Pristine graphene oxide film-based contactless actuators driven by electrostatic forces,Journal of Materials Chemistry C

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Pristine graphene oxide film-based contactless actuators driven by electrostatic forces
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-09-07 00:00:00 , DOI: 10.1039/c7tc03043f
Yi He _{1,

2,

3,

4,

5} , Yajuan Sun _{3,

6,

7} , Zhe Wang _{1,

2,

3} , Shaoyang Ma _{1,

2,

3} , Nan Zhang _{1,

2,

3} , Jing Zhang _{1,

2,

3} , Siowling Soh _{3,

6,

7} , Lei Wei _{1,

2,

3}

Affiliation

Graphene oxide (GO)-based actuators provide a material-centered mechanism to enable a broad range of promising applications, especially in artificial muscles, sensors, switches, and energy harvesting devices. However, the current fabrication methods of such actuators require the complicated synthesis of GO-based composites that inevitably break the intrinsic structure of GO. Moreover, the obtained actuators are commonly driven by a strong external stimulus (light, moisture, or electricity) with unavoidable direct contact, which results in the decomposition of the GO-based composites, and thus reduces the device lifetime. To address the aforementioned challenges and limitations, we demonstrate a simple and generic electrostatic actuation principle for the design and fabrication of pristine GO film-based contactless actuators with a fast actuation response, good reversible actuation, and high stability. The resulting GO film-based actuators can be driven easily by almost all commonly charged objects. Two applications are demonstrated, one is a smart “radar” made by a 3 × 3 GO film strip array for tracking the motion of objects, and the other one is GO film-based “dancers” obtained from Chinese paper-cuts. The presented contactless actuation principle and the simple fabrication process open a new avenue for the design and development of GO-based actuators, which can be easily extended to the fabrication of other smart devices for motion detection or energy harvesting.

更新日期：2017-09-15

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