Fluids absorbed in structured pores

A model of fluids absorbed in a pore with walls patterned with parallel cha nnels is used to demonstrate some of the unity that can be proved to hold b etween the statistical mechanics of fluids absorbed in structured pores and of fluids adsorbed at unstructured walls and at edges/ wedges where walls meet. In particular, the work done to reversibly shear a corrugated pore im mersed in liquid is related to the difference in the density profile struct ure of liquid adsorbed near the edges of the channels. When the channel dim ensions are mesoscopic or macroscopic but the minimum pore width is microsc opic, statistical mechanics generates remarkable links between the surface tension of planar wall-fluid interfaces or, more generally, the solvation f ree energy of a planar pore, and the density profile at the sides of a chan nel wall in the vicinity of edges and wedges.