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Organic Radical-Boosted Ionic Conductivity in Redox Polymer Electrolyte for Advanced Fiber-Shaped Energy Storage Devices
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作者 Jeong-Gil Kim Jaehyoung Ko +8 位作者 Hyung-Kyu Lim Yerin Jo Hayoung Yu Min Woo Kim Min Ji Kim Hyeon Su Jeong Jinwoo Lee Yongho Joo Nam Dong Kim 《Nano-Micro Letters》 2025年第8期202-218,共17页
Fiber-shaped energy storage devices(FSESDs)with exceptional flexibility for wearable power sources should be applied with solid electrolytes over liquid electrolytes due to short circuits and leakage issue during defo... Fiber-shaped energy storage devices(FSESDs)with exceptional flexibility for wearable power sources should be applied with solid electrolytes over liquid electrolytes due to short circuits and leakage issue during deformation.Among the solid options,polymer electrolytes are particularly preferred due to their robustness and flexibility,although their low ionic conductivity remains a significant challenge.Here,we present a redox polymer electrolyte(HT_RPE)with 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl(HT)as a multi-functional additive.HT acts as a plasticizer that transforms the glassy state into the rubbery state for improved chain mobility and provides distinctive ion conduction pathway by the self-exchange reaction between radical and oxidized species.These synergetic effects lead to high ionic conductivity(73.5 mS cm−1)based on a lower activation energy of 0.13 eV than other redox additives.Moreover,HT_RPE with a pseudocapacitive characteristic by HT enables an outstanding electrochemical performance of the symmetric FSESDs using carbon-based fiber electrodes(energy density of 25.4 W h kg^(−1) at a power density of 25,000 W kg^(−1))without typical active materials,along with excellent stability(capacitance retention of 91.2%after 8,000 bending cycles).This work highlights a versatile HT_RPE that utilizes the unique functionality of HT for both the high ionic conductivity and improved energy storage capability,providing a promising pathway for next-generation flexible energy storage devices. 展开更多
关键词 Redox polymer electrolyte Hydroxy-TEMPO Ionic conductivity Self-exchange reaction fiber-shaped energy storage devices
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Recent progress of fiber-shaped batteries towards wearable application 被引量:1
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作者 LI Yuan WANG Yi-bo +7 位作者 ZHANG Hao ZHAO Peng-cheng CHEN Long MA Jun CHEN Xi-bang LIN Zhi-hong QIU Jing-yi CAO Gao-ping 《Journal of Central South University》 SCIE EI CAS CSCD 2022年第9期2837-2856,共20页
Rapid development of portable or wearable devices, which is inspired by requirements of instant messaging,health monitoring and handling official business, urgently demands more tiny, flexible and light power sources.... Rapid development of portable or wearable devices, which is inspired by requirements of instant messaging,health monitoring and handling official business, urgently demands more tiny, flexible and light power sources. Fibershaped batteries explored in recent years become a prospective candidate to satisfy these demands. With 1D architecture,the fiber-shaped batteries could be adapted to various deformations and integrated into soft textile and other devices.Numerous researches have been reported and achieved huge promotion. To give an overview of fiber-shaped batteries,we summarized the development of fiber-shaped batteries in this review, and discussed the structure and materials in fiber-shaped batteries. The flexibility of batteries with the potential application of the batteries was also exhibited and showed the future perspective. Finally, challenges in this field were discussed, hoping to reveal research direction towards further development of fiber-shaped batteries. 展开更多
关键词 flexible electronic device fiber-shaped battery flexible electrodes wearable application
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Fiber-shaped Supercapacitors:Advanced Strategies toward High-performances and Multi-functions
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作者 Jie Yang Xue-Lian Lia +2 位作者 Jing-Wen Zhou Bin Wang Jian-Li Cheng 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2020年第5期403-422,I0004,共21页
Fiber-shaped supercapacitors(FSSCs)show great potential in portable and wearable electronics due to their unique advantages of high safety,environmental friendliness,high performances,outstanding flexibility and integ... Fiber-shaped supercapacitors(FSSCs)show great potential in portable and wearable electronics due to their unique advantages of high safety,environmental friendliness,high performances,outstanding flexibility and integrability.They can directly act as the power sources or be easily integrated with other flexible devices to constitute self-powered and sustainable energy suppliers,providing excellent adaptability to irregular surfaces.This review mainly summarizes the recently reported works of FSSCs including preparation methods of various fiber electrodes,construction strategies of FSSCs and multi-functional device integrations,exploration of reaction mechanisms and strategies to improve the electrochemical performance and provision of suggestions on further designing and optimization of FSSCs.Meanwhile,it shares our perspectives on challenges and opportunities in this field,shedding light on the development of high-performance fiber-shaped supercapacitors with multifunctions. 展开更多
关键词 fiber-shaped supercapacitor Performance improvement Multi-function device Integrated electronics
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A Study on the Impact of Chemical Structure on the Evolution of Aggregate Structure in Fiber-shaped High Density Polyethylene Vitrimer
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作者 Bing Wang Yuan-Chu Gao +1 位作者 Hai Wang Hui Niu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2024年第10期1557-1565,I0013,共10页
Vitrimers have emerged as a prominent research area in the field of polymer materials.Most of the studies have focused on synthesizing polymers with versatile dynamic crosslinking structures,while the impact of chemic... Vitrimers have emerged as a prominent research area in the field of polymer materials.Most of the studies have focused on synthesizing polymers with versatile dynamic crosslinking structures,while the impact of chemical structure on aggregate structure of vitrimers,particularly during polymer processing,remains insufficiently investigated.The present study employed commercial maleic anhydride-grafted-high density polyethylene(M-g-HDPE)as the matrix and hexanediol as the crosslinker to facilely obtain fiber-shaped HDPE vitrimers through a reaction extrusion and post-drawing process.Through chemical structure characterization,morphology observation,thermal and mechanical properties investigation,as well as aggregate structure analysis,this work revealed the influence of dynamic bonds on the formation of aggregate structures during fiber-shaped vitrimers processing.A small amount of dynamic bonds in HDPE restricts the motion of PE chain during melt-extruding and post-drawing,resulting in a lower orientation of the PE chains.However,lamellar growth and fibril formation during post-drawing at high temperature are enhanced to some extent due to the competition between dynamic bond and chain relaxation.The uneven morphology of fibershaped HDPE vitrimers can be attributed to the stronger elastic effect brought by dynamic bonding,which plays a more dominant role in determining the mechanical properties of fiber-shaped vitrimers compared to aggregate structure.Abstract Vitrimers have emerged as a prominent research area in the field of polymer materials.Most of the studies have focused on synthesizing polymers with versatile dynamic crosslinking structures,while the impact of chemical structure on aggregate structure of vitrimers,particularly during polymer processing,remains insufficiently investigated.The present study employed commercial maleic anhydride-grafted-high density polyethylene(M-g-HDPE)as the matrix and hexanediol as the crosslinker to facilely obtain fiber-shaped HDPE vitrimers through a reaction extrusion and post-drawing process.Through chemical structure characterization,morphology observation,thermal and mechanical properties investigation,as well as aggregate structure analysis,this work revealed the influence of dynamic bonds on the formation of aggregate structures during fiber-shaped vitrimers processing.A small amount of dynamic bonds in HDPE restricts the motion of PE chain during melt-extruding and post-drawing,resulting in a lower orientation of the PE chains.However,lamellar growth and fibril formation during post-drawing at high temperature are enhanced to some extent due to the competition between dynamic bond and chain relaxation.The uneven morphology of fibershaped HDPE vitrimers can be attributed to the stronger elastic effect brought by dynamic bonding,which plays a more dominant role in determining the mechanical properties of fiber-shaped vitrimers compared to aggregate structure. 展开更多
关键词 High density polyethylene vitrimer fiber-shaped Aggregate structures Transesterification reaction
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Progress in fiber-shaped zinc batteries:From structure,manufacturing,optimization to application 被引量:1
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作者 Chongyang Luo Yanyan Shao +7 位作者 Zhongwei Jiang Man Pang Ziqing Yao Yujie Li Weiwei Sun Yuanlong Shao Chunman Zheng Shuangke Liu 《InfoMat》 2025年第10期1-56,共56页
Fiber-shaped batteries,distinguished by their unique one-dimensional archi-tecture,offer ultra-high flexibility,remarkable stretchability,and excellent knittability,rendering them highly appealing as energy storage so... Fiber-shaped batteries,distinguished by their unique one-dimensional archi-tecture,offer ultra-high flexibility,remarkable stretchability,and excellent knittability,rendering them highly appealing as energy storage solutions for smart wearable fabrics.Among various fiber-shaped battery systems,aqueous zinc batteries stand out as one of the most promising candidates owing to their high specific capacity,inherent safety,and cost-effectiveness.However,the practical applicability of fiber-shaped zinc batteries(FZBs)is significantly hin-dered by challenges in scalable production,long-term operational stability,and seamless integration.Despite the growing interest in FZBs,a comprehen-sive and systematic review that critically examines the essential components,assembly configurations,manufacturing techniques,and performance-enhancing strategies is still lacking.This review aims to fill this gap by first summarizing the fundamental components of FZBs,including cathodes,anodes,electrolytes,current collectors,and encapsulation materials.It then compares the impact of various assembly configurations,including parallel,winding,coaxial,and weaving structures,on battery performance.Further-more,it provides an in-depth analysis of diverse manufacturing techniques for fiber electrodes,including dip-coating,hydrothermal synthesis,and electrode-position,as well as the assembly procedures ranging from manual to equipment-assisted and one-step assembly methods.In addition,this review highlights strategies for improving both electrochemical and wearable perfor-mance through material modification and structural design.It also under-scores the multifunctional applications of FZBs,such as thermosensitive,fluorescent,and sweat-driven variants,along with their potential in physiologi-cal sensing and environmental monitoring.Finally,it identifies the existing barriers to FZBs commercialization,including limited energy density,complex integration processes,and unclear internal mechanisms.Based on these insights,it proposes future research directions and development initiatives to advance the field of FZBs,thereby promoting their transition from laboratory prototypes to commercial products. 展开更多
关键词 application fiber-shaped zinc batteries MANUFACTURING optimization STRUCTURE
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Zinc-based fiber-shaped rechargeable batteries:Insights into structures,electrodes,and electrolytes
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作者 Xuan Zhang Hongcheng Zhang +9 位作者 Mengxiang Chen Jingqi Lu Evgeny Zhuravlev Jing Jiang Pin Liu Shengyang Dong Du Yuan Guoyin Zhu Lianbo Ma Yizhou Zhang 《Nano Research》 SCIE EI 2025年第1期278-293,共16页
The rapid evolution of flexible wearable electronics has spurred a growing demand for energy storage devices,characterized by low-cost manufacturing processes,high safety standards,exceptional electrochemical performa... The rapid evolution of flexible wearable electronics has spurred a growing demand for energy storage devices,characterized by low-cost manufacturing processes,high safety standards,exceptional electrochemical performance and robust mechanical properties.Among novel flexible devices,fiber-shaped batteries(FSBs)have emerged as prominent solutions exceptionally suited to future applications,owing to their unique one-dimensional(1D)architecture,remarkable flexibility,potential for miniaturization,adaptability to deformation and compatibility with the conventional textile industry.In the forefront research on fiber-shaped batteries,zincbased FSBs(ZFSBs)have garnered significant attentions,featured by the promising electrochemical properties of metallic Zn.This enthusiasm is driven by the impressive capacity of Zn(820 mAh·g^(-1))and its low redox potential(Zn/Zn^(2+):-0.76 V vs.standard hydrogen electrode).This review aims to consolidate recent achievements in the structural design,fabrication processes and electrode materials of flexible ZFSBs.Notably,we highlight three representative structural configurations:parallel type,twisted type and coaxial type.We also place special emphasis on electrode modifications and electrolyte selection.Furthermore,we delve into the promising development opportunities and anticipate future challenges associated with ZFSBs,emphasizing their potential roles in powering the next generation of wearable electronics. 展开更多
关键词 zinc-based batteries fiber-shape parallel type twisted type coaxial type
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Fiber-shaped aqueous battery:Design,advancements,and perspectives
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作者 Lijie Han Ying Ling +1 位作者 Fan Liu Qichong Zhang 《National Science Open》 2025年第6期181-222,共42页
To meet the demand for energy storage devices with high safety,excellent flexibility,and environmental compatibility in wearable electronic devices,fiber-shaped aqueous batteries(FABs)have become a key research direct... To meet the demand for energy storage devices with high safety,excellent flexibility,and environmental compatibility in wearable electronic devices,fiber-shaped aqueous batteries(FABs)have become a key research direction in the field of flexible energy storage.This paper systematically reviews the latest research progress of FABs.Firstly,it elaborates on their core working mechanisms,including the intercalation mechanism involving reversible insertion/extraction of charge carriers,the conversion mechanism characterized by changes in the oxidation state and phase of electrode materials and the deposition/dissolution mechanism of metal ions.Subsequently,it summarizes the design principles from three dimensions:electrode fabrication(surface coating,in-situ growth,thermal drawing,solution spinning),device architectures(parallel,twisted,coaxial,crossing),and performance evaluation metrics(energy density,specific capacity,long-term cycling stability,flexibility).Additionally,the paper combs the research breakthroughs of FABs based on Li^(+)/Na^(+),multivalent ions(Zn^(2+)/Mg^(2+)/Ca^(2+)/Al^(3+)),NH_(4)^(+),and alkaline systems,and introduces their applications in energy storage-photoelectric response integration,energy storage-sensing integration,and multi-device power supply.Finally,it points out the challenges,such as low utilization efficiency of electrode materials and poor interface stability,and looks forward to the development directions including intelligent materials,manufacturing technologies,and standardization construction,which provides references for the industrialization of FABs and the development of next-generation flexible energy storage technologies. 展开更多
关键词 flexible energy storage fiber-shaped aqueous batteries intrinsic safety multifunctional integration wearable electronics
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Recent Advances of Aqueous Fiber-Shaped Zn Ion Batteries
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作者 Ting Xiong Xiaowei Yan +3 位作者 Wenzhan Zhang Yaoxin Zhang Zhongchao Bai Huakun Liu 《Advanced Fiber Materials》 2025年第5期1383-1402,共20页
The rapid advancement of wearable electronics has driven significant interest in the development of wearable energy storage technologies.Among them,aqueous zinc ion batteries(ZIBs)have gained considerable attention as... The rapid advancement of wearable electronics has driven significant interest in the development of wearable energy storage technologies.Among them,aqueous zinc ion batteries(ZIBs)have gained considerable attention as promising candidates for portable and wearable applications.In particular,aqueous fiber-shaped ZIBs offer distinctive advantages,such as miniaturization,flexibility,and wearability,making them especially suitable for powering next-generation wearable devices.This review provides a comprehensive overview of the recent advances in aqueous fiber-shaped ZIBs,focusing on the fabrication of fiber-based electrodes and various battery configurations.In addition,we highlight the evolution of fiber-shaped ZIBs from single-function to multi-function systems,exploring their potential for diverse applications.The review also addresses the key challenges in this field and discusses future research directions to drive the further development of aqueous fiber-shaped ZIBs. 展开更多
关键词 Aqueous zinc ion batteries fiber-shaped device HIGH-PERFORMANCE Diverse applications
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The applications of carbon nanomaterials in fiber-shaped energy storage devices 被引量:1
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作者 Jingxia Wu Yang Hong Bingjie Wang 《Journal of Semiconductors》 EI CAS CSCD 2018年第1期48-56,共9页
As a promising candidate for future demand, fiber-shaped electrochemical energy storage devices, such as supercapacitors and lithium-ion batteries have obtained considerable attention from academy to industry. Carbon ... As a promising candidate for future demand, fiber-shaped electrochemical energy storage devices, such as supercapacitors and lithium-ion batteries have obtained considerable attention from academy to industry. Carbon nanomaterials, such as carbon nanotube and graphene, have been widely investigated as electrode materials due to their merits of light weight, flexibility and high capacitance. In this review, recent progress of carbon nanomaterials in flexible fiber-shaped energy storage devices has been summarized in accordance with the development of fibrous electrodes, including the diversified electrode preparation, functional and intelligent device structure, and large-scale production of fibrous electrodes or devices. 展开更多
关键词 carbon nanotube graphene fiber-shaped supercapacitor lithium ion battery
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聚甲醛(POM)纤维自密实混凝土(SCC)工作性和力学性能研究
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作者 贺晶晶 卢浩丹 +3 位作者 王攀菲 陈凌威 胡炜 吴文博 《混凝土与水泥制品》 2026年第1期37-42,共6页
研究了聚甲醛(POM)纤维的形状(圆柱状、扁平状)、长度(8 mm、12 mm)和掺量(0.8、1.2、1.6、2.0 kg/m^(3))对自密实混凝土(SCC)工作性和力学性能的影响。结果表明:POM纤维对SCC工作性的影响较小;随着POM纤维的掺量从0.8 kg/m^(3)增至2.0 ... 研究了聚甲醛(POM)纤维的形状(圆柱状、扁平状)、长度(8 mm、12 mm)和掺量(0.8、1.2、1.6、2.0 kg/m^(3))对自密实混凝土(SCC)工作性和力学性能的影响。结果表明:POM纤维对SCC工作性的影响较小;随着POM纤维的掺量从0.8 kg/m^(3)增至2.0 kg/m^(3),SCC的坍落扩展度、抗压强度和轴压强度均呈先升高后降低的趋势,T_(50)先降低后升高,抗折强度、轴拉强度和弹性模量均呈逐渐增大的趋势;总体上,当POM纤维掺量为1.2 kg/m^(3)时,对SCC工作性和力学性能的提升效果最好;与扁平状POM纤维相比,圆柱状POM纤维相对更适合掺入SCC中;考虑SCC工作性、抗压强度和轴压强度时,建议掺入8 mm长圆柱状POM纤维;考虑SCC轴拉强度和弹性模量时,建议掺入12 mm长圆柱状POM纤维。 展开更多
关键词 自密实混凝土(SCC) POM纤维 工作性 力学性能 纤维形状 纤维掺量 纤维长度
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纤维状水系锌离子电池的构建、性能优化与应用研究进展
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作者 赵松 王斌昊 +3 位作者 黄子熙 魏全茹 陈凤翔 胡沛英 《纺织工程学报》 2026年第1期37-53,共17页
纤维状电池凭借一维结构优势,展现出优异柔韧性、高拉伸性及针织集成能力,在智能可穿戴储能领域潜力巨大。其中,纤维状水系锌离子电池(FAZIBs)因高安全性、低成本及环境友好而备受关注。然而,其在可规模化制备、长期循环稳定性及与纺织... 纤维状电池凭借一维结构优势,展现出优异柔韧性、高拉伸性及针织集成能力,在智能可穿戴储能领域潜力巨大。其中,纤维状水系锌离子电池(FAZIBs)因高安全性、低成本及环境友好而备受关注。然而,其在可规模化制备、长期循环稳定性及与纺织体系兼容性方面仍面临挑战。文章系统综述了FAZIBs的基本构成、制备工艺、结构设计及性能调控,重点分析了正负极材料对电化学性能的影响,比较了涂覆、原位生长与湿法纺丝等典型制备策略,并评述了器件构型在能量输出和柔性适配上的差异。同时,探讨了FAZIBs在多功能集成及智能织物应用中的发展前景和当前发展面临的问题,旨在为FAZIBs的材料优化、器件设计及工程化应用提供参考,为其向大规模柔性电子与智能纺织系统的实用化推进提供理论与实践支持。 展开更多
关键词 纤维状水系锌离子电池 纤维电极 电极制备 器件结构 功能集成
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湿法纺柔性纤维状超级电容器的研究进展
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作者 吴红 李田幸子 +1 位作者 闫梦杰 刘呈坤 《纺织高校基础科学学报》 2026年第1期79-92,共14页
湿法纺丝技术因微观结构可控、工艺流程简单且易于规模化,已成为构建高性能柔性纤维状超级电容器的关键技术之一。本文系统综述了湿法纺丝在该领域的最新研究进展。首先概述了纤维状超级电容器的基本结构与储能机制;随后重点阐述基于湿... 湿法纺丝技术因微观结构可控、工艺流程简单且易于规模化,已成为构建高性能柔性纤维状超级电容器的关键技术之一。本文系统综述了湿法纺丝在该领域的最新研究进展。首先概述了纤维状超级电容器的基本结构与储能机制;随后重点阐述基于湿法纺丝的纤维电极微观结构调控策略及器件组装方式对性能的影响;进而探讨其在柔性储能中的具体应用与当前面临的挑战,包括如何平衡能量密度与柔韧性、提升器件在复杂环境下的长期稳定性,以及建立统一的性能评估体系等关键问题。最后提出纤维状超级电容器应朝着材料本征特性与多级纤维结构之间的协同调控、多功能准固态电解质与一体化集成技术,建立统一的标准化评估体系等方向发展,以期为推动新一代高性能可穿戴储能器件的设计与应用提供理论依据。 展开更多
关键词 湿法纺丝 纤维状超级电容器 纤维微观结构 器件构型 储能机理
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基于形状记忆镍钛合金纤维的保暖层调温结构设计
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作者 孙超 杨国伟 衣卫京 《毛纺科技》 北大核心 2026年第3期19-23,共5页
为了探索形状记忆合金应用于保暖层结构的设计方案,将镍钛合金(NiTi SMA)纤维制成包芯纱并开发致动织物保暖层,制作12种不同规格的织物模块用于致动性能与负载测试,对比选出变形与负载效果最好的织物,并设计优选模块的组合方案,进一步... 为了探索形状记忆合金应用于保暖层结构的设计方案,将镍钛合金(NiTi SMA)纤维制成包芯纱并开发致动织物保暖层,制作12种不同规格的织物模块用于致动性能与负载测试,对比选出变形与负载效果最好的织物,并设计优选模块的组合方案,进一步测试致动织物的电热性能,并设计封装方案。实验表明,丝径0.18mm、横向密度12线圈/(5 cm)、编织10行的织物模块具有更好的负载致动性能,加热升温快且热电性能稳定,经隔热层与导热层组合封装后可作为一种调温模块应用到服装的保暖层。创新的调温结构可根据穿着者需求调节厚度和发热,给用户带来更舒适便捷的穿着体验,推动保暖层设计向着智能化发展。 展开更多
关键词 形状记忆 镍钛合金纤维 致动织物 保暖性能 电热性能
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基于关键点坐标估算的变弯度机翼后缘形状重构方法研究
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作者 王文娟 刘元博 +3 位作者 张梦杰 薛景锋 宋坤苓 陈星伊 《航空制造技术》 北大核心 2026年第5期76-84,共9页
为实现变弯度机翼后缘外形实时感知,支撑机翼外形的闭环控制,本文以一种指关节式变弯度后缘为研究对象,提出了基于光纤光栅传感器的形状重构方法。首先设计了一种光纤梁,通过几个支撑件与后缘翼肋相连,利用激光跟踪仪等手段测量后缘偏... 为实现变弯度机翼后缘外形实时感知,支撑机翼外形的闭环控制,本文以一种指关节式变弯度后缘为研究对象,提出了基于光纤光栅传感器的形状重构方法。首先设计了一种光纤梁,通过几个支撑件与后缘翼肋相连,利用激光跟踪仪等手段测量后缘偏转不同角度时后缘外形数据和关键点坐标数据,建立光纤光栅测得的应变数据与二者的映射关系。将后缘结构的变形简化为一种三关节串联机器人模型,通过利用后缘结构已知尺寸信息,对关键点坐标数据进行逆向解算得到各关节转动角度,利用正运动学求解后缘的当前姿态,实现后缘形状的重构。基于后缘地面试验数据开展形状重构算法的验证工作,以后缘偏转角度作为重构精度指标,重构后缘偏度与激光跟踪仪所测后缘偏度的相对误差为1.57%,验证了该方法的准确性和可行性,为柔性大变形机翼的实时形状感知提供一种可行的思路和手段。 展开更多
关键词 变弯度机翼后缘 光纤光栅 形状重构 全尺寸试验 正运动学
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聚酰亚胺纤维用三叶形喷丝板的设计
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作者 陈斌 朱贵澎 《合成纤维》 2026年第1期47-49,83,共4页
围绕聚酰亚胺纤维异形喷丝板设计展开研究,阐述了聚酰亚胺材料的重要性及其广泛应用领域,分析了异形喷丝板设计的意义。以三叶形喷丝板为例,介绍其结构、设计要点、应用场景及结合Extrusion Polyflow软件进行三维仿真的应用,为聚酰亚胺... 围绕聚酰亚胺纤维异形喷丝板设计展开研究,阐述了聚酰亚胺材料的重要性及其广泛应用领域,分析了异形喷丝板设计的意义。以三叶形喷丝板为例,介绍其结构、设计要点、应用场景及结合Extrusion Polyflow软件进行三维仿真的应用,为聚酰亚胺纤维的生产提供了重要的理论依据和技术支持。 展开更多
关键词 聚酰亚胺纤维 三叶形喷丝板 Extrusion Polyflow软件
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π型悬臂梁结构的光纤氢气传感器增敏机制研究
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作者 乔亚兴 解智刚 +2 位作者 姜文韬 季子杰 章程熙 《机械设计与制造工程》 2026年第2期138-142,共5页
为提升氢气检测的灵敏度和噪声鲁棒性,提出一种基于π型悬臂梁结构的光纤氢气传感器。传感单元采用钯铜(PdCu)合金作为敏感层,通过微机电系统(MEMS)技术完成结构建模。建立了π型悬臂梁的气体-力学转换理论模型,并利用COMSOL Multiphys... 为提升氢气检测的灵敏度和噪声鲁棒性,提出一种基于π型悬臂梁结构的光纤氢气传感器。传感单元采用钯铜(PdCu)合金作为敏感层,通过微机电系统(MEMS)技术完成结构建模。建立了π型悬臂梁的气体-力学转换理论模型,并利用COMSOL Multiphysics软件对比分析了π型与常规矩形悬臂梁的力学响应特性。仿真结果表明:在相同气体浓度载荷下,π型悬臂梁的形变响应量显著高于矩形结构,最大形变增益达57%,证实其机械灵敏度优势;同时,π型结构的固有频率降低32%,有效拓宽了环境振动抑制带宽。 展开更多
关键词 光纤传感器 π型悬臂梁 氢气传感 微机电系统技术
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隧道结级联多有源区激光器光束整形与合束系统
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作者 曾越 仲莉 +4 位作者 薛春来 陈平 王钇心 肖湘珂 胡涛 《发光学报》 北大核心 2026年第1期133-143,共11页
在通过隧道结形成的多有源区串联结构的半导体激光器中,由于发光区域之间通常缺乏有效的横向光学耦合,各有源区的激射光斑在远场呈现多个非相干的离散空间分布。经过快轴准直后,输出光束表现为一系列相对于光轴对称的离散角度分布,不仅... 在通过隧道结形成的多有源区串联结构的半导体激光器中,由于发光区域之间通常缺乏有效的横向光学耦合,各有源区的激射光斑在远场呈现多个非相干的离散空间分布。经过快轴准直后,输出光束表现为一系列相对于光轴对称的离散角度分布,不仅导致远场发散角显著增大,还使远场强度分布维持多光斑结构。经光学系统聚焦或成像后,引发焦斑质量退化,限制光纤耦合效率及输出光束亮度的提升。针对该问题,本文提出基于临界角调控的全反射棱镜组和对称式高反射棱镜结构的光束整形方法,通过临界角下的选择性反射实现多发射区光束的角度重构,使角空间中原本离散的三峰分布经整形后合成为单峰集中分布,快轴发散角由0.52°压缩至0.11°,实现约79%的角度压缩率,提升了多有源区光束方向的一致性。结合快轴暗区压缩棱镜与伽利略缩束系统,进一步实现快慢轴光束参数积的匹配。整形后,快轴光束参数积由54.6 mm·mrad降低至22.8 mm·mrad,焦平面光强分布由“三光斑离散分布”转变为“单光斑集中分布”,并将聚焦光束耦合进NA 0.22、芯径300μm的光纤中。系统峰值输出功率达630 W,光-光转换效率为78.8%。此外,通过装调与加工容差分析、热-结构耦合仿真及光谱色散与热致折射率效应分析评估了全反射角度整形镜的稳定性与可实现性,表明该光束整形与合束方案具有良好的光学稳定性和工程应用前景。 展开更多
关键词 隧道结级联多有源区半导体激光器 快轴准直 光束整形 角度校正 光束质量 光纤耦合
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基于钻孔顺序优化的L形槽孔毛刺质量改善研究
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作者 谢斯文 《印制电路信息》 2026年第1期20-23,共4页
L形槽孔在印制电路板(PCB)设计中的应用日益广泛,但在其加工过程中,槽孔相交处易产生玻璃纤维毛刺,严重影响产品质量。对该问题展开研究,发现传统加工顺序导致第二槽钻削时相交区域玻璃纤维残余应力较低,易被钻头拉扯形成毛刺。基于此,... L形槽孔在印制电路板(PCB)设计中的应用日益广泛,但在其加工过程中,槽孔相交处易产生玻璃纤维毛刺,严重影响产品质量。对该问题展开研究,发现传统加工顺序导致第二槽钻削时相交区域玻璃纤维残余应力较低,易被钻头拉扯形成毛刺。基于此,提出一种钻孔顺序优化方法 (逆时针编程),即通过调整相邻L形槽孔的钻削顺序,确保钻削每个L形槽孔内部第二槽时钻头旋转阻力方向为未加工基材,进而有效切断玻璃纤维杜绝拉扯。实践应用表明,该方法可显著减少L形槽孔相交处的毛刺,从而提升槽孔质量。 展开更多
关键词 L形槽孔 数控钻孔 毛刺控制 玻璃纤维 钻孔顺序
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纤维桩加全瓷冠修复上颌第一前磨牙穿髓型楔状缺损的效果及对咀嚼能力和抗折性的影响
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作者 葛文华 司红羚 侯庆荣 《中国美容医学》 2026年第2期142-145,共4页
目的:探究纤维桩加全瓷冠修复上颌第一前磨牙穿髓型楔状缺损的效果,并观察对咀嚼能力和抗折性的影响。方法:回顾性分析病例资料,选自笔者医院2021年1月-2022年1月收治的148例上颌第一前磨牙穿髓型楔状缺损患者,根据不同的治疗方式分组... 目的:探究纤维桩加全瓷冠修复上颌第一前磨牙穿髓型楔状缺损的效果,并观察对咀嚼能力和抗折性的影响。方法:回顾性分析病例资料,选自笔者医院2021年1月-2022年1月收治的148例上颌第一前磨牙穿髓型楔状缺损患者,根据不同的治疗方式分组。将行纤维桩联合全瓷冠修复的76例患者(患牙82颗)纳入研究组,将行金属桩联合全瓷冠修复的72例患者(患牙80颗)纳入对照组。观察两组修复效果(整体牙齿功能、颜色满意度、边缘合适性、牙周健康状况、术后敏感、咀嚼能力)、美学效果[红色美学指数(PES)、白色美学指数(WES)]、并发症发生情况以及抗折性(术后1年内修复体颈部折断率)。结果:术后6个月,研究组整体牙齿功能、边缘合适性、牙周健康状况、术后敏感评级明显优于对照组(P<0.05);两组颜色满意度评级差异无统计学意义(P>0.05);研究组较对照组在咬合力与咀嚼效率上明显更高(P<0.05);研究组PES评分、WES评分明显高于对照组(P<0.05);研究组术后6个月内并发症总发生率明显低于对照组(P<0.05);术后1年内,研究组未出现颈部折断,对照组出现5例颈部折断,研究组折断率低于对照组(0.00%vs.6.94%,P<0.05)。结论:纤维桩加全瓷冠修复上颌第一前磨牙穿髓型楔状缺损具有较好的修复和美学效果,修复体抗折性强,且患者咀嚼能力好,术后并发症少,值得临床推广应用。 展开更多
关键词 纤维桩 全瓷冠修复 上颌第一前磨牙 穿髓型楔状缺损 修复效果 咀嚼功能 抗折性
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Kinetic investigation of the energy storage process in graphene fiber supercapacitors:Unraveling mechanisms,fabrications,property manipulation,and wearable applications 被引量:1
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作者 Juan Zhang Wenwen Liu +8 位作者 Minzhi Du Qingli Xu Minren Hung Ruifang Xiang Meng Liao Xinhou Wang Bingjie Wang Aiping Yu Kun Zhang 《Carbon Energy》 2025年第1期133-173,共41页
Graphene fiber supercapacitors(GFSCs)have garnered significant attention due to their exceptional features,including high power density,rapid charge/discharge rates,prolonged cycling durability,and versatile weaving c... Graphene fiber supercapacitors(GFSCs)have garnered significant attention due to their exceptional features,including high power density,rapid charge/discharge rates,prolonged cycling durability,and versatile weaving capabilities.Nevertheless,inherent challenges in graphene fibers(GFs),particularly the restricted ion-accessible specific surface area(SSA)and sluggish ion transport kinetics,hinder the achievement of optimal capacitance and rate performance.Despite existing reviews on GFSCs,a notable gap exists in thoroughly exploring the kinetics governing the energy storage process in GFSCs.This review aims to address this gap by thoroughly analyzing the energy storage mechanism,fabrication methodologies,property manipulation,and wearable applications of GFSCs.Through theoretical analysis of the energy storage process,specific parameters in advanced GF fabrication methodologies are carefully summarized,which can be used to modulate nano/micro-structures,thereby enhancing energy storage kinetics.In particular,enhanced ion storage is realized by creating more ion-accessible SSA and introducing extra-capacitive components,while accelerated ion transport is achieved by shortening the transport channel length and improving the accessibility of electrolyte ions.Building on the established structure-property relationship,several critical strategies for constructing optimal surface and structure profiles of GF electrodes are summarized.Capitalizing on the exceptional flexibility and wearability of GFSCs,the review further underscores their potential as foundational elements for constructing multifunctional e-textiles using conventional textile technologies.In conclusion,this review provides insights into current challenges and suggests potential research directions for GFSCs. 展开更多
关键词 fiber-shaped supercapacitor GRAPHENE ion storage ion transport wearable application
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