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RESEARCH PRODUCT
Dynamics of a Spreading Nanodroplet: A Molecular Dynamic Simulation
Jacqueline YanevaKurt BinderAndrey MilchevAndrey Milchevsubject
Mean squarechemistry.chemical_classificationPolymers and PlasticsOrganic ChemistryDynamics (mechanics)PolymerRadiusCondensed Matter PhysicsMolecular physicsInorganic ChemistryContact angleMolecular dynamicsSolid substratechemistryMaterials ChemistryPhysical chemistryWettingdescription
The spreading of polymer nanodroplets upon a sudden change from partial to complete wetting on an ideally flat and structureless solid substrate has been studied by molecular dynamic simulations using a coarse-grained bead-spring model of flexible macromolecules. Tanner's law for the growth of the lateral droplet radius {R(f) t 0.1 } is found to hold as long as the droplet does not disintegrate into individually moving chains. The data for the contact angle θ following from Tanner's law correspond to a dependence on time {θ(t) t -0.3 }. Our analysis of the mean square displacements of the polymer centers of mass reveals several dynamic regimes during the process of spreading. PACS numbers: 68.10.Gw, 05.70.Ln, 61.20.Ja, 8.45.Gd.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-09-01 | Macromolecular Theory and Simulations |