Spontaneous formation of wrinkle-driven tubular structure as a versatile platform for adaptive 3D stretchable electronics

Songshan Zeng; Rui Li; William R. T. Tait; Andrew T. Smith; Monica Zhang; Mengting Zhu; Nora Chov; Gefan Xu; Dianyun Zhang; Luyi Sun

doi:10.1039/D0MH00593B

Spontaneous formation of wrinkle-driven tubular structure as a versatile platform for adaptive 3D stretchable electronics†

Songshan Zeng,^ab Rui Li,^c William R. T. Tait,^b Andrew T. Smith,^b Monica Zhang,

^b Mengting Zhu,^b Nora Chov,^b Gefan Xu,^b Dianyun Zhang*^c and Luyi Sun

*^abd

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* Corresponding authors

^a Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA
E-mail: luyi.sun@uconn.edu

^b Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, USA

^c Department of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269, USA
E-mail: dianyun.zhang@uconn.edu

^d Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, USA

Abstract

A stretchable, 3D tubular structure formed due to processing-induced wrinkles is proposed as a platform to develop adaptive stretchable electronics. This integrated structure is fabricated by releasing a pre-stretched 2D film-substrate precursor, resulting in a wrinkled surface, that shows a strong directional dependence that drives the tube formation. This 3D shape adaptivity can control the radial opening and closing of the tube through longitudinal strain, which inspires the development of a dual-channel piezoresistive strain sensor/switch concomitant with mechanochromic effect and an intriguing tactile responsive artificial Mimosa pudica device. In addition, the system is compatible with 2D film deposition technologies, which allows customized electrode patterns to be coated on the pre-stretched 2D precursor followed by wrapped inside as precursor released. Upon sealing the tube, this “coating and self-wrapping” feature allows for the invention of a highly stretchable tactile switch, and a stretchable tubular supercapacitor with dual stimuli-responsiveness.

Materials Horizons

Spontaneous formation of wrinkle-driven tubular structure as a versatile platform for adaptive 3D stretchable electronics†

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