Han Yingkuan, Han Yunrui, Huang Yuzhen, Wang Chao, Liu Hong, Han Lin, Zhang Yu
Institute of Marine Science and Technology, Shandong University, Qingdao, 266000, China.
State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, Jinan, Shandong, 250100, China.
Small Methods. 2022 Apr;6(4):e2200096. doi: 10.1002/smtd.202200096. Epub 2022 Feb 24.
The fabrication and applications of superhydrophobic surfaces (contact angle >150°, sliding angle <10°) have attracted worldwide interest with respect to materials and devices. In this work, the laser-induced graphene (LIG) superhydrophobic surface transition from pinning to rolling via an extremely simple solvent treatment of LIG in air is reported. By adding a certain solvent (e.g., ethanol) to the surface, the LIG superhydrophobic surface changes from pinning (sliding angle = 180°) to rolling (sliding angle <6°), which is attributed to the chemically changed surface properties and surface morphology of LIG. Three applications are demonstrated with the developed superhydrophobic LIG, including surface-enhanced Raman spectroscopy, water-oil separation, and anti-icing.
超疏水表面（接触角>150°，滑动角<10°）的制备及应用在材料和器件方面引起了全球关注。在这项工作中，报道了通过在空气中对激光诱导石墨烯（LIG）进行极其简单的溶剂处理，使其超疏水表面从钉扎状态转变为滚动状态。通过向表面添加某种溶剂（如乙醇），LIG超疏水表面从钉扎状态（滑动角 = 180°）转变为滚动状态（滑动角<6°），这归因于LIG表面性质和表面形态的化学变化。利用所制备的超疏水LIG展示了三种应用，包括表面增强拉曼光谱、水油分离和防冰。
