title: Lightweight, Superelastic, and Mechanically Flexible Graphene/Polyimide Nanocomposite Foam for Strain Sensor Application.
abstract: The creation of superelastic, flexible three-dimensional (3D) graphene-based architectures is still a great challenge due to structure collapse or significant plastic deformation. Herein, we report a facile approach of transforming the mechanically fragile reduced graphene oxide (rGO) aerogel into superflexible 3D architectures by introducing water-soluble polyimide (PI). The rGO/PI nanocomposites are fabricated using strategies of freeze casting and thermal annealing. The resulting monoliths exhibit low density, excellent flexibility, superelasticity with high recovery rate, and extraordinary reversible compressibility. The synergistic effect between rGO and PI endows the elastomer with desirable electrical conductivity, remarkable compression sensitivity, and excellent durable stability. The rGO/PI nanocomposites show potential applications in multifunctional strain sensors under the deformations of compression, bending, stretching, and torsion.
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Yuyang
authors: Y
authors: Qin
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Qingyu
authors: Q
authors: Peng
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Yujie
authors: Y
authors: Ding
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Zaishan
authors: Z
authors: Lin
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Chunhui
authors: C
authors: Wang
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Ying
authors: Y
authors: Li
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Fan
authors: F
authors: Xu
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Jianjun
authors: J
authors: Li
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Ye
authors: Y
authors: Yuan
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Xiaodong
authors: X
authors: He
authors: Center for Composite Materials and Structures and ‡Division of Aircraft Dynamics and Control, School of Astronautics, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors: Yibin
authors: Y
authors: Li
keywords: graphene; mechanically flexible; polyimide; strain sensor; superelastic