Liquid-Metal-Superlyophilic and Conductivity-Strain-Enhancing Scaffold for Permeable Superelastic Conductors

Zhuang Qiuna; Ma Zhijun; Gao YuanZhang YaokangWang ShuaichenLu XiHu HongCheung ChifaiHuang QiyaoZheng Zijian

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Liquid-Metal-Superlyophilic and Conductivity-Strain-Enhancing Scaffold for Permeable Superelastic Conductors

机译：Liquid-Metal-Superlyophilic and Conductivity-Strain-Enhancing Scaffold for Permeable Superelastic Conductors

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Liquid metal (LM) has recently been used as an advanced stretchable material for constructing stretchable and wearable electronics. However, due to the poor wettability of LM and the large dimensional change during stretching, it remains very challenging to obtain a high conductivity with minimum resistance increase over large tensile strains. To address the challenge, an LM-superlyophilic and stretchable fibrous thin-film scaffold is reported, on which LM can be readily coated or printed to form permeable superelastic conductors. In contrast to conventional LM-based conductors where LM particles are filled into an elastic matrix or printed on the surface of an elastic thin film, the LM can quickly infuse into the LM-superlyophilic scaffold and form bi-continuous phases. The LM-superlyophilic scaffold shows unprecedented advantages of an extremely high uptake of the LM and a conductivity-enhancement characteristic when stretched. As a result, the LM-based conductor displays and ultrahigh conductivity of 155 900 S cm(-1) and a marginal resistance change by only 2.5 fold at 2 500 strain. The conductor also possesses a remarkable durability over a period of 220 000 cycles of stretching tests. The printing of LM onto the LM-superlyophilic scaffold for the fabrication of various permeable and wearable electronic devices is demonstrated.

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《Advanced functional materials》 |2021年第47期|2105587.1-2105587.8|共8页
作者
Zhuang Qiuna; Ma Zhijun; Gao YuanZhang YaokangWang ShuaichenLu XiHu HongCheung ChifaiHuang QiyaoZheng Zijian;
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Hong Kong Polytech Univ, Inst Text & Clothing, Lab Adv Interfacial Mat & Devices, Hong Kong, Peoples R China;

Hong Kong Polytech Univ, State Key Lab Ultraprecis Machining Technol, Hong Kong, Peoples R China;

Hong Kong Polytech Univ, Inst Text & Clothing, Lab Adv Interfacial Mat & Devices, Hong Kong, Peoples R China|Hong Kong Polytech Univ, State Key Lab Ultraprecis Machining Technol, Hong Kong, Peoples R China|Hong Kong Polytech Univ, Res Inst Intelligent WeaHong Kong Polytech Univ, Inst Text & Clothing, Lab Adv Interfacial Mat & Devices, Hong Kong, Peoples R China|South China Univ Technol Guangzhou, State Key Lab Luminescent Mat & Devices,Sch Mat S, Guangdong Prov Key Lab Fibre Laser Mat & Appl Tec, Guangdon;

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正文语种英语
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conductors; electrospinning; liquid metals; permeability; stretchable electronics;

Liquid-Metal-Superlyophilic and Conductivity-Strain-Enhancing Scaffold for Permeable Superelastic Conductors

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