Tuesday, July 30, 2013

1307.7669 (Suriyanarayanan Vaikuntanathan et al.)

Putting water on a lattice: The importance of long wavelength density
fluctuations in theories of hydrophobic and interfacial phenomena

Suriyanarayanan Vaikuntanathan, Phillip L Geissler
The physics of air-water interfaces plays a central role in modern theories of the hydrophobic effect. Implementing these theories, however, has been hampered by the difficulty of addressing fluctuations in the shape of such soft interfaces. We show that this challenge is a fundamental consequence of mapping long wavelength density variations onto discrete degrees of freedom. Drawing from studies of surface roughness in lattice models, we account for the resulting nonlinearities simply but accurately. Simulations show that this approach captures complex solvation behaviors quantitatively.
View original: http://arxiv.org/abs/1307.7669

No comments:

Post a Comment