Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2008-12-03
Physics
Condensed Matter
Soft Condensed Matter
18 pages, 11 figures, accepted for publication in The Journal of Chemical Physics
Scientific paper
10.1063/1.3054346
We show that to account for the full spectrum of surface fluctuations from low scattering vector qd << 1 (classical capillary wave theory) to high qd > 1 (bulk-like fluctuations), one must take account of the interface's bending rigidity at intermediate scattering vector qd = 1, where d is the molecular diameter. A molecular model is presented to describe the bending correction to the capillary wave model for short-ranged and long-ranged interactions between molecules. We find that the bending rigidity is negative when the Gibbs equimolar surface is used to define the location of the fluctuating interface and that on approach to the critical point it vanishes proportionally to the interfacial tension. Both features are in agreement with Monte Carlo simulations of a phase-separated colloid-polymer system.
No associations
LandOfFree
On the spectrum of fluctuations of a liquid surface: From the molecular scale to the macroscopic scale does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the spectrum of fluctuations of a liquid surface: From the molecular scale to the macroscopic scale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the spectrum of fluctuations of a liquid surface: From the molecular scale to the macroscopic scale will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-625190