Capillary condensation in a pore-like geometry

TL;DR

This paper investigates how wetting affects capillary condensation in pore-like geometries using an extended Corner Transfer Matrix Renormalization Group method applied to a 2D Ising model, revealing similar scaling laws with different prefactors.

Contribution

It extends the CTMRG method to study wetting effects on capillary condensation in confined geometries, comparing different boundary conditions.

Findings

Coexistence line shift follows the same scaling powers in both geometries.

Prefactors of the shift differ between geometries.

Results confirm the universality of the scaling powers.

Abstract

We study the influence of wetting on the capillary condensation for a simple fluid in a pore-like geometry, where the reference system is an infinitely long slit. The Corner Transfer Matrix Renormalization Group method has been extended to study a two-dimensional Ising model confined in an L x L geometry with equal surface fields. Our results have confirmed that in both geometries the coexistence line shift is governed by the same scaling powers, but their prefactors are different.