Electrohydrodynamic instabilities in freely suspended viscous films under normal electric fields

Electrohydrodynamic Instabilities in Thin Polymer Films

Glass transitions of freely suspended polymer films

We present a modified version of our " sliding model " , where chain arcs, between two contacts at the surface, may move if all the barriers along the arc are weaker than a certain threshold. An important advance of the revised model is that the high limiting chain lengths N * observed in the experiments (N * ∼ 10 4) are naturally accounted for. In this model, a film of thickness h < 2R 0 (wher...

Numerical Simulation of Deformation / Motion of a Drop Suspended In Viscous Liquids Under Influence of Steady Electric Fields

The deformation / motion of a droplet suspended in a viscous liquid under the influence of an applied external electrical field are investigated through numerical simulations. The two-phase flow field of the drop suspension system is simulated using a front tracking / finite volume method for solving the full Navier-Stokes equations. Three different electric field models are applied in order to...

Creasing-wrinkling transition in elastomer films under electric fields.

Creasing and wrinkling are different types of instabilities on material surfaces characterized by localized singular folds and continuously smooth undulation, respectively. While it is known that electric fields can induce both types of instabilities in elastomer films bonded on substrates, the relation and transition between the field-induced instabilities have not been analyzed or understood....

Plasma instabilities in high electric fields.