A Generic Soft Encapsulation Strategy for Stretchable Electronics
A Generic Soft Encapsulation Strategy for Stretchable Electronics
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DOI：
10.1002/adfm.201806630
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发表时间：
2019-02-21
影响因子：
19
通讯作者：
Zhang, Yihui
中科院分区：
文献类型：
--
作者：
Li, Kan;Cheng, Xu;Zhang, Yihui
无机电子系统的可拉伸形式的最新进展已经建立了一条通往新类别设备的路线，这些设备在功能生物界面方面具有特别独特的能力，因为它们与人体组织和器官的机械和几何兼容性。一种可靠的方法来物理和化学保护电子元件和互连是不可或缺的实际应用。尽管最近的报告描述了软固体封装的各种选择，但不显著降低拉伸性的方法的开发仍然是持续关注的领域。在此，报告了一种通用的软封装策略，其适用于广泛的可拉伸互连件设计，包括基于二维（2D）蛇形构造、2D分形启发图案和3D螺旋构造的那些。这种策略形成封装，而系统是在一个预应变的状态，在传统的方法，涉及应变的配置。系统的比较表明，实质性的增强（例如，对于2D蛇形近似为6.0倍，对于2D分形近似为4.0倍，对于3D螺旋近似为2.6倍）。在高度可拉伸的发光二极管系统，可以安装到复杂的曲线表面上的演示应用程序说明了功能器件系统的一般能力。
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.