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Swelling and erosion assisted sustained release of tea polyphenol from antibacterial ultrahigh molecular weight polyethylene for joint replacement

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Chinese Chemical Letters 2025年第2期36卷 316-320页

作者： Yue Ren Kang Li Yi-Zi Wang Shao-Peng Zhao Shu-Min Pan Haojie Fu Mengfan Jing Yaming Wang Fengyuan Yang Chuntai Liu State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Tianjian Laboratory of Advanced Biomedical Sciences Academy of Medical SciencesZhengzhou UniversityZhengzhou 450000China Department of Stomatology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000China

The considerable hazard posed by periprosthetic joint infections underlines the urgent need for the rapid advancement of in-situ drug delivery systems within joint ***,the pursuit of sustained antibacterial efficacy remains a formidable *** this context,we proposed a novel strategy that leverages swelling and erosion mechanisms to facilitate drug release of drug-loaded ultrahigh molecular weight polyethylene(UHMWPE),thereby ensuring its long-lasting antibacterial *** oxide(PEO),a hydrophilic polymer with fast hydrating ability and high swelling capacity,was incorporated in UHMWPE alongside the antibacterial tea polyphenol(epigallocatechin gallate,EGCG as representative).The swelling of PEO enhanced water infiltration into the matrix,while the erosion of PEO balanced the release of the encapsulated EGCG,resulting in a steady *** behavior was supported by the EGCG release profiles and the corresponding fitted release kinetic *** demonstrated by segmented antibacterial assessments,the antibacterial efficiency was enhanced 2to 3 times in the PEO/EGCG/UHMWPE composite compared to that of EGCG/***,the PEO/EGCG/UHMWPE composite exhibited favorable biocompatibility and mechanical performance,making it a potential candidate for the development of drug-releasing joint implants to combat prosthetic bacterial infections.

关键词： Tea polyphenol Antibacterial PEO UHMWPE Joint replacement

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Self-powered Smart Water Meter for Pipeline Flow Monitoring 5th

Self-powered Smart Water Meter for Pipeline Flow Monitoring

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5th International Conference on Vibration and Energy Harvesting Applications, VEH 2024

作者： Mei, Mingqi Wang, Zizhao Li, Yunfei Tang, Tianyi Liu, Huicong School of Mechanical and Electric Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Soochow University Suzhou215123 China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)9789819611904

This paper presents the development of a water flow energy harvester (WFEH) designed to power smart water meters within residential piping systems. Utilizing the kinetic energy of flowing water, the device harnesses this energy and converts it into electricity via electromagnetic principles. The impeller's shape, quantity, and guide vane height at the inlet were simulated using computational fluid dynamics (CFD) software, comparing impeller rotational speeds under various simulation parameters to select the appropriate impeller configuration. Experimental data indicate that with an inlet water pressure of 0.12 MPa and an outlet pressure of 0.06 MPa, a single coil in the device generates a peak voltage of 3.6 V, with a peak power of 54.2 mW and a head loss of 6 m. The maximum head loss permitted in residential water pipes is 10 m. The energy generation module of the WFEH has been designed with a six-coil array, significantly enhancing its performance output. Theoretically, the output power of the WFEH is sufficient to meet the energy needs of smart water meters. Therefore, the WFEH holds potential for integration into urban water management systems, providing a stable energy supply for data collection and transmission, and contributing to the development of self-powered smart meters. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Water meters

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Monitoring of lubrication and wear in-situ by triboelectrification under grease lubrication

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Friction 2025年第2期13卷 89-98页

作者： Yiming Lei Yange Feng Zixiang Wu Qiang Gao Zhuopei Zhang Wenpeng Wang Liucheng Wang Youqiang Wang Daoai Wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 265503China School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Qingdao Center of Resource Chemistry and New Materials Qingdao 266104China

The stable operation of friction pairs is one of the most critical factors to maintain the stable operation of mechanical *** real-time monitoring of lubrication state of the friction pair is very important to ensure the normal operation of machinery and realize early warning of wear failure,but it is also a big *** this article,a new lubrication insitu monitoring system is designed,which can monitor the lubrication and wear state of friction pairs through *** current acquisition module and friction coefficient acquisition module are integrated into a high vacuum hydrodynamic oil film thickness measuring instrument to explore the intrinsic relationship between triboelectricity and friction coefficient *** severe wear occurs,the oil film at the interface of the friction pair is no longer complete,and the accumulated triboelectric charge at the interface of the friction pair breaks down the air and causes discharge,the friction current suddenly increases from nanoampere level to microampere *** time node when discharge occurs at the steel ball interface is well consistent with the time node when the friction pair suffers serious *** to the corresponding relationship between the triboelectric current and the friction and wear status of the friction pair,an early wear warning monitoring system is designed to monitor the operating status of the friction pair in real time through triboelectric *** the mechanical friction pair is worn,the early warning system will send out sound and light alarm signals and send real-time warnings to the mobile terminal through the Internet of Things,providing a new and reliable method for real-time monitoring of friction and wear of grease-lubricated machinery.

关键词： friction sensing wear warning triboelectric sensor in-situ monitoring real-time

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Manganese-based oxides cathodes for potassium-ion batteries: a review

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Journal of Energy Chemistry 2025年 108卷 1-18页

作者： Yue, Qinggang Xia, Maoting Zhou, Jiang Cheng, Juanjuan Lu, Bingan School of Physics and Electronics Hunan University Hunan Changsha410082 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Hunan Changsha410082 China School of Materials Science and Engineering and Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of Education Central South University Hunan Changsha410083 China School of Materials Science and Engineering Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and Technology Hunan Xiangtan411201 China

Potassium-ion batteries (PIBs) were recognized for their natural abundance, high theoretical output voltage, and the availability of commercialized graphite anodes. However, the development of high-performance manganese-based layered oxide cathodes—a leading candidate for PIB systems—has been fundamentally constrained by irreversible phase transitions (PT) during the cycling process, manifesting as severe structural degradation and capacity fading. This review presents a transformative paradigm integrating machine learning (ML) with multiscale characterization to analyse the complex phase transition mechanisms in Mn-based cathodes. Through systematic ML-driven interrogation of structure–property relationships, we establish quantitative descriptors for phase stability and develop predictive models for transition dynamics. Furthermore, we highlight recent breakthroughs in cross-disciplinary approaches, enabling the rational design of PT-mitigated cathode architectures. By consolidating these insights into a unified knowledge framework, this work provides strategic guidelines for developing structurally robust Mn-based cathodes and outlines future research directions for next-generation PIB systems. © 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences.

关键词： Setting

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Combined anisotropic and cyclic constitutive model for laser powder bed fusion fabricated aluminum alloy

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Chinese Journal of Aeronautics 2025年第1期38卷 165-184页

作者： Fei-Fan LI Jihong ZHU Weihong ZHANG Shifeng WEN Jingwen SONG Jun MA Gang FANG State IJR Center of Aerospace Design and Additive Manufacturing School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China School of Materials Science and Engineering Northwestern Polytechnical UniversityXi'an 710072China Department of Mechanical and Industrial Engineering Norwegian University of Science and TechnologyTrondheim 7491Norway State Key Laboratory of Tribology in Advanced Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China

This study presents new methods to effectively model the anisotropic yielding and hardening behavior of laser powder bed fusion fabricated aluminum alloy under both monotonic and cyclic loading *** proposed model combines the yield surface-interpolation method to accurately describe the anisotropic hardening rates in various directions,with the Chaboche kinematic hardening rule to precisely reflect the cyclic *** numerical implementation of the combined anisotropic and cyclic constitutive model,a fully implicit stress integration algorithm based on return mapping method is ***,the multiple parameters associated with the model are categorized and identified in an uncoupled *** isotropic and cyclic hardening parameters are determined by an inverse method,and the stability of the optimization outcomes is validated by applying different starting points for the ***,the back-stress effect on the identification of anisotropic parameters associated with the stress invariant-based Hill48 yield function is considered for the first *** consideration leads to an improved prediction accuracy compared to the identification of anisotropic parameters without considering back-stress *** combined anisotropic and cyclic constitutive model,along with the calibrated parameters,are proven capable of accurately reproducing the intricate deformation behavior of laser powder bed fusion fabricated AlSi10Mg.

关键词： Constitutive models Anisotropy Kinematic hardening Laser powder bed fusion Aluminum alloys

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Kerr-lens mode-locked Ho:CALYO laser at 2.1 µm

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Optics Express 2025年第8期33卷 18017-18023页

作者： Wang, Jing Yao, Weichao Liu, Jian Xu, Xiaodong Xu, Jun Leng, Yuxin State Key Laboratory of Ultra-intense Laser Science and Technology Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Jiangsu Key Laboratory of Advanced Laser Materials and Devices Jiangsu Normal University Xuzhou221116 China School of Physics Science and Engineering Institute for Advanced Study Tongji University Shanghai200092 China

We report on a Kerr-lens mode-locked Ho laser operating at 2.1 µm, based on a disordered structure crystal Ho:CALYO. The laser-generated ultrashort pulses with a pulse duration of 177 fs and an average output power of 0.81 W at a repetition rate of 90 MHz, with an optical-to-optical efficiency of 11%. By optimizing the system for shorter pulse durations, we achieved pulses as short as 166 fs, though at a reduced output power of 0.18 W. The pulse duration and output power limitations were analyzed and discussed. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Pulse repetition rate

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In-situ growth of titanium alkoxide network encapsulated perovskite nanograin for robust light emission

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Nano Research 2025年第4期18卷 435-442页

作者： Si Peng Yunlong Liu Ying Liu Hao Wang Mingyu Ma Wenjia Zhou Ruiqi Xu Xianyuan Jiang Danni Yu Wei Zhou Yingbo Zhao Zhijun Ning School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China State Key Laboratory of Advanced Medical Materials and Devices ShanghaiTech UniversityShanghai 201210China

The construction of a thin stable shell to encapsulate perovskite with effective carrier transport is a promising strategy to fabricate highly efficient and stable perovskite based optoelectronic ***,it is generally difficult to control the thickness and location of the encapsulating materials,ideally on perovskite *** this work,we developed a one-step method for the growth of titanium alkoxide networks in-situ in perovskite film forming an encapsulating layer on perovskite nanograin *** thin encapsulating network brings much enhanced stability and allows effective carrier transport *** emitting diode based on this composite shows much enhanced stability under continuous operation.

关键词： perovskite light-emitting diodes metal organic framework titanium-oxo cluster

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Broadband, high-linearity TFLN electro-optic modulator for integrated microwave photonics using reconfigurable dual-parallel modulation

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Optics Express 2025年第6期33卷 13805-13815页

作者： Qin, Yan-Yan Gu, Xiao-Wen Tang, Jie Ye, Hui-Yan Dong, Wen-Hao Song, Yuan-Jun Qian, Guang Zhang, Xiao-Yang Zhang, Tong Southeast University Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and Engineering Jiangsu Nanjing210096 China National Key Laboratory of Solid-state Microwave Devices and Circuits Nanjing210016 China Nanjing Electronic Devices Institute Nanjing210016 China Key Laboratory of Micro-inertial Instrument and Advanced Navigation Technology Ministry of Education School of Instrument Science and Engineering Southeast University Jiangsu Nanjing210096 China Suzhou Key Laboratory of Metal Nano-optoelectronic Technology Southeast University Suzhou Campus Jiangsu Suzhou215123 China

Integrated electro-optic modulators with large bandwidth, high linearity and low driving voltage are key building blocks for integrated microwave photonic (IMWP) links to transmit broadband signals with high fidelity. In this work, thin-film lithium niobate electro-optic modulator consisting of a thermo-optic reconfigurable coupler and dual-parallel Mach-Zehnder modulation scheme is proposed and demonstrated to achieve spurious-free dynamic range of 112.87/107.71 dB·Hz2/3 at 1/10 GHz while keeping large bandwidth (>67 GHz) and low half-wave voltage (2.7 V) simultaneously. The demonstration of this device paves a new route for high-performance electro-optic modulators in future functional IMWP systems. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Fiber optic communications Integrated photonics Lithium niobate Microwave photonics Optical components Silicon modulators

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Effcient and stable hydrogen evolution and antibiotic degradation in all-pH-scale water/alkaline seawater using Fe-Co phosphide hollow nanocages fabricated from metallurgical solid waste

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Journal of Energy Chemistry 2025年第2期101卷 661-675,I0014页

作者： Zekun Zhao Suqin Li Yongkui Li Qingqing Xia Haiping Lei Hao Zhang Shuqiang Jiao School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBejing 100083China State Key Laboratory of Advanced Metallurgy University of Science and Technology BejingBeijing 100083China

The utilization of seawater,a plentiful and cost-effective resource,instead of freshwater for H_(2)production through electrolysis has garnered significant ***,we present the synthesis of open-structured Fe-Co phosphide(FCP)nanocages for the overall seawater electrolysis,employing metallurgical solid waste(steel rolling sludge,SRS)as the precursor *** FCP nanocages demonstrate exceptional catalytic activity for the hydrogen evolution reaction(HER)in all pH scales,achieving performance comparable to that of Pt/C catalysts at high current densities,The electrolyzer assembled with FCP‖FCP requires 1.57 and 1.68 V to achieve current densities of 10 and 100 mA cm^(-2),***,the assembled FCP electrolyzer showcases over 100 h of cycling stability and nearly 100%Faradaic ***,it can be powered by commercially available silicon solar panels,operating under an intensity of 100 mW cm^(-2),and by wind-driven sources,rendering it highly promising for real-world applications,The seawater hydrogen evolution system coupled with levofloxacin(LEV)degradation was constructed for the first *** oxidation potential of LEV oxidation reaction(LEVOR)was significantly lower than that of oxygen evolution reaction(OER),indicating that the LEV degradation reaction occurred preferentially and achieved a removal efficiency of 98.57%within 60 *** study provides effective strategies for valorizing SRS and offers insights into the fabrication of highperformance catalysts.

关键词： Metallurgical solid waste Fe-Cophosphide nanocages All-pH-scale Synergistic catalysis High current density Levofloxacin

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Special issue on progress of real-time confocal microscopy study on steelmaking and phase transformation in metallic materials

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Journal of Iron and Steel Research International 2025年第2期32卷 313-314页

作者： Wangzhong Mu Ying Ren Tong-sheng Zhang Deepoo Kumar Susanne Michelic Bryan Webler Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang 110819LiaoningChina Department of Materials Science and Engineering KTH Royal Institute of TechnologyStockholm 10044Sweden School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing 100083China School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Department of Metallurgical Engineering and Materials Science IIT BombayPowaiMumbaiIndia Christian Doppler Laboratory for Inclusion Metallurgy in Advanced Steelmaking Montanuniversitaet LeobenLeoben 8700Austria Department of Materials Science and Engineering Carnegie Mellon UniversityPittsburgh 15213PAUSA

High-temperature confocal laser scanning microscopy(HT-CLSM)is a robust characterization tool which can provide in situ real-time studies of materials *** facility has been applied in investigating interfacial phenomena in ironmaking and steelmaking as well as phase transformations during heat treatment of metallic *** pioneering work on the application of HTCLSM dates back to twenty-five years ago,to directly observe the crystallization of undercooled steel melt.

关键词： transformation materials steel

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