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- Title
Bioinspired Graphene Actuators Prepared by Unilateral UV Irradiation of Graphene Oxide Papers.
- Authors
Han, Dong‐Dong; Zhang, Yong‐Lai; Liu, Yan; Liu, Yu‐Qing; Jiang, Hao‐Bo; Han, Bing; Fu, Xiu‐Yan; Ding, Hong; Xu, Huai‐Liang; Sun, Hong‐Bo
- Abstract
Inspired by natural autonomous systems that demonstrate controllable shape, appearance, and actuation under external stimuli, a facile preparation of moisture responsive graphene-based smart actuators by unilateral UV irradiation of graphene oxide (GO) papers is reported. UV irradiation of GO is found to be an effective protocol to trigger the reduction of GO; however, due to the limited light transmittance and thermal relaxation, thick GO paper cannot be fully reduced. Consequently, by tuning the photoreduction gradient, anisotropic GO/reduced GO (RGO) bilayer structure can be easily prepared toward actuation application. To get better control over the responsive properties, GO/RGO bilayer paper with a certain curvature and RGO patterns are successfully prepared for actuator design. As representative examples, smart humidity-driven graphene actuators that mimic the cilia of respiratory tract and tendril climber plant are successfully developed for controllable objects transport.
- Subjects
GRAPHENE oxide; IRRADIATION; PHOTOREDUCTION; ACTUATORS; MATERIALS science
- Publication
Advanced Functional Materials, 2015, Vol 25, Issue 28, p4548
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201501511