Mesoscopic modelling of droplets on topologically patterned substrates

TL;DR

This paper introduces a lattice Boltzmann model to simulate droplet spreading on patterned surfaces, demonstrating significant contact angle enhancement due to topological patterning, relevant for superhydrophobic applications.

Contribution

The study develops a novel lattice Boltzmann approach to model droplet behavior on topologically patterned substrates, highlighting the impact of micro-scale patterning on wettability.

Findings

Contact angle increased from 110° to 156° due to patterning

Model accurately captures droplet spreading dynamics

Patterning significantly enhances superhydrophobicity

Abstract

We present a lattice Boltzmann model to describe the spreading of droplets on topologically patterned substrates. We apply it to model superhydrophobic behaviour on surfaces covered by an array of micron-scale posts. We find that the patterning results in a substantial increase in contact angle, from $110^o$ to $156^o$.