Dynamics of liquid nanothreads: Fluctuation-driven instability and rupture
Chengxi Zhao, Duncan A. Lockerby, James E. Sprittles
Abstract
The influence of thermal fluctuations on the dynamics of nanoscale liquid threads is investigated using both molecular dynamics (MD) and a stochastic lubrication equation (SLE) derived from fluctuating hydrodynamics. These methods recover a range of breakup profiles, including the `double cone', and we quantify their occurrence statistics. The SLE is about 5000 times faster than MD and permits access to a broader range of parameters. We use it to probe the final stages of rupture and compare to proposed similarity solutions, showing its usefulness for investigating nanoscale interfacial flows.
Topics & Concepts
InstabilityBreakupMolecular dynamicsStatistical physicsThermal fluctuationsNanoscopic scaleRange (aeronautics)Dynamics (music)LubricationMechanicsMaterials sciencePhysicsNanotechnologyThermodynamicsAcousticsComposite materialQuantum mechanicsFluid Dynamics and Heat TransferFluid Dynamics and Thin FilmsElectrohydrodynamics and Fluid Dynamics