State Key Laboratory of Polymer Materials Engineering of China , Polymer Research Institute of Sichuan University , Chengdu 610065 , China.
Xi'an Aerospace Composites Research Institute , Xi'an 710025 , China.
ACS Appl Mater Interfaces. 2020 Feb 5;12(5):6727-6735. doi: 10.1021/acsami.9b20672. Epub 2020 Jan 22.
Soft bilayer actuators with a simple fabrication process, diverse molecular alignment, and multistimulus response are displayed in this work. The microchannel method proposed by us can exquisitely program the molecular arrangement. Based on the mismatch in coefficient of thermal expansion (CTE) between graphene oxide (GO) and the azobenzene doped liquid crystal network (ALCN), bilayer actuators can exhibit reversible, rapid, and complex deformations under the control of heat, UV and NIR light. Furthermore, in addition to microchannels, various deformation behaviors of bilayer actuators can also be programmed by directionally arranging GO layers. Smart bilayer membranes can be customized into a range of delicate biomimetic devices, such as bionic butterfly, bionic leaf, and foot robot, promising their numerous applications in biomimetic and intelligent soft robotics fields.
本文展示了具有简单制造工艺、多样分子排列和多刺激响应的软双层致动器。我们提出的微通道方法可以精细地设计分子排列。基于氧化石墨烯（GO）和偶氮苯掺杂液晶网络（ALCN）之间热膨胀系数（CTE）的不匹配，双层致动器可以在热、紫外光和近红外光的控制下，表现出可逆、快速和复杂的变形。此外，除了微通道，双层致动器的各种变形行为也可以通过定向排列 GO 层来编程。智能双层膜可以定制成一系列精细的仿生设备，如仿生蝴蝶、仿生叶片和脚部机器人，有望在仿生和智能软机器人领域得到广泛应用。
