title: Nanoroughness, intrinsic density profile, and rigidity of the air-water interface.
abstract: From large-scale molecular dynamics simulations of the free water surface the capillary wave spectrum is obtained and analyzed in terms of a wave vector dependent surface tension. The bending rigidity is positive but suggested to change sign in the presence of long-range dispersive interactions. Nanoroughness and capillary waves give rise to a scale-dependent density profile that displays minimal broadening at a nanometer scale which defines the intrinsic density profile.
authors.affiliation: Physik Department, Technische Universität München, 85748 Garching, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Sedlmeier
authors.forename: Dominik
authors.initials: D
authors.lastname: Horinek
authors.forename: Roland R
authors.initials: RR
authors.lastname: Netz