(Peer-Reviewed) Carnivorous plants inspired shape-morphing slippery surfaces
Dong-Dong Han 韩冬冬 ¹, Yong-Lai Zhang 张永来 ¹, Zhao-Di Chen 陈招弟 ¹, Ji-Chao Li 李纪超 ¹, Jia-Nan Ma 马佳楠 ¹, Jiang-Wei Mao 毛江维 ¹, Hao Zhou ¹, Hong-Bo Sun 孙洪波 ²
¹ State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
中国 长春 吉林大学电子科学与工程学院 集成光电子学国家重点实验室
² State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
中国 北京 清华大学精密仪器系 精密测试技术及仪器国家重点实验室
Opto-Electronic Advances, 2022-08-25
Carnivorous plants, for instance, Dionaea muscipula and Nepenthes pitcher plant, inspired the innovation of advanced stimuli-responsive actuators and lubricant-infused slippery surfaces, respectively. However, hybrid bionic devices that combine the active and passive prey trapping capabilities of the two kinds of carnivorous plants remain a challenge. Herein, we report a moisture responsive shape-morphing slippery surface that enables both moisture responsive shape-morphing and oil-lubricated water repellency for simultaneous active- and passive-droplet manipulation.
The moisture deformable slippery surface is prepared by creating biomimetic microstructures on graphene oxide (GO) membrane via femtosecond laser direct writing and subsequent lubricating with a thin layer of oil on the laser structured reduced GO (LRGO) surface. The integration of a lubricant-infused slippery surface with an LRGO/GO bilayer actuator endows the actuator with droplet sliding ability and promotes the moisture deformation performance due to oil-enhanced water repellency of the inert layer (LRGO).
Based on the shape-morphing slippery surface, we prepared a series of proof-of-concept actuators, including a moisture-response Dionaea muscipula actuator, a smart frog tongue, and a smart flower, demonstrating their versatility for active/passive trapping, droplet manipulation, and sensing.
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