Superhydrophobic, antiadhesive, and antireflective surfaces mediated by hybrid biomimetic salvinia leaf with moth-eye structures

Abstract

In this paper, we successfully demonstrate multifunctional surfaces based on scaffolding biomimetic structures, namely, hybrid salvinia leaves with moth-eye structures (HSMSs). The novel fabrication process employs scalable polystyrene nanosphere lithography and a lift-off process. Systematic characterizations show the biomimetic HSMS exhibiting superhydrophobic, self-cleaning, antiadhesive, and antireflective properties. Furthermore, the resulting surface tension gradient (known as the Marangoni effect) leads to a superior air retention characteristic in the HSMS under water droplet impact, compared with the traditional hybrid lotus leaf with a moth-eye structure (HLMS). Such results and learnings pave the way towards the attainment and mass deployment of dielectric surfaces with multiple functionalities for versatile biological and optoelectronic applications.

Mechanically Robust Superhydrophobic Steel Surface with Anti-Icing, UV-Durability, and Corrosion Resistance Properties

“…Superhydrophobic surfaces have attracted tremendous scientific interest. Inspired by the lotus, − salvinia, , water-strider legs, , rose petals, , and gecko’s feet, , a number of surfaces with special wetting behavior have been developed. These surfaces, which have static contact angle above 150°, promise a wide range of potential applications in self-cleaning, − anti-icing, , anticorrosion, , oil/water separation, − medical science, , drag reduction in fluid flow, , etc.…”

Two‐Step Fabrication of Durable, Flexible, and Fluorine‐Free Superhydrophobic SiO2‐Silane@Fabric for Self‐Cleaning Application

“…Manifested by many natural surfaces such as lotus leaves, water‐strider legs, butterfly wings, and so on, [1–8] superhydrophobic surfaces with water contact angles larger than 150° and water sliding angles lower than 10° have gained much attention because of their engineering and industrial importance in day to day life [9–10] . Recently, flexible superhydrophobic substrates like fabrics have received tremendous attention due to breathability, lightweight, the abundance, inexpensiveness of the raw materials, and numerous applications such as umbrellas, shade shelters, camps, garments, work clothing, home textiles, and advertisement materials [11–12] .…”

Evaluation of Scratch Durability of Moth-eye Structures Made of High Hardness Ultraviolet Curable Resin

“…ARS films made of conventional resin are subject to scratching and dirt adhesion upon physical contact. A newly developed ultraviolet (UV) curable epoxy resin with high hardness (9H: pencil hardness) and antifouling properties was developed for ARS films to overcome these problems [3][4][5][6][7]. However, this newly developed resin has a strong adhesive force.…”