Packing frustration in dense confined fluids

Criticality in confined ionic fluids.

A theory of a confined two-dimensional electrolyte is presented. The positive and negative ions, interacting by a 1/r potential, are constrained to move on an interface separating two solvents with dielectric constants epsilon(1) and epsilon(2). It is shown that the Debye-Hückel type of theory predicts that this two-dimensional Coulomb fluid should undergo a phase separation into a coexisting l...

Configurational temperature profile in confined fluids. II. Molecular fluids

Hydrodynamics of confined active fluids.

We theoretically describe the dynamics of swimmer populations in rigidly confined thin liquid films. We first demonstrate that hydrodynamic interactions between confined swimmers depend solely on their shape and are independent of their specific swimming mechanism. We also show that, due to friction with the nearby rigid walls, confined swimmers do not just reorient in flow gradients but also i...

Simulating Confined Fluids in Nanoporous Materials

If people could shrink themselves down and enter the world of nanoporous materials—solid materials like activated carbon or porous glasses that have pores of nanometer size—they would encounter exotic phenomena that were quite unexpected on the basis of everyday experience. Even thermodynamic properties thought of as constant such as the freezing point of water can be markedly depressed when fl...

Hydrodynamic fluctuation-induced forces in confined fluids.

We study thermal, fluctuation-induced hydrodynamic interaction forces in a classical, compressible, viscous fluid confined between two rigid, planar walls with no-slip boundary conditions. We calculate hydrodynamic fluctuations using the linearized, stochastic Navier-Stokes formalism of Landau and Lifshitz. The mean fluctuation-induced force acting on the fluid boundaries vanishes in this syste...