Bowers, J.; Zarbakhsh, A.; Christenson, H.K.; McLure, I.A.; Webster, J.R.P.; Steitz, R.: Neutron reflectivity studies of critical adsorption: behaviour of the surface scaling function. Physical Review E 72 (2005), p. 041606/1-7
10.1103/PhysRevE.72.041606
Abstract:
Neutron reflectometry has been employed to examine the nature of the critical adsorption surface scaling function for a near-critical mixture of hexane-d14+perfluorohexane adsorbing to a solid substrate from the liquid one-phase region. The analysis method of Dietrich and Schack has been applied to examine the nature of the power-law part of the critical adsorption surface scaling function, which has been found to behave as m(z)~P0z^−m as the critical point is approached. Values of m =0.514±0.018 and P0=0.90±0.04 have been obtained. These values are consistent with theoretical expectations (mth=0.516±0.004; P0th=0.94±0.05), the value determined from Monte Carlo simulations (P0MC=0.866), and other experimental determinations (P0ex=0.955±0.08).