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Updated: Feb 5, 2026

Preparation of Free-Surface Hyperbolic Water Vortices
Published on: July 28, 2023
A surface transition of nanoparticle-decorated graphene films from water-adhesive to water-repellent
Shu Wan1, Hao Wan, Hengchang Bi
1SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing 210096, P. R. China. honesty1983@163.com slt@seu.edu.cn.
Abstract:
Herein, a facile strategy is introduced to realize the transition of graphene films from a water-adhesion surface (adhesive pressure of 541.5 Pa) to a water-repellent surface (adhesive pressure of ∼0 Pa) via decoration of carbon nanoparticles. Cassie impregnating wetting state and Cassie state are used to explain highly adhesive effect and strong repelling effect, respectively. Droplet impacting experiments demonstrate that the as-prepared graphene films have a stable structure, which is beneficial for their applications.
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