Related Experiment Video
Updated: Aug 5, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
Published on: May 20, 2014
A density-functional theory study of the confined soft ellipsoid fluid
David L Cheung1, Friederike Schmid
1Theoretische Physik, Universitat Bielefeld, D-33615 Bielefeld, Germany.
Abstract:
A system of soft ellipsoid molecules confined between two planar walls is studied using classical density-functional theory. Both the isotropic and nematic phases are considered. The excess free energy is evaluated using two different Ansätze and the intermolecular interaction is incorporated using two different direct correlation functions (DCF's). The first is a numerical DCF obtained from simulations of bulk soft ellipsoid fluids and the second is taken from the Parsons-Lee theory. In both the isotropic and nematic phases the numerical DCF gives density and order parameter profiles in reasonable agreement with simulation. The Parsons-Lee DCF also gives reasonable agreement in the isotropic phase but poor agreement in the nematic phase.
Related Concept Videos
Density
Density and Archimedes' Principle
Characteristics of Fluids
Characteristics of Fluids
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
Density, Specific Weight, Specific Gravity and Compressibility of Fluid
Specific weight represents the weight per unit volume and is calculated by multiplying density...
Dimensionless Groups in Fluid Mechanics

