Capillary levelling of immiscible bilayer films

Dewetting in immiscible polymer bilayer films

J. Lal,1,2,3 S. Malkova,2 M. K. Mukhopadhyay,4 S. Narayanan,1 A. Fluerasu,5 S. B. Darling,6 L. B. Lurio,3 and M. Sutton7 1X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA 2Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne, Illinois 60439, USA 3Department of Physics, Northern Illinois University, DeKalb, Illinois 60115, USA 4Department of Physic...

Capillary levelling of a cylindrical hole in a viscous film.

The capillary levelling of cylindrical holes in viscous polystyrene films was studied using atomic force microscopy as well as quantitative analytical scaling arguments based on thin film theory and self-similarity. The relaxation of the holes was shown to consist of two different time regimes: an early regime where opposing sides of the hole do not interact, and a late regime where the hole is...

Dynamics of immiscible-fluid displacement in a capillary tube.

Capillary deformations of bendable films.

We address the partial wetting of liquid drops on ultrathin solid sheets resting on a deformable foundation. Considering the membrane limit of sheets that can relax compression through wrinkling at negligible energetic cost, we revisit the classical theory for the contact of liquid drops on solids. Our calculations and experiments show that the liquid-solid-vapor contact angle is modified from ...

Capillary wrinkling of floating thin polymer films.

A freely floating polymer film, tens of nanometers in thickness, wrinkles under the capillary force exerted by a drop of water placed on its surface. The wrinkling pattern is characterized by the number and length of the wrinkles. The dependence of the number of wrinkles on the elastic properties of the film and on the capillary force exerted by the drop confirms recent theoretical predictions ...