Robust, transparent, superhydrophobic coatings using novel hydrophobic/hydrophilic dual-sized silica particles.

ABSTRACT:

Hypothesis

The superhydrophobic lotus leaf has dual-scale surface structures, that is, nano-bumps on micro-mountains. Large hydrophilic particles, due to its high surface energy and weight, have high affility to substrates and tend to precipitate at the bottom of coating films. Small hydrophobic particles, due to its low surface energy and weight, tends to sit on the top of coating films and form porous structures. To mimic the lotus leaf surface, it may be possible to develop dual-sized particle films, in which small particles are decorated on large particles.

Experiments

A one-step spin coating of a mixture of dual-sized silica particles (55/200 nm) was used. Epoxy resin was added to improve the adhesion of particle films. The single-sized and dual-sized particle films wer

SUBMITTER: Zhao X 

PROVIDER: S-EPMC7256315 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature