ORIENTATION OF A MOLECULAR FLUID NEXT TO A HARD-WALL - THE PERCUS-YEVICK THEORY

The Percus-Yevick (PY) equation for inhomogeneous hard linear molecules is presented and solved. Calculations of the density profile are shown. Despite earlier failures of the PY approximation to predict some kinds of angular properties in homogeneous systems, here we find predictions which are qualitatively correct and quantitatively acceptable. In particular, we find that the molecules near the wall lie parallel to the wall.