title: Competition between collapse and breakup in nanometer-sized thin rings using molecular dynamics and continuum modeling.
abstract: We consider nanometer-sized fluid annuli (rings) deposited on a solid substrate and ask whether these rings break up into droplets due to the instability of Rayleigh-Plateau-type modified by the presence of the substrate, or collapse to a central drop due to the presence of azimuthal curvature. The analysis is carried out by a combination of atomistic molecular dynamics simulations and a continuum model based on a long-wave limit of Navier-Stokes equations. We find consistent results between the two approaches, and demonstrate characteristic dimension regimes which dictate the assembly dynamics.
authors.affiliation: National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States.
authors.forename: Trung Dac
authors.initials: TD
authors.lastname: Nguyen
authors.forename: Miguel
authors.initials: M
authors.lastname: Fuentes-Cabrera
authors.forename: Jason D
authors.initials: JD
authors.lastname: Fowlkes
authors.forename: Javier A
authors.initials: JA
authors.lastname: Diez
authors.forename: Alejandro G
authors.initials: AG
authors.lastname: González
authors.forename: Lou
authors.initials: L
authors.lastname: Kondic
authors.forename: Philip D
authors.initials: PD
authors.lastname: Rack