Shape morphing of plastic films

Feilong Zhang, Dong Li, Changxian Wang, Zhihua Liu, Man Yang, Zequn Cui, Junqi Yi, Ming Wang, Ying Jiang, Zhisheng Lv, Shutao Wang (), Huajian Gao () and Xiaodong Chen ()
Additional contact information
Feilong Zhang: Nanyang Technological University
Dong Li: Nanyang Technological University
Changxian Wang: Nanyang Technological University
Zhihua Liu: Agency for Science Technology and Research
Man Yang: Chinese Academy of Sciences
Zequn Cui: Nanyang Technological University
Junqi Yi: Nanyang Technological University
Ming Wang: Nanyang Technological University
Ying Jiang: Nanyang Technological University
Zhisheng Lv: Agency for Science Technology and Research
Shutao Wang: Chinese Academy of Sciences
Huajian Gao: Nanyang Technological University
Xiaodong Chen: Nanyang Technological University

Nature Communications, 2022, vol. 13, issue 1, 1-13

Abstract: Abstract Three-dimensional (3D) architectures have qualitatively expanded the functions of materials and flexible electronics. However, current fabrication techniques for devices constrain their substrates to 2D geometries and current post-shape transformation strategies are limited to heterogenous or responsive materials and are not amenable to free-standing inert plastic films such as polyethylene terephthalate (PET) and polyimide (PI), which are vital substrates for flexible electronics. Here, we realize the shape morphing of homogeneous plastic films for various free-standing 3D frameworks from their 2D precursors by introducing a general strategy based on programming the plastic strain in films under peeling. By modulating the peeling parameters, previously inaccessible free-standing 3D geometries ranging from millimeter to micrometer were predicted theoretically and obtained experimentally. This strategy is applicable to most materials capable of plastic deformation, including polymers, metals, and composite materials, and can even enable 4D transformation with responsive plastic films. Enhanced performance of 3D circuits and piezoelectric systems demonstrates the enormous potential of peeling-induced shape morphing for 3D devices.

Date: 2022
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DOI: 10.1038/s41467-022-34844-y

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