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High‑Performance Fasciated Yarn Artificial Muscles Prepared by Hierarchical Structuring and Sheath-Core Coupling for Versatile Textile Actuators

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Advanced Fiber Materials 2023年第4期5卷 1534-1547页

作者： Nan Sheng Yangyang Peng Fengxin Sun jinlian hu MOE Key Laboratory of Eco‑Textiles Jiangnan UniversityWuxi 214122China Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China

High-performance yarn artificial muscles are highly desirable as miniature actuators,sensors,energy harvesters,and soft ***,achieving a yarn artificial muscle that covers all the properties of excellent actuation performance,mechanical robustness,structural stability,and high scalability by a low-cost strategy is still a great ***,a bio-inspired fasciated yarn structure is first reported for creating robust high-performance yarn artificial *** conventional strategies that leverage costly materials or complex processing,the developed yarn artificial muscles are constructed by hierarchically helical and sheath-core assembly design of cost-effective common fibers,such as viscose and *** hierarchically helical sheath structure pushes the theoretical limit of the inserted twist in yarns and endows the yarn muscles with large stroke(5815°cm^(-1))and high work capacity(23.5 J kg^(-1)).Due to the rapid water transfer and efficient energy conversion of inter-sheath-core coupling,the as-prepared yarn muscles possess fast response,high rotation accelerated speed,and low recovery ***,the inactive core yarn serves as support for internal tethering and load-bearing,enabling these yarn muscles to maintain a self-stable structure,robust life cycle and *** show that the yarn muscle fabricated in this method is readily available and highly scalable for achieving high-dimensional actuation deformations,which considerably broadens the application scenarios of artificial muscles.

关键词： Artificial muscles Hierarchical structuring Actuators Smart textiles

Evaporative/radiative electrospun membrane for personal cooling

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Nano Research 2023年第2期16卷 2563-2571页

作者： Mohammad Irfan Iqbal Shuo Shi Gokula Manikandan Senthil Kumar jinlian hu Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong Kong 999077China Department of Biomedical Engineering City University of Hong KongHong Kong 999077China Department of Building Environment and Energy Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

Functional textiles that promote daily comfort and productivity must efficiently release body sweats and transmit radiative heat through sweat evaporation and mid-infrared radiation(MIR)(8–13μm).However,most of the traditional clothing cannot provide simultaneous sweat evaporation and mid-infrared radiation transmission efficiently,leading to a poor design of personal cooling ***,an evaporative/radiative integrated functional fibrous electrospun membrane is meticulously designed and controllably fabricated via facile electrospinning technology for personal cooling *** developed membrane can be applied as a smart wearable with distinct personal thermal management *** promising temperature and humidity responsive vapor transmission of the membrane grants 1.2 times of evaporative cooling than that of traditional ***,based on its high mid-infrared radiation transmission(53%)property in the range of 8–13μm,the as-spun membrane provides extra cooling of 1.5°C than that of ***,the building energy saving performances demonstrated that 47.1%annual building cooling can be achieved using the developed electrospun *** general,the evaporative/radiative electrospun membrane creates a passive cooling microclimate for the human body,meeting the growing demand of wearable for personal cooling.

关键词： building energy cooling management electrospinning evaporative cooling radiative cooling

Formation of Slipped Dimer in 6-Pentafluorophenyl-substituted Olympicenyl Radical

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Chinese Journal of Chemistry 2023年第22期41卷 3025-3030,I0002页

作者： Qin Xiang Yupeng Guo jinlian hu Zhaoyang Li Zhe Sun Institute of Molecular Plus Departmentof ChemistryTianjin University92 Wejin RoadTianjin300072China School of Materials Science and Engineering Nankai University38 Tongyan RoadHaihe Educational ParkTianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Introduction of substituents to organic radical is important to increase the stability and realize its applications as multifunctional *** this work,pentafluorophenyl group was introduced to 6-position of olympicenyl radical(OR)via a newly designed synthetic strategy to afford the fourth OR derivative,*** to the combined electro-withdrawing effect and steric hindrance of pentafluorophenyl,OR4 was stable and isolable in crystalline state.

关键词： Radical Odd-alternant hydrocarbon Dimerization Electrostatic interaction Pentafluorophenyl substituent

Electrospun Textile Strategies in Tendon to Bone Junction Reconstruction

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Advanced Fiber Materials 2023年第3期5卷 764-790页

作者： Xiaoyun Xu Yifan Si Yi Zhao Qinfei Ke jinlian hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China Shanghai Frontiers Science Center of Advanced Textiles Donghua UniversityShanghai 201620China Shanghai Institute of Technology Shanghai 200235China

The repair of tendon to bone junction(TBJ)remains a tremendous challenge in tissue engineering due to the complicated structure,components,mechanical properties,and cell *** order to reconstruct the tissue and restore its functionality,biomedical scaffolds with hierarchical and gradient structures have been fabricated by various *** recent decades,electrospinning has become one of the most popular methods in fabricating TBJ scaffolds due to easy fabrication,high porosity,and ECM-like nano-scale ***,mechanical properties are the pain point of electrospun biomedical *** textile technology can be exploited to compensate for this weakness,which will be deeply discussed *** review will start with a brief introduction to the structure and function of the native TBJ tissue and a short overview of electrospinning ***,different electrospun biomedical scaffolds for TBJ repair will be summarized and ***,some advanced technologies and modification methods in fabricating functionalized electrospun TBJ scaffolds are *** the end,current challenges and solutions are being proposed,which would provide instruction for the research of electrospun textile TBJ scaffolds.

关键词： Electrospun Textile Tendon to bone Tissue engineering Biomimetic

Recent advances in skin collagen:functionality and non-medical applications

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Journal of Leather Science and Engineering 2021年第1期3卷 42-53页

作者： Yanting Han jinlian hu Gang Sun Institute of Textiles and Clothing the Hong Kong Polytechnic UniversityHong KongChina Department of Biomedical Engineering City University of Hong KongKowloonHong KongChina Division of Textiles and Clothing University of CaliforniaDavisDavisUSA

During nature evolution process,living organisms have gradually adapted to the environment and been adept in synthesizing high performance structural materials at mild conditions by using fairly simple building *** skin,as the largest organ of animals,is such a representative *** by its intricate organization where collagen fibers are arranged in a randomly interwoven network,skin collagen(SC),defined as a biomass derived from skin by removing non-collagen components displays remarkable performance with combinations of mechanical properties,chemical-reactivity and biocompatibility,which far surpasses those of synthetic *** present,the application of SC in medical field has been largely studied,and there have been many reviews summarizing these ***,the generalized view on the aspects of SC as smart materials in non-medical fields is still lacking,although SC has shown great potential in terms of its intrinsic properties and ***,this review will provide a comprehensive summary that integrated the recent advances in SC,including its preparation method,structure,reactivity,and functionality,as well as applications,particularly in the promising area of smart materials.

关键词： materials. reactivity removing

Bioinspired All‑Fibrous Directional Moisture‑Wicking Electronic Skins for Biomechanical Energy Harvesting and All‑Range Health Sensing

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Nano-Micro Letters 2023年第4期15卷 277-293页

作者： Chuanwei Zhi Shuo Shi Shuai Zhang Yifan Si Jieqiong Yang Shuo Meng Bin Fei jinlian hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong Kong S.A.R 999077China City University of Hong Kong Shenzhen Research Institute Shenzhen 518057People’s Republic of China

Electronic skins can monitor minute physiological signal variations in the human skins and represent the body’s state,showing an emerging trend for alternative medical diagnostics and human-machine *** this study,we designed a bioinspired directional moisture-wicking electronic skin(DMWES)based on the construction of heterogeneous fibrous membranes and the conductive MXene/CNTs electrospraying *** moisture transfer was successfully realized by surface energy gradient and push-pull effect via the design of distinct hydrophobic-hydrophilic difference,which can spontaneously absorb sweat from the *** DMWES membrane showed excellent comprehensive pressure sensing performance,high sensitivity(maximum sensitivity of 548.09 kPa^(−1)),wide linear range,rapid response and recovery *** addition,the single-electrode triboelectric nanogenerator based on the DMWES can deliver a high areal power density of 21.6μW m^(−2) and good cycling stability in high pressure energy ***,the superior pressure sensing and triboelectric performance enabled the DMWES for all-range healthcare sensing,including accurate pulse monitoring,voice recognition,and gait *** work will help to boost the development of the next-generation breathable electronic skins in the applications of AI,human-machine interaction,and soft robots.

关键词： Bioinspired Electrospinning Electronic skin Directional moisture wicking MXene

Bioinspired Stable Single‑Layer Janus Fabric with Directional Water/Moisture Transport Property for Integrated Personal Cooling Management

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Advanced Fiber Materials 2023年第1期5卷 138-153页

作者： Yifan Si Shuo Shi Zhichao Dong Hanbai Wu Fengxin Sun Jieqiong Yang jinlian hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China CAS Key Laboratory of Bio‑Inspired Materials and Interfacial Sciences Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Eco‑Textiles of Ministry of Education Jiangnan UniversityWuxi 214122China

Extensive progress has been achieved regarding Janus fabric for directional water transport due to its excellent and feasible personal cooling management ability,which has great significance for energy conservation,pollution reduction,and human ***,existing Janus asymmetric multilayer fabrics for directional water transport are still limited by their com-plicated syntheses and poor *** by the compositionally graded architecture of leaf cuticles,we propose a single-layer Janus personal cooling management fabric(JPCMF)via a one-step electrospinning *** JPCMF shows not only great directional bulk water transport ability but also asymmetry moisture(water vapor)transport ability with a high asymmetry factor(1.49),water vapor transmission value(18.5 kg^(-1) m-2 D-1),and water evaporation rate(0.735 g h^(-1)).Importantly,the JPCMF exhibits outstanding durability and stability thanks to a novel electrostatic adsorption-assisted self-adhesion strategy for resisting abrasion,peeling and *** these characteristics,the JPCMF can achieve a 4.0°C personal cooling management effect,better than taht of cotton fabric,on wet *** good biocompatibility and nontoxic-ity also endow the JPCMF with the potential to be a self-pumping *** strategy should facilitate a new method for developing next-generation intelligent multifunctional fabrics.

关键词： Cooling management Janus directional transport Electrospinning Superwettability bioinspired

Pentagon-Containing Doublet Graphene Fragments with Edge-Dependent Spin/Charge Distribution

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Chinese Journal of Chemistry 2022年第21期40卷 2525-2530页

作者： Zongcheng Gong Qin Xiang Ke Li Zhuofan Xu jinlian hu Yong Ni Sota Sato Zhe Sun Institute of Molecular Plus Departmentof ChemistryTianjin University92 Weijin RoadTianjin 300072China Department of Chemistry Southern University of Science and TechnologyShenzhenGuangdong 518055China Department of Applied Chemistry Integrated Molecular Structure Analysis LaboratorySocial Cooperation ProgramThe University of Tokyo113-8654Japan Haihe Laboratoryof Sustainable Chemical Transformations Tianjin 300192China

The synthesis of stable open-shell hydrocarbon system comprising of pentagon defects and zigzag edges remains unexplored,which can be considered as model compounds for unraveling the spin-localized states in graphene *** concise synthetic approaches,twoπ-extended fluorenyl radicals were synthesized and isolated in their crystalline state.X-ray crystallographic analysis and studies on the magnetic,optical and electrochemical properties of neutral and charged species have revealed an interesting edge-dependence of the spin/charge distribution,that is,the spin and charge distribution shifted from the pentagon defects to the zigzag edges with the elongation of *** phenomenon was unprecedented for hydrocarbon radicals and can be rationalized by the recovery of Clar Sextets in the dominant resonance ***,one of the radicals exhibited exceptional stability in air-saturated solutions with the half-life time up to 260 d,thus providing opportunities for the applications as electronic materials.

关键词： Radicals Graphene edge structure Fluorenyl radical Conjugation Clar Sextets

Spider-capture-silk mimicking fibers with high-performance fog collection derived from superhydrophilicity and volume-swelling of gelatin knots

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Collagen and Leather 2023年第1期5卷 45-54页

作者： Yuanzhang Jiang Harun Venkatesan Shuo Shi Cong Wang Miao Cui Qiang Zhang Lin Tan jinlian hu College of Biomass Science and Engineering Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan UniversityChengdu 610065China Department of Textile and Fibre Engineering Indian Institute of TechnologyDelhiNew Delhi 110016India Department of Biomedical Engineering City University of Hong KongKowloon 999077Hong Kong SARChina Shenzhen Bay Laboratory Shenzhen 518132China Key Laboratory of Biochip Technology Shenzhen Biotech and Health CentreCity University of Hong Kong Shenzhen Research InstituteShenzhen 518057China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China City University of Hong Kong Shenzhen Research Institute Shenzhen 518057China

Spider-capture-silk(SCS)can directionally capture and transport water from humid air relying on the unique geometrical *** there have been adequate reports on the fabrication of artificial SCSs from petroleum-based materials,it remains a big challenge to innovate bio-based SCS mimicking fibers with high-performance fog collection ability and efficiency ***,we report an eco-friendly and economical fiber system for water collection by coating gelatin on degummed *** to the previously reported fibers with the best fog collection ability(~13.10μL),Gelatin on silk fiber 10(GSF10)can collect larger water droplet(~16.70μL in 330 s)with~98%less ***,the water collection efficiency of GSF10 demonstrates~72%and~48%enhancement to the existing best water collection polymer coated SCS fibers and spidroin eMaSp2 coated degummed silk respectively in terms of volume-to-TCL(vapor-liquid-solid three-phase contact line)*** simultaneous function of superhydro-philicity,surface energy gradient,and~65%water-induced volume swelling of the gelatin knots are the key factors in advancing the water collection *** availability of feedstocks and~75%improved space utiliza-tion guarantee the scalability and practical application of such bio-based fiber.

关键词： Artificial spider-capture-silk Directional water collection Volume-to-TCL index Superhydrophilicity Volume swelling