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PriChain: Efficient Privacy-Preserving Fine-Grained Redactable Blockchains in Decentralized Settings

Chinese Journal of Electronics 2025年第1期34卷 82-97页

作者： Hongchen Guo Weilin Gan Mingyang Zhao Chuan Zhang Tong Wu Liehuang Zhu Jingfeng Xue School of Computer science and technology Beijing Institute of Technology School of Cyberspace science and technology Beijing Institute of Technology School of Computer and Communication Engineering University of Science and Technology Beijing

Recently, redactable blockchain has been proposed and leveraged in a wide range of real systems for its unique properties of decentralization, traceability, and transparency while ensuring controllable on-chain data redaction. However, the development of redactable blockchain is now obstructed by three limitations, which are data privacy breaches, high communication overhead, and low searching efficiency, respectively. In this paper, we propose PriChain, the first efficient privacy-preserving fine-grained redactable blockchain in decentralized settings. PriChain provides data owners with rights to control who can read and redact on-chain data while maintaining downward compatibility, ensuring the one who can redact will be able to read. Specifically, inspired by the concept of multi-authority attribute-based encryption, we utilize the isomorphism of the access control tree, realizing fine-grained redaction mechanism, downward compatibility, and collusion resistance. With the newly designed structure, PriChain can realize O（n） communication and storage overhead compared to prior O（n2） schemes. Furthermore, we integrate multiple access trees into a tree-based dictionary, optimizing searching efficiency. Theoretical analysis proves that PriChain is secure against the chosen-plaintext attack and has competitive complexity. The experimental evaluations show that PriChain realizes 10× efficiency improvement of searching and 100× lower communication and storage overhead on average compared with existing schemes.

关键词： Resistance Access control Data privacy Dictionaries Blockchains Encryption Complexity theory Usability Protection

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Dual-phase interface engineering via parallel modulation strategy for highly reversible Zn metal batteries

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Journal of Energy Chemistry 2025年第2期101卷 163-174页

作者： Zhean Bao Yang Wang Kun Zhang Guosheng Duan Leilei Sun Sinan Zheng Bin Luo Zhizhen Ye Jingyun Huang School of Materials science and Engineering State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University institute of Wenzhou Zhejiang University institute of Thermal science and Power Systems Zhejiang University Longmen Laboratory of Luoyang

The reversibility and stability of aqueous Zn metal batteries（AZMBs） are largely limited by Zn dendrites and interfacial parasitic ***,we propose a parallel modulation strategy to boost the reversibility of the Zn anode by introducing N,N,N',N'-tetramethylchloroformamidinium hexafluorophosphate（TCFH） as an additive in the *** is composed of PF6-and TN+with opposite ***6-can spontaneously induce the in-situ generation of ZnF2solid electrolyte interface（SEI） on the anode,which can improve the transport kinetics of Zn2+at the interface,thus promoting the rapid and uniform deposition of Zn as well as inhibiting the growth of *** addition,TN+is enriched at the anode surface during Zn deposition through the anchoring effect,which brings a reconfiguration of the ion/molecule *** anchored-TN+reduces the concentrations of H2O and SO42-,sufficiently restraining the parasitic *** to the dual-phase interface engineering constructed of PF6-and TN+in parallel,the symmetric cell with the proposed electrolyte survives long cycling stability over750 h at 20 mA cm-2,10 mAh *** study offers a distinct viewpoint to the multidimensional optimization of Zn anodes for high-performance AZMBs.

关键词： Anchoring effect Aqueous Zn metal batteries Electrolyte additive Solid electrolyte interface Zn anode

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Design and Application of Turbine Cascade Partitioned Endwall Profiling

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Journal of Thermal science 2025年第1期34卷 110-128页

作者： ZENG Fei JIANG Ruiqi XUE Xingxu DU Wei LUO Lei ZHOU Xun AECC Hunan Aviation Powerplant Research institute Zhuzhou 412002China School of Energy science and technology Harbin Institute of TechnologyHarbin 150001China science and technology on Diesel Engine Turbocharging Laboratory China North Engine Research InstituteTianjin 300270China

The influence of partitioned profiling design based on a large-pitch highly loaded cascade is studied by numerical *** partitioned profile is mainly composed of a pressure-side convex structure near the leading edge and a suction-side convex structure at the midstream and downstream sides of the *** influence of the change in the vertex axial position and peak value of the B-line on the secondary flow control is *** this paper,air(ideal gas)is selected as the flow *** average static pressure at the outlet and the average total temperature at the inlet are kept *** γ-θ is used as the turbulence *** results show that the pressure-side convex structure suppresses the spanwise and pitchwise migration of the inlet flow by adjusting the static pressure distribution of the flow field,so the development of the pressure-side leg of the horseshoe vortex is effectively *** suction-side convex structure adjusts the static pressure distribution of the flow field and increases the included angle between the cross-flow and suction surface,so the accumulation of low-momentum fluid,the development of a corner vortex and the flow separation at the trailing edge of the suction-side surface are all suppressed near the endwall-suction ***,the energy loss coefficient of the large-pitch highly loaded cascade is decreased from 0.0564 to 0.0485,representing a 25% reduction in secondary flow losses.

关键词： large-pitch highly loaded cascade highly loaded design non-axisymmetrical endwall design secondary flow control partitioned endwall profiling

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Interface compatibility between sulfide solid electrolytes and Ni-rich oxide cathode materials:Factors,modification,perspectives

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Journal of Energy Chemistry 2025年第2期101卷 233-262页

作者： Tianwen Yang Haijuan Pei Haijian Lv Shijie Lu Qi Liu Daobin Mu Beijing Key Laboratory of Environmental science and Engineering School of Materials Science an Engineering Beijing Institute of Technology State Key Laboratory of Space Power-Sources technology Shanghai Institute of Space Power-Sources

All-solid-state batteries(ASSBs) assembled with sulfide solid electrolytes(SSEs) and nickel(Ni)-rich oxide cathode materials are expected to achieve high energy density and safety,representing potential candidates for the next-generation energy storage ***,interfacial issues between SSEs and Nirich oxide cathode materials,attributed to space charge layer,interfacial side reactions,and mechanical contact failure,significantly restrict the performances of *** interface degradation is closely related to the components of the composite cathode and the process of electrode *** on the influencing factors of interface compatibility between SSEs and Ni-rich oxide cathode,this article systematically discusses how cathode active materials(CAMs),electrolytes,conductive additives,binders,and electrode fabrication impact the interface *** addition,the strategies for the compatibility modification are ***,the challenges and prospects of intensive research on the degradation and modification of the SSE/Ni-rich cathode material interface are *** review is intended to inspire the development of high-energy-density and high-safety all-solid-state batteries.

关键词： All–solid–state batteries Influencing factors Interface compatibility Ni–rich oxide cathode Sulfide solid electrolyte

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Enhancing micro-scale SiOx anode durability:Electro-mechanical strengthening of binder networks via anchoring carbon nanotubes with carboxymethyl cellulose

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Journal of Energy Chemistry 2025年第2期101卷 23-33页

作者： Chaeyeon Ha Jin Kyo Koo Jun Myoung Sheem Young-Jun Kim SKKU Advanced institute of Nano technology (SAINT) Sungkyunkwan University Department of Nano science and technology Sungkyunkwan University Advanced Center for Convergence Energy Storage System Sungkyunkwan University SKKU institute of Energy science and technology (SIEST) Sungkyunkwan University

With the increasing prevalence of lithium-ion batteries（LIBs） applications,the demand for high-capacity next-generation materials has also *** currently considered a promising anode material due to its exceptionally high capacity for ***,the significant volumetric changes of SiOxduring cycling and its initial Coulombic efficiency（ICE） complicate its use,whether alone or in combination with graphite *** this study,a three-dimensional conductive binder network with high electronic conductivity and robust elasticity for graphite/SiOxblended anodes was proposed by chemically anchoring carbon nanotubes and carboxymethyl cellulose binders using tannic acid as a chemical *** addition,a dehydrogenation-based prelithiation strategy employing lithium hydride was utilized to enhance the ICE of *** combination of these two strategies increased the CE of SiOxfrom 74% to87% and effectively mitigated its volume expansion in the graphite/SiOxblended electrode,resulting in an efficient electron-conductive binder *** led to a remarkable capacity retention of 94% after30 cycles,even under challenging conditions,with a high capacity of 550 mA h g-1and a current density of 4 mA ***,to validate the feasibility of utilizing prelithiated SiOxanode materials and the conductive binder network in LIBs,a full cell incorporating these materials and a single-crystalline Ni-rich cathode was *** cell demonstrated a～27.3% increase in discharge capacity of the first cycle(～185.7 mA h g-1) and exhibited a cycling stability of 300 ***,this study reports a simple,feasible,and insightful method for designing high-performance LIB electrodes.

关键词： Lithium-ion batteries SiO x anode Blended anode Carbon nanotubes Carboxymethyl cellulose Conductive binder network

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Polymer Fibers Based on Dynamic Covalent Chemistry

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Chinese Journal of Polymer science 2025年第2期43卷 245-260页

作者： Luzhi Zhang Xiaozhuang Zhou Xinhong Xiong Jiaxi Cui Yangtze Delta Region institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou313001China institute of Fundamental and Frontier sciences University of Electronic Science and Technology of ChinaChengdu611731China

Polymer fibers are an important class of materials throughout human history,evolving from natural fibers such as cotton and silk to modern synthetic fibers such as nylon and *** the advancement of materials science,the development of new fibers is also *** fibers based on dynamic covalent chemistry have attracted widespread attention due to their unique reversibility and *** covalent chemistry has shown great potential in improving the spinnability of materials,achieving green preparation of fibers,and introducing self-healing,recyclability,and intelligent response properties into *** this review,we divide these fiber materials based on dynamic covalent chemistry into monocomponent fibers,composite fibers,and fiber *** preparation methods,structural characteristics,functional properties,and application performance of these fibers are *** application potential and challenges of fibers based on dynamic covalent chemistry are discussed,and their future development trends are prospected.

关键词： Dynamic covalent chemistry Monocomponent fibers Composite fibers Fiber membranes

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 128-135页

作者： Xiao Xiang Feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation institute Huazhong University of Science and TechnologyWuhan 430074China

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of L_(x) and/or L_(y),we unambiguously demonstrate the first-order Möbius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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Optimizing local search-based partial MaxSAT solving via initial assignment prediction

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science China(Information sciences) 2025年第2期68卷 59-73页

作者： Chanjuan LIU Guangyuan LIU Chuan LUO Shaowei CAI Zhendong LEI Wenjie ZHANG Yi CHU Guojing ZHANG School of Computer science and technology Dalian University of Technology School of Software Beihang University institute of Software Chinese Academy of Sciences School of Computer science Peking University

Partial maximum satisfiability(PMS) is a significant generalization of Boolean satisfiability(SAT) and maximum satisfiability(MaxSAT), by introducing hard clauses and soft clauses. Compared with SAT and MaxSAT, the PMS problem has more real-world applications where both hard and soft constraints are involved. Local search is an effective incomplete method for solving PMS and is useful for important domains where good-quality solutions are desired within reasonable *** local search PMS solvers, the approach for initial assignment generation is crucial because its effectiveness significantly affects practical performance. In this study, we propose a novel initial assignment prediction approach, called InitPMS. When predicting an assignment for PMS, InitPMS considers the specific structure of PMS instances, i.e., distinguishing hard and soft clauses. Our experiments on extensive PMS instances from MaxSAT evaluations(MSEs) 2020 and 2021 show that InitPMS significantly boosts the performance of five state-of-the-art local search PMS solvers, demonstrating its generality. In addition,our results indicate that incorporating InitPMS could improve the performance of one of the best incomplete PMS solvers in MaxSAT Evaluation 2021, indicating that InitPMS might help advance the state of the art in PMS solving.

关键词： MaxSAT local search initial assignment incomplete method assignment prediction

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Bioinspired smart dual-layer hydrogels system with synchronous solar and thermal radiation modulation for energy-saving all-season temperature regulation

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Journal of Energy Chemistry 2025年第2期101卷 175-190页

作者： Meng-Chen Huang Chao-Hua Xue Zhongxue Bai Jun Cheng Yong-Gang Wu Chao-Qun Ma Li Wan Long Xie Hui-Di Wang Bing-Ying Liu Xiao-Jing Guo College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology School of Manufacture science and Engineering Key Laboratory of Testing Technology for Manufacturing Process Ministry of Education Southwest University of Science and Technology School of Life science and Engineering Southwest University of Science and Technology Northwest institute for Nonferrous Metal Research Shaanxi Key Laboratory of Biomedical Metal Materials

All-season thermal management with zero energy consumption and emissions is more crucial to global decarbonization over traditional energy-intensive cooling/heating ***,the static single thermal management for cooling or heating fails to self-regulate the temperature in dynamic seasonal temperature ***,inspired by the dual-temperature regulation function of the fur color changes on the backs and abdomens of penguins,a smart thermal management composite hydrogel(PNA@H-PM Gel) system was subtly created though an "on-demand" dual-layer structure design *** PNA@H-PM Gel system features synchronous solar and thermal radiation modulation as well as tunable phase transition temperatures to meet the variable seasonal thermal requirements and energy-saving demands via self-adaptive radiative cooling and solar heating ***,this system demonstrates superb modulations of both the solar reflectance(ΔR=0.74) and thermal emissivity(ΔE=0.52) in response to ambient temperature changes,highlighting efficient temperature regulation with average radiative cooling and solar heating effects of 9.6℃ in summer and 6.1℃ in winter,***,compared to standard building baselines,the PNA@H-PM Gel presents a more substantial energy-saving cooling/heating potentials for energy-efficient buildings across various regions and *** novel solution,inspired by penguins in the real world,will offer a fresh approach for producing intelligent,energy-saving thermal management materials,and serve for temperature regulation under dynamic climate conditions and even throughout all seasons.

关键词： Energy-saving Radiative cooling Self-adaptive thermal management Spectral modulation Thermochromic hydrogel

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Perspectives on additive manufacturing for warhead applications

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Defence technology(防务技术) 2025年第1期43卷 225-251页

作者： Hao Xue Qiang Zhou Chuan Xiao Guangyan Huang State Key Laboratory of Explosion science and technology Beijing Institute of TechnologyBeijing 100081China Ordnance science and Research Academy of China Beijing 100089China Beijing institute of technology Chongqing Innovation Center Chongqing 401120China

According to different damage modes,warheads are roughly divided into three types:fragmentation warheads,shaped charge warheads,and penetrating *** to limitations in material and structural manufacturing,traditional manufacturing methods make it difficult to fully utilize the damage ability of the *** manufacturing(AM)technology can fabricate complex structures,with classified materials composition and customized components,while achieving low cost,high accuracy,and rapid production of the *** maturity of AM technology has brought about a new round of revolution in the field of *** this paper,we first review the principles,classifications,and characteristics of different AM *** development trends of AM technologies are pointed out,including multi-material AM technology,hybrid AM technology,and smart AM *** our survey,PBF,DED,and EBM technologies are mainly used to manufacture warhead damage *** and DIW technologies are mainly used to manufacture warhead ***,the research on the application of AM technology in three types of warhead and warhead charges was reviewed and the existing problems and progress of AM technologies in each warhead were ***,we summarized the typical applications and look forward to the application prospects of AM technology in the field of warheads.

关键词： Additive manufacturing Fragmentation warhead Shaped charge warhead Penetrating warhead Warhead charge

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