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In situ preparation of nano cone-like structures on 3D printed titanium alloy implants via one-step femtosecond laser manufacturing for better osseointegration,anti-corrosion,and anti-fatigue

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材料科学技术（英文版） 2025年第3期206卷 88-99页

作者： Yazhou Hu Hongshui Wang Donghui Wang Xiaomei Xia Ning Liu Tai Yang Baoe Li Chunyong Liang School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Center for Health Science and Engineering School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Center for Health Science and Engineering School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China

The poor surface conditions and osseointegration capacity of 3D printed Ti6Al4V implants(3DPT)sig-nificantly influence their performance as orthopedic and dental *** this work,we creatively introduce a one-step femtosecond laser treatment to improve the surface conditions and *** surface characterization,mechanical properties,corrosion resistance,and biological responses were *** results found that femtosecond laser eliminated defects like embedded powders and superficial cracks while forming the nano cones-like structures surface on 3DPT,leading to enhanced osseointegration,anti-corrosion,and anti-fatigue *** dynamics simulations revealed the ablation removal mechanism and the formation of nano cone-like *** findings were fur-ther supported by the in vivo studies,showing that the FS-treated implants had superior bone-implant contact and ***,the one-step femtosecond laser method is regarded as a promising surface modification method for improving the functional performance of Ti-based orthopedic implants.

关键词： 3D printed Femtosecond laser Surface modification Micro/nanostructure Osseointegration

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Event-triggered leader-follower bipartite consensus control for nonlinear multi-agent systems under DoS attacks

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science China(Information sciences) 2025年第3期68卷 286-301页

作者： Wei SU Chaoxu MU Song ZHU Ben NIU Changyin SUN School of Control Science and Engineering Tianjin University School of Mathematics China University of Mining and Technology School of Control Science and Engineering Dalian University of Technology School of Automation Southeast University

Aiming at the consensus control problem of nonlinear multi-agent systems(MASs) under directed topology, a leader-follower bipartite consensus control strategy is proposed. This strategy takes into account the potential for denial-of-service(DoS) attacks and completely unknown system dynamics. Specifically, the bipartite consensus dynamics describes the cooperation and competition relationship between followers and the leader, that is, the follower chooses to move in accordance with or opposite to the leader according to its trajectory. In order to optimize the communication bandwidth and mitigate the impact of DoS attacks, the proposed consensus control scheme integrates the DoS attack detection mechanism and event-triggered mechanism. In addition, neural networks(NNs) are used to solve the nonlinear problem, and a speed function is designed to achieve the desired tracking performance, ensuring that all agents' tracking errors converge to a predefined set in a finite time. With the help of backstepping, graph theory, and Lyapunov stability theory, sufficient conditions for achieving bipartite consensus without Zeno behavior are established. Finally, the accuracy and feasibility of the theoretical analysis are verified by simulation cases.

关键词： multi-agent systems neural networks bipartite consensus event-trigger denial-of-service attack

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Remarkable fluorescence enhancement of acridine orange and rhodamine B through immobilization on zirconia nanotube array film and its application on nitrite sensing

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材料科学技术（英文版） 2025年第5期208卷 26-37页

作者： Dong Liu Xixin Wang Dongxin Liu Jianling Zhao School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China

Zirconia nanotube array films(ZNAF)prepared by anodic oxidation method were used as immobilization materials for acridine orange(AO),rhodamine B(RB)and AO-RB systems.A comparative study on their fluorescence emission intensity,fluorescence resonance energy transfer(FRET)and fluorescence detection of nitrite in aqueous solutions and on immobilization films with ZNAF as carriers was carried *** demonstrate that the solution pH values and immobilization on ZNAF have a great influence on the per-formance of these fluorescent *** with aqueous solutions,the fluorescence emission in-tensity of AO and RB is considerably increased by immobilization,which is 8.0 and 4.2 times higher than the original,*** energy transfer efficiency(E)of the AO-RB system increases from 40.9％to 84.8％by loading it on ***,after immobilization onto ZNAF,the fluorescence detection performance of nitrite is also significantly *** limit of detection decreases from 0.95 ng/mL to 0.22 ng/mL and the sensitivity increases from 939.18 to 15,031.68 mL/pg through loading AO onto ZNAF.

关键词： ZrO2 nanotube arrays Acridine orange Rhodamine B Nitrite Detection

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Dual heterogeneous structure enabled ultrahigh strength and ductility across a broad temperature range in CrCoNi-based medium-entropy alloy

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材料科学技术（英文版） 2025年第4期207卷 46-59页

作者： Kang Tu Bo Li Zonglin Li Kaisheng Ming Shijian Zheng Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China

Developing alloys with exceptional strength-ductility combinations across a broad temperature range is crucial for advanced structural *** emerging face-centered cubic medium-entropy alloys(MEAs)demonstrate outstanding mechanical properties at both ambient and cryogenic *** are anticipated to extend their applicability to elevated temperatures,owing to their inherent ad-vantages in leveraging multiple strengthening and deformation ***,a dual heterostructure,comprising of heterogeneous grain structure with heterogeneous distribution of the micro-scale Nb-rich Laves phases,is introduced in a CrCoNi-based MEA through thermo-mechanical ***,a high-density nano-coherent γ'phase is introduced within the grains through isothermal aging *** superior thermal stability of the heterogeneously distributed precipitates enables the dual heterostructure to persist at temperatures up to 1073 K,allowing the MEA to maintain excellent mechan-ical properties across a wide temperature *** yield strength of the dual-heterogeneous-structured MEA reaches up to 1.2 GPa,1.1 GPa,0.8 GPa,and 0.6 GPa,coupled with total elongation values of 28.6％,28.4％,12.6％,and 6.1％at 93 K,298 K,873 K,and 1073 K,*** high yield strength primar-ily stems from precipitation strengthening and hetero-deformation-induced *** high flow stress and low stacking fault energy of the dual-heterogeneous-structured MEA promote the formation of high-density stacking faults and nanotwins during deformation from 93 K to 1073 K,and their den-sity increase with decreasing deformation *** greatly contributes to the enhanced strain-hardening capability and ductility across a wide temperature *** study offers a practical solu-tion for designing dual-heterogeneous-structured MEAs with both high yield strength and large ductility across a wide temperature range.

关键词： Medium-entropy alloy Dual heterogeneous structure Strength-ductility synergy Cryogenic temperatures Elevated temperatures

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Biofilm ablation on titanium alloy surface by photothermal and chemotherapeutic synergistic therapy

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材料科学技术（英文版） 2025年第5期208卷 252-262页

作者： Hailin Zhou Dong Gao Guodong Cheng Nana Wang Ran Zhang Liang Qiu Hongbo Yuan Chaofeng Wang Hui Gao Xiongwei Qu Chengfen Xing School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300401China Key Laboratory of Hebei Province for Molecular Biophysics Institute of Biophysics School of Health Sciences&Biomedical EngineeringHebei University of TechnologyTianjin 300401China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300401China School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China

With prolonged exposure in the human body,titanium alloy implants face challenges associated with bacterial attachment and proliferation,leading to implant failure and severe *** therapy(PTT)emerges as an efficient strategy for biofilm ***,the local high temper-ature of PTT and incomplete bacteria ablation in low-temperature PTT pose risks of damage to normal tissues and biofilm recalcitrance,*** this study,we synergistically combined photothermal therapy and chemotherapy to mildly disrupt biofilms of Staphylococcus aureus(***)to enhance the efficiency of biofilm *** synergistic nanoplatform comprises near-infrared-light responsive con-jugated polymers,heat-sensitive liposomes,and the antibiotic daptomycin for biofilm *** heat generated by conjugated polymers,stimulated with 808 nm light,alters biofilm permeability and releases antibiotics locally to eradicate *** nanoparticles exhibit biofilm dispersion activity and can effectively inhibit biofilm growth for up to 5 ***,this nanoplatform based on con-jugated polymers offers a reliable method for ablating biofilms on titanium alloy implant and exhibits potential in drug-resistant clinical applications.

关键词： Titanium alloy implants Biofilm Photothermal therapy Synergy therapy Conjugated polymer

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A Multi-Condition Sequential Network Ensemble for Industrial Energy Storage Prediction Considering the Condition Switching Characteristics

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 369-380页

作者： Tianyu Wang Fan Zhou Yangjie Wu Jun Zhao Wei Wang IEEE the School of Control Science and Engineering Dalian University of Technology the School of Information Science and Engineering Dalian Polytechnic University

As a crucial storage and buffering apparatus for balancing the production and consumption of byproduct gases in industrial processes, accurate prediction of gas tank levels is essential for optimizing energy system scheduling. Considering that the continuous switching of the pressure and valve status(mechanism knowledge) would bring about multiple working conditions of the equipment, a multi-condition time sequential network ensembled method is proposed. In order to especially consider the time dependence of different conditions, a centralwise condition sequential network is developed, where the network branches are specially designed based on the condition switching sequences. A branch combination transfer learning strategy is developed to tackle the sample imbalance problem of different condition data. Since the condition or status data are real-time information that cannot be recognized during the prediction process, a pre-trained and ensemble learning approach is further proposed to fuse the outputs of the multi-condition networks and realize a transient-state involved prediction. The performance of the proposed method is validated on practical energy data coming from a domestic steel plant, comparing with the state-of-the-art algorithms. The results show that the proposed method can maintain a high prediction accuracy under different condition switching cases, which would provide effective guidance for the optimal scheduling of the industrial energy systems.

关键词： Ensemble learning industrial energy prediction multi-working condition structural deep network transfer learning

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Thermo-responsive microneedles patch for transdermal drug delivery via squeezing in diabetic foot ulcers

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材料科学技术（英文版） 2025年第2期205卷 299-314页

作者： Xiaotong Wu Dan Xia Tingting Shi Baoe Li Donghui Wang Chunyong Liang Mingdong Dong Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Hebei Key Laboratory of Biomaterials and Smart Theranostics School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Hebei Key Laboratory of Biomaterials and Smart Theranostics School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China Interdisciplinary Nanoscience Center Aarhus UniversityAarhus CDK-8000Denmark

Microneedle(MN)patches could be a promising treatment for diabetic foot ulcers that plague thousands of people *** reducing skin resistance or increasing driving force can accelerate the effi-ciency of transdermal drug delivery with conventional MN patches,it can create toxic chemical residues or require the help of additional ***,a thermo-responsive microneedles patch(TMN)with high biocompatibility without additional equipment is *** TMN consisted of a bilayer mi-croneedles composed of sodium alginate(SA)-g-poly(N-isopropylacrylamide)layer(SA-g-PNIPAM)loaded with sucrose octasulfate sodium salt(SOS)and hyaluronic acid layer and a polycaprolactone/chitosan nanofiber membrane loading with tetracycline hydrochloride(TH)and *** accelerates drug re-lease by extruding the drug through a volumetric phase transition in response to temperature changes,and TH and SOS promote wound healing by inhibiting bacterial growth and promoting vascular regener-ation and epithelial *** results showed that the drug release of TMN was significantly faster,with the drug release rate of more than 80％in the 10th h,and the antibacterial rate of TMN could reach 800％.In addition,TMN had good biocompatibility and good healing effects in vivo,which may be helpful for the design of multifunctional dressings in the future.

关键词： Microneedles patch Thermal response Transdermal drug delivery Diabetic foot ulcers

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The optimal control theory——a scientific approach to fundamentally solving control problems

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science China(Information sciences) 2025年第1期68卷 389-391页

作者： Huanshui ZHANG School of Electrical and Automation Engineering Shandong University of Science and Technology School of Control Science and Engineering Shandong University

The maximum principle has bridged mathematical optimization to optimal control,ushering in significant developments and refinements in optimal control theory,notably during the 1960s with the advent of linear quadratic (LQ)control and linear quadratic estimation (LQE).This progression propelled optimal control theory into further advancements,encompassing stochastic control,robust/H-infinity control,model predictive control (MPC),networked control,and reinforcement learning *** control,established upon a rigorous mathematical foundation,extends static optimization theory to dynamic systems,exhibiting scientific essence,unity,and ***,since its inception,optimal control theory has served as an indispensable core role across all control-related domains,including communication-constrained control in networked systems,consensus control,cooperative control,and reinforcement learning control.

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Privacy-preserving filtering, control and optimization for industrial cyber-physical systems

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science China(Information sciences) 2025年第4期68卷 267-283页

作者： Derui DING Qing-Long HAN Xiaohua GE Xian-Ming ZHANG Jun WANG Department of Control Science and Engineering University of Shanghai for Science and Technology School of Engineering Swinburne University of Technology Department of Computer Science City University of Hong Kong

Industrial cyber-physical systems closely integrate physical processes with cyberspace, enabling real-time exchange of various information about system dynamics, sensor outputs, and control decisions. The connection between cyberspace and physical processes results in the exposure of industrial production information to unprecedented security risks. It is imperative to develop suitable strategies to ensure cyber security while meeting basic performance *** the perspective of control engineering, this review presents the most up-to-date results for privacy-preserving filtering,control, and optimization in industrial cyber-physical systems. Fashionable privacy-preserving strategies and mainstream evaluation metrics are first presented in a systematic manner for performance evaluation and engineering *** discussion discloses the impact of typical filtering algorithms on filtering performance, specifically for privacy-preserving Kalman filtering. Then, the latest development of industrial control is systematically investigated from consensus control of multi-agent systems, platoon control of autonomous vehicles as well as hierarchical control of power systems. The focus thereafter is on the latest privacy-preserving optimization algorithms in the framework of consensus and their applications in distributed economic dispatch issues and energy management of networked power systems. In the end, several topics for potential future research are highlighted.

关键词： industrial cyber-physical systems privacy preservation distributed control distributed optimization power systems

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Exceptional functionalized dual-acidic ionic liquid: High-efficiency catalytic reaction medium for oxidation desulfurization

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Petroleum science 2025年第1期22卷 492-507页

作者： Ran Liu Chang Wang Qiang Yang Jing-Ran Yang Chen Liu Liberty Mguni Xin-Ying Liu Ya-Li Yao Fa-Tang Li Institute for Catalysis and Energy Solutions University of South Africa International Joint Laboratory of New Energy College of Chemistry and Pharmaceutical Engineering Hebei University of Science and Technology Hebei Key Laboratory of Photoelectric Control on Surface and Interface College of Science Hebei University of Science and Technology

The development of highly active functionalized ionic liquids（ILs） as both extractants and catalysts for use in achieving deep desulfurization continues to pose *** this study,a highly efficient oxidative desulfurization system was constructed,composed of dual-acidic ionic liquids（DILs） and *** investigation results of four DILs prepared from different metal chlorides（[HSO3C3NEt3]ClMnCln,MnCl_n=AlCl3,ZnCl2,CuCl2,FeCl3） in oxidative desulfurization showed that [HSO3C3NEt3]Cl-AlCl3had an outstanding catalytic effect and significantly promoted the oxidation of *** a0.2 g [HSO3C3NEt3]Cl-AlCl3,the removal rate of dibenzothiophene（DBT） reached 100% in 10 mL model oil under mild conditions at 55℃ for 20 *** key is its ability to induce the dismutation of superoxide anions（·O2-）,which facilitates the generation of singlet oxygen（1O2）.The efficient oxidation of DBT is accomplished through a predominantly1O2-mediated non-radical mechanism.[HSO3C3NEt3]ClAlCl3serves as a favorable medium for contact to be made between1O2and sulfides,which indicates an efficient catalytic-adsorption synergy.

关键词： Dual-acidic ionic liquid Catalysis Oxidation desulfurization Reactive oxygen species

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