斜格
热的
概括性
机械
稳健性(进化)
电
材料科学
固体表面
方向性
计算机科学
气象学
工程类
物理
电气工程
化学
化学物理
基因
哲学
生物
生物化学
遗传学
语言学
心理治疗师
心理学
作者
Ran Tao,Guoqiang Liang,Binhong Dou,Jun Wu,Bing Li,Chonglei Hao
标识
DOI:10.1016/j.xcrp.2021.100721
摘要
Despite extensive efforts in approaching the theoretical limit of solid-liquid contact time, the vertical bouncing droplet eventually lands on the impact spot of horizontally placed surfaces, which makes the liquid removal inefficient and thus limits its practical applications. To address this challenge, we use superhydrophobic surfaces consisting of regularly patterned pillars with an inclined Janus structure and report a phenomenon that involves synergistic effects of both pancake rebound and directional transport in one bouncing cycle, contributing to the reduction of contact time and the lateral removal of impacting droplets simultaneously. We generalize this particular regime to a broad range of working environments with various thermal conditions and impact velocities, demonstrating the robustness of water repellency and the directionality of liquid motion. The unusual bouncing performance, generality, and practicability of our work may provide useful insights into various applications, including electricity generation, self-cleaning, defogging, and anti-icing.
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