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Rare Metals 2024年第6期43卷 2747-2757页

作者： Xi-Di Sun Jun-Yang An Yi-Qi Sun Xin Guo Jing Wu Jiang-Bo Hua Meng-Rui Su Yi Shi Li-Jia Pan Collaborative Innovation Center of Advanced Microstructures School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China

stretchable electronics that monitor joint activity and treat diseases based on liquid metal could be used in the development of healthcare *** devices can be seamlessly integrated with human ***,most high-precision microstructures and complex patterns are difficult to fabricate due to the limitations of conventional fabrication solutions,resulting in suboptimal performance under practical ***,a liquid-metal stretchable system utilizing natural leaf veins was reported as microstructures,which was based on a biomimetic concept and utilized an all-solution process for the preparation of complex *** systems are ultra-high tensile(800%tensile strain),environmentally stable(20 days)and mechanically durable(300-cycle).The system can accurately recognize the wearer's finger bending level as well as simple gesture *** the same time,the system acts as a wearable heater,which can realize the fast heating behavior of heating up to 50℃in 3 min under the human body-safe voltage(1.5 V).The tensile stability is demonstrated by the heterogeneous integration of lasers(405 nm)with the system interconnects for a stretchable and wearable light source.

关键词： stretchable electronics Liquid metal stretchable conductor Vein Bionicist electronics

Plasma-induced nanowelding of a copper nanowire network and its application in transparent electrodes and stretchable conductors

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Nano Research 2016年第7期9卷 2138-2148页

作者： Ranran Wang Haitao Zhai Tao Wang Xiao Wang Yin Cheng Liangjing Shi Jing Sun The State Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy ot Sciences 1295 Dingxi Road Shanghai 200050 China

Copper nanowires （Cu NWs） have attracted increasing attention as building blocks for electronics due to their outstanding electrical properties and low cost. However, organic residues and oxide layers ubiquitously existing on the surface of Cu NWs impede good inter-wire contact. Commonly used methods such as thermal annealing and acid treatment often lead to nanowire damage. Herein, hydrogen plasma treatment at room temperature has been demonstrated to be effective for simultaneous surface cleaning and selective welding of Cu NWs at junctions. Transparent electrodes with excellent optical-electrical performance （19 ff）-sq-1 @ 90% T） and enhanced stability have been fabricated and integrated into organic solar cells. Besides, Cu NW conductors with superior stretchability and cycling stability under stretching speeds of up to 400 mm-min-＇ can also be produced by the nanowelding process, and the feasibility of their application in stretchable LED circuits has been demonstrated.

关键词： plasma nanowelding transparent electrode stretchable conductor organic solar cell

Peptidoglycan-inspired autonomous ultrafast self-healing bio-friendly elastomers for bio-integrated electronics

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National Science Review 2021年第5期8卷 130-139页

作者： Luzhi Zhang Jiahui Liang Chenyu Jiang Zenghe Liu Lijie Sun Shuo Chen Huixia Xuan Dong Lei Qingbao Guan Xiaofeng Ye Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Belt and Road Joint Laboratory of Advanced Fiber and Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua University Department of Cardiac Surgery Ruijin HospitalShanghai Jiao Tong University School of Medicine

Elastomers are essential for stretchable electronics, which have become more and more important in bio-integrated devices. To ensure high compliance with the application environment, elastomers are expected to resist, and even self-repair, mechanical damage, while being friendly to the human ***, inspired by peptidoglycan, we designed the first room-temperature autonomous self-healing biodegradable and biocompatible elastomers, poly(sebacoyl 1,6-hexamethylenedicarbamate diglyceride)(PSe HCD) elastomers. The unique structure including alternating ester-urethane moieties and bionic hybrid crosslinking endowed PSeHCD elastomers superior properties including ultrafast self-healing,tunable biomimetic mechanical properties, facile reprocessability, as well as good biocompatibility and biodegradability. The potential of the PSeHCD elastomers was demonstrated as a super-fast self-healing stretchable conductor(21 s) and motion sensor(2 min). This work provides a new design and synthetic principle of elastomers for applications in bio-integrated electronics.

关键词： biomimetic elastomers ultrafast self-healing bio-integrated electronics stretchable conductor

stretchable,breathable,and washable epidermal electrodes based on microfoam reinforced ultrathin conductive nanocomposites

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Nano Research 2023年第7期16卷 10412-10419页

作者： Tao Ma Yong Lin Xiaohui Ma Jiaxue Zhang Dongchan Li Desheng Kong School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300130China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Scienceand Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210046China

stretchable epidermal electronics allow conformal interactions with the human body for emerging applications in wearable health monitoring and *** devices are commonly constructed on submillimeter-thick elastomer substrates with limited moisture permeability,thereby leading to unpleasant sensations during long-term *** the ultrathin elastomer membrane may address this problem,the mechanical robustness is essentially lost for direct manipulations and repetitive ***,we report a stretchable,breathable,and washable epidermal electrode of microfoam reinforced ultrathin conductive nanocomposite(MRUCN).The new architecture involves ultrathin conductive silver nanowire nanocomposite features supported on a porous elastomeric microfoam substrate,which exhibits high moisture permeability for pleasant perceptions during epidermal ***-prepared epidermal electrodes show excellent electronic conductivity(8440 S·cm^(-1)),high feature resolution(~50μm),decent stretchability,and excellent *** addition,the MRUCN retains stable electrical properties during washing to meet the hygiene requirements for repetitive *** successful implementation in an integrated electronic patch demonstrates the practical suitability of MRUCN for a broad range of epidermal electronic devices and systems.

关键词： stretchable conductor epidermal electronics breathable conductor epidermal electrode

Highly stretchable and Permeable conductors Based on Shrinkable Electrospun Fiber Mats

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Advanced Fiber Materials 2021年第5期3卷 302-311页

作者： Qingsong Li Chen Ding Wei Yuan Ruijie Xie Xiaomeng Zhou Yang Zhao Mei Yu Zijian Yang Jing Sun Qiong Tian Fei Han Hanfei Li Xinping Deng Guanglin Li Zhiyuan Liu CAS Key Laboratory of Human‑Machine Intelligence‑Synergy Systems Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Printable Electronics Research Centre Suzhou Institute of Nano‑Tech and Nano‑BionicsChinese Academy of SciencesSuzhou 215123China

Wearable on-skin electrodes or conductors should be vapor permeable,strain-insensitive,isotropically stretchable and stable under cyclic *** strategies have been proposed to prepare the required conductors up to now;however,it is a challenge to fabricate them with above properties in a simple *** this paper,a highly permeable and stretchable conductor based on electrospun fluorine rubber fiber mat is *** fibers are pre-stretched in electric field during electrospinning,and they shrink isotropically by~35-40%in area after being detached from the *** obtained fiber mat conductor demonstrates high stretchability up to~170%,and the resistance changes only 0.8 under 60%strain,which is superior to many other strain-insensitive *** conductor possesses high stability,no cracks or structure damage are observed after washing and cyclic ***,the conductor is vapor permeable with a water vapor transmission rate of~850 g m−2 day−1,which is comparable to the normal water evaporation in ambient conditions,indicating that it would not disturb the sweat evaporation when being used on *** conductor is successfully used as stretchable yarns and electromyography(EMG)electrodes,showing high reliability in E-textiles and on-skin applications.

关键词： Electrospinning Shrinkable fiber mat stretchable conductor Wearable E-textiles EMG signal recording

Application of intrinsically conducting polymers in flexible electronics

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SmartMat 2021年第3期2卷 263-285页

作者： Jianyong Ouyang Department of Materials Science&Engineering National University of SingaporeSingaporeSingapore

Intrinsically conducting polymers(ICPs),such as polyacetylene,polyaniline,polypyrrole,polythiophene,and poly(3,4-ethylenedioxythiophene)(PEDOT),can have important application in flexible electronics owing to their unique merits including high conductivity,high mechanical flexibility,low cost,and good *** requirements for their application in flexible electronics include high conductivity and appropriate mechanical *** conductivity of some ICPs can be enhanced through a postpolymerization treatment,the so-called“secondary doping.”A conducting polymer film with high conductivity can be used as flexible electrode and even as flexible transparent electrode of optoelectronic *** application of ICPs as stretchable electrode requires high mechanical *** mechanical stretchability of ICPs can be improved through blending with a soft polymer or *** of their good biocompatibility,ICPs can be modified as dry electrode for biopotential monitoring and neural *** addition,ICPs can be used as the active material of strain sensors for healthcare monitoring,and they can be adopted to monitor food processing,such as the fermentation,steaming,storage,and refreshing of starch-based food because of the resistance variation caused by the food volume *** these applications of ICPs are covered in this review article.

关键词： biopotential electrode conducting polymer PEDOT strain sensor stretchable conductor transparent electrode