Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2009-09-04
Physics
Condensed Matter
Soft Condensed Matter
11 pages, 3 figures
Scientific paper
Liquid water, at ambient conditions, has short-range density correlations which are well known in literature. Surprisingly, large scale molecular dynamics simulations reveal an unusually long-distance correlation in `longitudinal' part of dipole-dipole orientational correlations. It is non-vanishing even at 75 \AA{} and falls-off exponentially with a correlation length of about 24 \AA{} beyond solvation region. Numerical evidence suggests that the long range nature of dipole-dipole correlation is due to underlying fluctuating network of hydrogen-bonds in the liquid phase. This correlation is shown to give a shape dependant attraction between two hydrophobic surfaces at large distances of separation and the range of this attractive force is in agreement with experiments. In addition it is seen that quadrupolar fluctuations vanish within the first solvation peak (3 \AA{})
Anishetty Ramesh
Pradeep Kanth Jampa Maruthi
Vemparala Satyavani
No associations
LandOfFree
Long Distance Correlations in Molecular Orientations of Liquid Water and Shape Dependant Hydrophobic Force 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 Long Distance Correlations in Molecular Orientations of Liquid Water and Shape Dependant Hydrophobic Force, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long Distance Correlations in Molecular Orientations of Liquid Water and Shape Dependant Hydrophobic Force will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-35541