Ising model fog drip: the first two droplets

TL;DR

This paper introduces a simple model for phase coexistence that explains how solid droplets form spontaneously on an interface when vapor reaches dew-point, illustrating a fundamental process in phase transition.

Contribution

The paper presents the first model describing the spontaneous formation of solid droplets on an interface at dew-point conditions.

Findings

Solid droplet formation occurs spontaneously at dew-point.

The model captures coexistence of solid and vapor phases.

Droplets grow by adding a monolayer at the interface.

Abstract

We present here a simple model describing coexistence of solid and vapour phases. The two phases are separated by an interface. We show that when the concentration of supersaturated vapour reaches the dew-point, the droplet of solid is created spontaneously on the interface, adding to it a monolayer of a visible size.