shaanxi Province,located in the northwestern region of China,is restricted by water *** direct current resistivity and induced polarization sounding methods are typically applied in finding urban *** methods,however,are not effective due to their complicated topography and geological *** application practice shows that the audio magnetotelluric(AMT)method has a large depth of exploration,high work effi ciency,and high lateral *** investigate the distribution of groundwater resources,we deployed three audio-frequency magnetotelluric profiles in the city *** impedance tensor information of AMT data is obtained using *** data dimension analysis reveals that the two-dimensional structural features of the observation area are *** main structure of the observation area is about 45°northeast,as indicated by structural trend analysis.A shallow two-dimensional electrical profile of 1 km in Tongchuan City is obtained by two-dimensional nonlinear conjugate gradient ***,combined with regional geological information,the geological structure characteristics reflected by the electrical profile were obtained along with the detailed characteristics of water-rich structures in the *** infl uence of the structure on the groundwater distribution was analyzed,and the water-rich areas were identifi *** work contributes to the prospective development of Tongchuan City.

关键词： urban geology audio magnetotelluric sounding method electrical structure groundwater resources

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Non-reciprocity of energy transfer derived from cubic stiffness-induced nonlinear phenomena

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Results in Physics 2025年 73卷

作者： Kong, Na Sun, Min Chen, Jianen Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin 300384 China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of Technology Tianjin 300384 China School of Science Tianjin Chengjian University Tianjin 300384 China

Introducing purely nonlinear elastic elements can induce rich dynamic behaviors, such as bifurcations, jumps and isolated resonance curves, to linear systems. Therefore, these elements are suitable for constructing strong non-reciprocity of vibration energy transfer. First, the energy transfer along reciprocal directions in a three-degree-of-freedom system is investigated, where three oscillators are connected by cubic springs. The semi-analytical solutions of the system are obtained using the complexification-averaging method and the least squares method. The results are compared against numerical solutions obtained by the Runge-Kutta method. The excitation amplitude range that produces strong non-reciprocity of vibration energy is analyzed. The jump phenomenon under combined excitation is investigated, and a trigger method for constructing non-reciprocity using an impulse is proposed. Then, an oscillator chain with cubic stiffness and scaling parameters is embedded into a multi-degree-of-freedom linear oscillator system to further explore the effect of cubic stiffness. Energy transfer along two directions is compared by exciting the leftmost oscillator and the rightmost oscillator. Moreover, the trigger effect of the impulse on non-reciprocity is demonstrated. The results show significant differences in vibration energy transfer within three distinct frequency bands. The critical points between reciprocal and non-reciprocal states are obtained, and the three stages of reciprocity related to excitation amplitude are analyzed. Lastly, the modulation effect of the cubic stiffness on non-reciprocity is conducted by comparing the energy of the output oscillator. © 2025 The Authors

关键词： Cubic stiffness Energy transfer Jump phenomenon Non-reciprocity

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Microgroove convexity is critical for robust gaseous layers on hierarchically-structured superhydrophobic surfaces

arXiv

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arXiv 2021年

作者： Han, Xiao Liu, Jingnan Upmanyu, Moneesh Wang, Hailong CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Anhui Hefei230027 China Department of Mechanical and Industrial Engineering Northeastern University BostonMA02115 United States

Gaseous layers (plastrons) trapped on the surfaces of immersed hydrophobic surfaces are critical for their function. Fibrillar morphologies offer a natural pathway, yet they are limited to a narrow range of liquid-surface systems and are vulnerable to pressure fluctuations that irreversibly destroy the plastron. Inspired by the convexly grooved surfaces of water fern (Salvinia) leaves that support their fibrous outgrowths, we study the plastron formation on 3D-printed dual-scale surfaces with elliptical interconnected microgrooves. The groove curvature stabilizes a seed gas layer (SGL) that facilitates plastron formation and restoration for all immersed hydrophobic surfaces. Computations and theoretical calculations reveal that the SGL storage capacity that sets the plastron robustness follows from the liquid menisci adaption to the groove geometry and pressure, and it can be further tuned using separated grooves. Our study highlights groove convexity as a key morphological feature for the design of multi-scale immersed surfaces for robust superhydrophobicity. © 2021, CC BY.

关键词： Hydrophobicity

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Effective reduction of matrix thermal conductivity through composite softening

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Newton 2025年第1期1卷

作者： Jiajing Huang James Patrick Male Yandong Sun Ramya Gurunathan Pochung Huang Gerald Jeffrey Snyder Yue Lin CAS Key Laboratory of Design and Assembly of Functional Nanostructures and State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China University of Chinese Academy of Sciences Beijing 100049 China Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA Materials Science and Engineering Division National Institute of Standards and Technology Gaithersburg 20899 MD USA

Conventional wisdom suggests that incorporating high-thermal-conductivity nanomaterials, such as graphene and carbon nanotubes, can enhance the thermal conductivity of composite matrices. However, our study on graphene nanoplatelets (GNPs) within a lead telluride (PbTe) matrix, along with an extensive review of 18 composites, reveals that such additions can lead to a significant decrease in thermal conductivity. This reduction is attributed to a decrease in phonon velocity, as seen by measuring the sound velocity v s , which strongly impacts lattice thermal conductivity ( κ L ). For instance, a volume fraction of just 1.47% GNPs results in an 11.1% reduction in PbTe’s v s , cutting κ L by 29.7%. We introduce a dimensionless parameter, χ , derived from the contrasts in Young’s modulus and density between the composite constituents. This parameter allows for the prediction of the degree to which v s and, consequently, κ L are reduced, based on the mechanical properties of the composite components. Alongside interfacial phonon scattering, this research pivots the focus toward composite softening as a critical factor in manipulating thermal conductivity.

关键词： structure-properties relationship composites phenomenological model thermal conductivity graphene thermoelectrics

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Multiferroic van der Waals heterostructure FeCl2/Sc2CO2: Nonvolatile electrically switchable electronic and spintronic properties

arXiv

引用

arXiv 2022年

作者： Cao, Liemao Deng, Xiaohui Zhou, Guanghui Liang, Shi-Jun Nguyen, Chuong V. Ang, L.K. Ang, Yee Sin College of Physics and Electronic Engineering Hengyang Normal University Hengyang421002 China Department of Physics Key Laboratory for Low-Dimensional Structures and Quantum Manipulation Ministry of Education Hunan Normal University Changsha410081 China Deparment of Physics College of Sciences Shaoyang University Shaoyang422001 China National Laboratory of Solid State Microstructures School of Physics Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China Department of Materials Science and Engineering Le Quy Don Technical University Hanoi100000 Viet Nam Science Mathematics and Technology Singapore University of Technology and Design 8 Somapah Road 487372 Singapore

Multiferroic van der Waals (vdW) heterostrucutres offers an exciting route towards novel nanoelectronics and spintronics device technology. Here we investigate the electronic and transport properties of multiferroic vdW heterostructure composed of ferromagnetic FeCl2 monolayer and ferroelectric Sc2CO2 monolayer using first-principles density functional theory and quantum transport simulations. We show that FeCl2/Sc2CO2 heterostructure can be reversibly switched from semiconducting to half-metallic behavior by electrically modulating the ferroelectric polarization states of Sc2CO2. Intriguingly, the half-metallic phase exhibits a Type-III broken gap band alignment, which can be beneficial for tunnelling field-effect transistor application. We perform a quantum transport simulation, based on a proof-of-concept two-terminal nanodevice, to demonstrate all-electric-controlled valving effects uniquely enabled by the nonvolatile ferroelectric switching of the heterostructure. These findings unravels the potential of FeCl2/Sc2CO2 vdW heterostructures as a building block for designing a next generation of ultimately compact information processing, data storage and spintronics devices. Copyright © 2022, The Authors. All rights reserved.

关键词： Van der Waals forces

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Polyurethane Modified Asphalt Mixture Incorporating Waste Glass with a Wide Size Range: Preparation and Performance Evaluation

SSRN

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SSRN 2023年

作者： Sun, Zhilin Chen, Bowen Liu, Shu Zhou, Tao Huang, Rui Key Laboratory of Special Environment Road Engineering of Hunan Province Changsha University of Science & Technology Changsha China Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo China Ningbo China Department of Civil Engineering University of Nottingham Ningbo China Ningbo China Design Institute of Zhejiang Jiaotong Group Co. Ltd Hangzhou China New Materials Institute University of Nottingham Ningbo China Ningbo China

Increasing the utilisation rate of waste glass in asphalt mixtures, especially that with a wide range of particle sizes, is of great importance to resource recycling, while it may bring drawbacks to the engineering performance of asphalt mixtures. Incorporating polyurethane (PU) as a modifier can enhance asphalt mixture's performance, but there is limited research considering the usage of waste glass as aggregates. In this study, PU modified asphalt mixtures were prepared, incorporating waste glass particles ranging in size from 2.36 mm to 9.5 mm as a portion of the aggregates. Optimal preparation methods and mix designs for the PU-modified asphalt binder were determined through a series of tests designed based on Orthogonal method. The performances of the PU-modified asphalt binders were then evaluated to guide the selection of the optimal preparation method and mix design. PU-modified waste glass asphalt mixtures were then prepared and their engineering performances were assessed at various glass-to-aggregate ratios. The results show that scheme PU-1 with a shearing temperature of 140 °C, a shearing time of 10 min, a PU content of 10% and a compatibiliser content of 2% is suggested for preparing the PU-modified asphalt binder, which shows the best performances due to superior chemical modification and compatibility. Higher glass content decreases the high/low-temperature performance, but it can be improved by adding silane coupling agent or hydrated lime, with the latter showing better results. The incorporation of glass particles has little impact on anti-sliding performance, and asphalt mixtures maintain excellent anti-sliding properties up to a 20% replacement rate. Overall, the performance of the asphalt with waste glass up to 15% can meet the specification requirements. This novel approach offers a potential solution to enhance the incorporation of waste materials in asphalt construction, contributing to sustainable and environmentally-friendly road infrastru

关键词： Chemical modification

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Prediction method and optimization analysis of ultimate strength of L-joint between bulkhead and deck of full-scale sandwich composite material

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Ocean Engineering 2025年 336卷

作者： Yuqiang Wang Guoqing Feng Jiwei Huang Wei Shen Hongyang Ma College of Shipbuilding Engineering Harbin Engineering University 150001 Harbin China International Joint Laboratory of Naval Architecture and Offshore Technology between Harbin Engineering University and the University of Lisbon 150001 Harbin China Marine Design & Research Institute of China Shanghai 200011 China Hubei Defense Science and Technology Key Laboratory of Ship Explosion Damage and Protection Wuhan 430063 China School of Naval Architecture Ocean Energy Power Engineering Wuhan University of Technology Wuhan 430063 China

The overall structural stiffness and load-bearing capacity of large composite ship hulls is crucial for the structural safety of composite ships,the strength of joints directly influences the overall performance of the hull structure. Therefore, it is of significance to study the ultimate bearing capacity of marine sandwich composite joints. Based on the actual hull structures, a full-scale L-shaped joint between the deck and the bulkhead is designed, and the ultimate strength test and numerical prediction of the L-joint are performed. In the numerical simulation, the progressive failure criterion and stiffness degradation model of composite materials are further improved, and the failure mode of adhesive layer is analyzed by cohesion model. The comparison between the experimental and numerical results show that finite element simulation can accurately predict the complete failure process and various failure modes of joints. Furthermore, the influence of overlap width and panel thickness in transition reinforcement area on the ultimate bearing capacity of joints is quantitatively analyzed, and the optimization scheme of joint between sandwich composite bulkhead and deck is formed, which provides a reference for the design of full-scale sandwich composite joint structures in ships.

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A molecular device: A DNA molecular lock driven by the nicking enzymes

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Computational and structural biotechnology journal 2020年 18卷 2107-2116页

作者： Xiaokang Zhang Qiang Zhang Yuan Liu Bin Wang Shihua Zhou Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian University Dalian 116622 China. School of Computer Science and Technology Dalian University of Technology Dalian 116024 China.

As people are placing more and more importance on information security, how to realize the protection of information has become a hotspot of current research. As a security device, DNA molecular locks have great potential to realize information protection at the molecular level. However, building a highly secure molecular lock is still a serious challenge. Therefore, taking advantage of the DNA strand displacement and enzyme control technology, we constructed a molecular lock with a self-destructive mechanism. This molecular lock is mainly composed of logic circuits and takes nicking enzymes as inputs. To build this molecular lock, we first constructed a series of cascade circuits, including a YES-YES cascade circuit and a YES-AND cascade circuit. Then, an Inhibit logic gate was constructed to explore the inhibitory properties between different combinations of two nicking enzymes. Finally, using the characteristics of mutual inhibition between several enzymes, a DNA molecular lock driven by three nicking enzymes was constructed. In this molecular device, only the correct sequence of nicking enzymes can be input to ensure the normal operation of the molecular lock. Once the wrong password is entered, the device will be destroyed and cannot be recovered, which effectively prevents intruders from cracking the lock through exhaustive methods. The molecular lock has the function of simulating an electronic keyboard, which can realize the protection of information at the molecular level, and provides a new implementation method for building more advanced and complex molecular devices.

关键词： DNA Information Security Molecular Lock Nicking Enzyme

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Accelerated performance degradation test and analysis of high-temperature strain gauges

Accelerated performance degradation test and analysis of hig...

引用

13th International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2023)

作者： L. Li Z. Wang N. Yang Q. Wu H. Wang Z. Mao K. Ren Q. Wang Y. Wang National Key Laboratory of Strength and Structural Integrity School of Aeronautic Science and Engineering Beihang University Beijing People's Republic of China Shenyang Aircraft Design and Research Institute Shenyang People's Republic of China Institute of Spacecraft System Engineering China Academy of Space Technology Beijing People's Republic of China Navigation Instrument Research Institute Tianjin People's Republic of China Beijing Institute of Control Engineering Beijing People's Republic of China

ISBN: (数字)9781839539275

With the extension of the service time of the structure and the worse service temperature conditions, the drift problem of hightemperature strain gauges gradually becomes prominent. This research aims to address the issue of the drift of measurement results because of the performance degradation of high-temperature strain gauges, and investigate the drift law under different temperatures considering complex service environments. In this paper, a combination of experimental research and theoretical analysis is utilized to design and conduct the accelerated performance degradation test on high-temperature strain gauges. Based on the result of the test, an accelerated performance degradation model is developed using the Wiener process and Arrhenius model. Finally, estimation curves for the average value and percentile value of the performance parameters of the hightemperature strain gauges are obtained, which demonstrates that the established accelerated performance degradation model can reasonably describe the degradation law. Additionally, the established accelerated performance degradation model enables effective analysis and compensation of gauge drift at any temperature.

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