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research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie Tian Qinghe Cui Beijing Advanced Innovation Center for materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

AIE probes towards biomolecules: the improved selectivity with the aid of graphene oxide

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Science China Chemistry 2015年第12期58卷 1800-1809页

作者： Qianqian Li Zhen Li Hubei Key Laboratory on Organic and polymeric Opto-Electronic materials

Fluorescence probes with aggregation-induced emission(AIE) property have attracted much research interest and have been identified as novel fluorescence biosensors with "turn-on" response. In this mini review, we present an overview of the recent work on improving the selectivity of AIE biosensors with the aid of graphene oxide(GO), according to the displacement strategy.

关键词： aggregation-induced emission biosensor selectivity graphene oxide displacement strategy

Studies on the Surface Interaction and Dispersity of Silver Nanoparticles in Organic Solvents

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Chinese Physics Letters 2000年第9期17卷 697-699页

作者： ZENG Rong RONG Min-Zhi ZHANG Ming-qiu ZENG Han-Min institute of materials Science Key Laboratory of Polymeric Composite&FYinctional Materials of the Ministry of Education of ChinaZhongshan UniversityGuangzhou 510275

Silver nanoparticles with different sizes have been prepared by microemulsion and have been surface-modified with *** spin resonance results indicate that there exist some kinds of surface local paramagnetic sites in capped Ag nanoparticles,which leads to the relation between electron spin resonance parameters and particle size deviating from Kawabata's *** a strong interaction between nanosilver and *** smaller the particles,the stronger the *** electron microscopy and ultravilolet-visible absorption spectra confirmed that Ag nanoparticles are well dispersed in chloroform,implying that a good dispersity of Ag nanoparticles in polymers could be obtained by means of solution mixing by using chloroform as the solvent.

关键词： interaction. chloroform silver

Effect of Bi/Si Ratio of BiBSi Glass on Its Structure,Properties and Laser Sealing Shear Strength for Vacuum Glazing

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Journal of Wuhan University of Technology(materials Science) 2025年第1期 13-24页

作者：刘伟 JIAO Jinxu LUO Dusha ZHOU Junjie SHI Lifen WANG Weiwei LI Changqing WANG Peng XIONG Dehua 李宏 State Key Laboratory of Silicate materials for Architectures Wuhan University of Technology Silica-Based materials Laboratory of Anhui Province CNBM Research Institute for Advanced Glass Materials Group Co. Ltd State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co. Ltd

The low-melting glass of Bi2O3-B2O3-SiO2（BiBSi） system was used for the first time for laser sealing of vacuum *** the condition of constant boron content,how the structure and properties vary with Bi/Si ratio in low-melting glass was *** addition,the relationships between laser power,low-melting glass solder with different Bi/Si ratios and laser sealing shear strength were *** results show that a decrease in the Bi/Si ratio can cause a contraction of the glass network of the low-melting glass,leading to an increase of its characteristic temperature and a decrease of its coefficient of thermal *** laser sealing,the copper ions in the low-melting glass play an endothermic role.A change in the Bi/Si ratio will affect the valence state transition of the copper ions in the low-melting *** absorbance of the low-melting glass does not follow the expected correlation with the Bi/Si ratio,but shows a linear correlation with the content of divalent copper *** greater the concentration of divalent copper ions,the greater the absorbance of the low-melting glass,and the lower the laser power required for laser *** shear strength of the low melting glass solder after laser sealing was tested,and it was found that the maximum shear strength of Z1 glass sample was the highest up to 2.67 MPa.

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“Zero‑Strain” NiNb_(2)O_(6) Fibers for All‑Climate Lithium Storage

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Nano-Micro Letters 2025年第1期17卷 348-360页

作者： Yan Zhao Qiang Yuan Liting Yang Guisheng Liang Yifeng Cheng Limin Wu Chunfu Lin Renchao Che College of Physics Donghua UniversityShanghai 201620People’s Republic of China School of materials Science and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanced materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-climate Li^(+)-storage anode material due to their fast charge transport,large specific capacities,and resistance to electrolyte ***,their moderate unit-cellvolume expansion(generally 5%–10%)during Li^(+)storage causes unsatisfactory long-term ***,“zero-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with comprehensively good electrochemical *** Li^(+)storage,the expansion of electrochemical inactive NiO_(6) octahedra almost fully offsets the shrinkage of active NbO_(6) octahedra through reversible O *** superior volume-accommodation capability of the NiO_(6) layers guarantees the“zero-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the excellent cyclability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%capacity retention after 1000//2000//1000 cycles at 10C and 25//−10//60℃).This NiNb_(2)O_(6) material further exhibits a large reversible capacity(300//184//318 mAh g−1 at 0.1C and 25//−10//60℃)and outstanding rate performance(10 to 0.5C capacity percentage of 64.3%//50.0%//65.4%at 25//−10//60℃).Therefore,the NiNb_(2)O_(6) fibers are especially suitable for large-capacity,fast-charging,long-life,and all-climate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-strain”mechanism Electrochemical property Harsh-temperature operation Operando characterization

Self-healing carrageenan-driven polyacrylamide hydrogels for strain sensing

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Science China(Technological Sciences) 2020年第12期63卷 2677-2686页

作者： FAN ZiWen DUAN LiJie GAO GuangHui polymeric and Soft materials Laboratory School of Chemistry and Life Science and Advanced Institute of Materials ScienceChangchun University of TechnologyChangchun 130012China

Conductive hydrogels have attached considerable attention due to their good stretchability,excellent conductivity when they are applied in soft electronics. However,to fabricate a flexible hydrogel sensor with excellent toughness and good self-healing properties remains a challenge. In this work,we assembled a dual physical-crosslinking(DPC) ionic conductive polyacrylamide/carrageenan double-network(DN) hydrogel. This hydrogel has excellent fracture tensile stress and toughness,and demonstrates rapid self-recovery and self-healing ability due to the unique dual physical-crosslinking structures. Besides,the hydrogel is highly conductive by adding some conductive ions. As a result,the hydrogel-based sensor can stably detect human motions and physiological signals. The work provides novel ideas for the development of flexible sensing devices.

关键词： hydrogel self-healing carrageenan polyacrylamide strain sensing

液晶弹性体单元协同驱动作为功能设计平台（英文）

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Science China materials 2025年第1期 236-243页

作者：王瑾宇 Hari Krishna Bisoyi 黄银亮徐艺艺张新芳范奔杨涛刘志洋黄帅李全 institute of Advanced materials and School of Chemistry and Chemical Engineering Southeast University materials Science Graduate Program Kent State University

未来软体机器人设备的复杂性远超当前标准,因而需要建立新的设计方法.该方法需整合多个系统,以同步软执行器的运动和信号响应,从而增强柔性设备的智能性.本文提出了一个基于液晶弹性体(LCE)单元的平台,该平台将单元整合成组,以创建可扩...

未来软体机器人设备的复杂性远超当前标准,因而需要建立新的设计方法.该方法需整合多个系统,以同步软执行器的运动和信号响应,从而增强柔性设备的智能性.本文提出了一个基于液晶弹性体(LCE)单元的平台,该平台将单元整合成组,以创建可扩展的功能.每个单元的行为都是一个柔性驱动模块,可以在特定、稳定和可控的模式下进行双轴膨胀.通过以不同的方式组织LCE单元,分别实现了自适应性的软夹持器、信息处理的半加器和可调的声子带隙.这表明通过精巧地重新组装这些单元,可以在结构和功能上具备高度的可重构性和可扩展性.这种设计策略有望整合传统软执行器无法具备的多种功能,为开发智能软机器人提供平台.

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Ionic conductive hydrogels toughened by latex particles for strain sensors

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Science China(Technological Sciences) 2021年第4期64卷 827-835页

作者： CHANG JingYu ZHANG ZhiXin JIA Fei GAO GuangHui polymeric and Soft materials L aboratory School of Chemical Engineering and Advanced Institute of Materials ScienceChangchun University of TechnologyChangchun 130012China

Conductive hydrogels have attracted tremendous attention due to their excellent softness and stretchability as wearable strain sensing ***,most of hydrogel-based strain sensors suffered from poor self-recoverability and fatigue resistance,resulting in significant decrease of strain sensitivity after ***,a soft and flexible wearable strain sensor is prepared by using an ionic conductive hydrogel with latex particles as physical cross-linking *** dynamic physical cross-linking structure can effectively dissipate energy through disruption and reconstruction of molecular segments,thereby imparting excellent stretchability,self-recoverability and fatigue *** addition,the hydrogel exhibits excellent strain-sensitive resistance changes,which enables it to be assembled as a wearable sensor to monitor human *** a result,the hydrogel strain sensor can provide precise feedback for a wide range of human activities,including large-scale joint bending and tiny ***,the tough ionic conductive hydrogel would be widely applied in electronic skin,medical monitoring and artificial intelligence.

关键词： ionic conductive hydrogel strain sensor self-recovery fatigue resistance

Self-assembling organomodified Co/Al based layered double hydroxides (LDH) via one-step route

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中国有色金属学会会刊：英文版 2009年第6期19卷 1479-1482页

作者：王德义 A.LEUTERITZ U.WAGENKNECHT G.HEINRICH Center for Degradable and Flame-Retardant polymeric materials(ERCEPM-MoE) College of ChemistrySichuan University State Key Laboratory of Polymer materials Engineering Sichuan University Leibniz institute of Polymer research

The preparation of self-assembling organomodified Co/Al-layered double hydroxide(LDH)via one-step route was studied. A common surfactant,sodium dodecylbenzenesulfonate(DBS),was employed as an organic *** behavior and structure of self-assembled intercalated organic Co/Al-LDH were investigated by FTIR,SEM,WAXS,element analysis and *** upon the WAXS results and calculation by Bragg equation,the interlayer distance(d value)for organic Co/Al-LDH is enlarged from 0.75 nm to 3.10 nm,showing that the self-assembling behavior has been carried out *** the observation from SEM, the product shows the morphology of organic Co/Al-LDH of a layered *** addition,FTIR,element analysis and TGA analysis show that the modifier is intercalated into the gallery of the Co/*** organic modification for nanofiller is deemed to be necessary before applying it into polymer,the successful preparation of organomodified Co/Al-LDH will be significantly beneficial to the preparation and investigation of novel polymer/LDH nanocomposite.

关键词：层状双金属氢氧化物自组装行为有机改性铝形态有机钴 LDH 基础烷基苯磺酸钠