Laser-induced jigsaw-like graphene structure inspired by Oxalis corniculata Linn.leaf

查看全文 作　　者：Wentao [1]Wang;Longsheng [1]Lu;Xiaoyu [1]Lu;Zhanbo [1]Liang;Biao [2]Tang;Yingxi [1]Xie

机构地区：[1]School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China;[2]Guangdong Provincial Key Laboratory of Optical Information Materials and Technology,South China Normal University,Guangzhou 510006,China

出　　处：《Bio-Design and Manufacturing》索引2022年第5卷第4期,共14页

基　　金：supported by the Natural Science Foundation of Guangdong Province, China (No.2021B1515020087);the National Natural Science Foundation of China (No.51905178)。 摘　　要：The laser scribing of polyimide(PI, Kapton) film is a new, simple and effective method for graphene preparation. Moreover,the superhydrophobic surface modification can undoubtedly widen the application fields of graphene. Herein, inspired by the hydrophobic and self-cleaning properties of natural Oxalis corniculata Linn. leaves, we propose a novel bionic manufacturing method for superhydrophobic laser-induced graphene(LIG). By tailoring the geometric parameters(size, roughness and height/area ratio) and chemical composition, the three-dimensional(3D) multistage LIG, i.e., with micro-jigsaw-like and porous structure, can deliver a static water contact angle(WCA) of 153.5° ± 0.6°, a water sliding angle(WSA) of 2.5° ±0.5°, and great superhydrophobic stability lasting for 100 days(WCAs ≈ 150°). This outstanding water repellency is achieved by the secondary structure of jigsaw-like LIG, a porous morphology that traps air layers at the solid–liquid interface. The robust self-cleaning and anti-stick functions of 3D bionic and multistage LIG are demonstrated to confirm its great potential in wearable electronics. 关键词：Laser-induced graphene Oxalis corniculata Linn BIONIC Multistage structure Superhydrophobic surface

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Laser-induced jigsaw-like graphene structure inspired by Oxalis corniculata Linn.leaf

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