Moisture-responsive graphene paper prepared by self-controlled photoreduction.

Han, Dong-Dong; Zhang, Yong-Lai; Jiang, Hao-Bo; Xia, Hong; Feng, Jing; Chen, Qi-Dai; Xu, Huai-Liang; Sun, Hong-Bo · Adv Mater · 2015

basic_science · Level V

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Abstract

A facile and cost-effective preparation of moisture-responsive graphene bilayer paper by focused sunlight irradiation is reported. The smart graphene paper shows moisture-responsive properties due to selective adsorption of water molecules, leading to controllable actuation under humid conditions. In this way, graphene-based moisture-responsive actuators including a smart claw, an orientable transporter, and a crawler paper robot are successfully developed.