Moisture-activated torsional graphene-fiber motor.

Cheng, Huhu; Hu, Yue; Zhao, Fei; Dong, Zelin; Wang, Yanhong; Chen, Nan; Zhang, Zhipan; Qu, Liangti · Adv Mater · 2014

basic_science · Level V

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Abstract

A new type of moisture-driven rotational motor is developed using a helical arrangement of graphene sheets along a graphene oxide fiber, which not only presents remarkable performance as a reversible rotary motor with a rotary speed of up to about 5200 revolutions per minute under humidity alternation, but also allows the construction of humidity switches and promising moisture-triggered electric generators.