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A Generic Soft Encapsulation Strategy for Stretchable Electronics

机译：可伸缩电子的通用软封装策略

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摘要

Recent progress in stretchable forms of inorganic electronic systems has established a route to new classes of devices, with particularly unique capabilities in functional biointerfaces, because of their mechanical and geometrical compatibility with human tissues and organs. A reliable approach to physically and chemically protect the electronic components and interconnects is indispensable for practical applications. Although recent reports describe various options in soft, solid encapsulation, the development of approaches that do not significantly reduce the stretchability remains an area of continued focus. Herein, a generic, soft encapsulation strategy is reported, which is applicable to a wide range of stretchable interconnect designs, including those based on two-dimensional (2D) serpentine configurations, 2D fractal-inspired patterns, and 3D helical configurations. This strategy forms the encapsulation while the system is in a prestrained state, in contrast to the traditional approach that involves the strain-free configuration. A systematic comparison reveals that substantial enhancements (e.g., approximate to 6.0 times for 2D serpentine, approximate to 4.0 times for 2D fractal, and approximate to 2.6 times for 3D helical) in the stretchability can be achieved through use of the proposed strategy. Demonstrated applications in highly stretchable light-emitting diodes systems that can be mounted onto complex curvilinear surfaces illustrate the general capabilities in functional device systems.
机译：可拉伸形式的无机电子系统的最新进展已经建立了通往新型设备的途径，由于它们与人体组织和器官的机械和几何相容性，它们在功能性生物界面中具有特别独特的功能。在实际应用中，物理和化学保护电子组件和互连的可靠方法必不可少。尽管最近的报道描述了软固体封装中的各种选择，但是开发不会显着降低可拉伸性的方法仍然是继续关注的领域。本文中，报告了一种通用的软封装策略，该策略适用于广泛的可拉伸互连设计，包括基于二维（2D）蛇形构造，2D分形启发图案和3D螺旋构造的设计。与涉及无应变配置的传统方法相反，此策略在系统处于预应变状态时形成封装。系统的比较表明，通过使用所提出的策略，可以实现可拉伸性的实质性增强（例如，对于2D蛇形蛇形约为6.0倍，对于2D分形蛇形约为4.0倍，对于3D螺旋形来说约为2.6倍）。可以安装在复杂的曲线表面上的高伸缩性发光二极管系统的演示应用说明了功能设备系统的一般功能。

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  • 来源
    《Advanced Functional Materials》 |2019年第8期|1806630.1-1806630.12|共12页
  • 作者

    Li Kan; Cheng Xu; Zhu Feng; Li Linze; Xie Zhaoqian; Luan Haiwen; Wang Zhouheng; Ji Ziyao; Wang Heling; Liu Fei; Xue Yeguang; Jiang Changqing; Feng Xue; Li Luming; Rogers John A.; Huang Yonggang; Zhang Yihui;

  • 作者单位

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA|Wuhan Univ Technol, Sch Logist Engn, Wuhan 430063, Hubei, Peoples R China;

    Tsinghua Univ, Sch Aerosp Engn, Natl Engn Lab Neuromodulat, Beijing 100084, Peoples R China;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Tsinghua Univ, Sch Aerosp Engn, Natl Engn Lab Neuromodulat, Beijing 100084, Peoples R China;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

    Tsinghua Univ, Sch Aerosp Engn, Natl Engn Lab Neuromodulat, Beijing 100084, Peoples R China;

    Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA|Northwestern Univ, Dept Biomed Engn, Evanston, IL 60208 USA|Northwestern Univ, Dept Neurol Surg, Evanston, IL 60208 USA|Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA|Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA|Northwestern Univ, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA|Northwestern Univ, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Northwestern Univ, Dept Civil & Environm Engn Mech Engn & Mat Sci &, Ctr Biointegrated Elect, Evanston, IL 60208 USA;

    Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China|Tsinghua Univ, Ctr Flexible Elect Technol, AML, Dept Engn Mech, Beijing 100084, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    buckling; encapsulation method; soft elastomers; stretchable electronics; two-stage encapsulation;

    机译：屈曲;封装方法;软弹性体;可拉伸电子器件;两阶段封装;

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