Electrokinetic model for electric-field-induced interfacial instabilities
Abstract
Technology based on electric-field-induced instabilities on thin polymer film surfaces has emerged as a promising candidate for soft lithography. Typically, the instability is modeled using the perfect dielectric (PD) or the leaky dielectric (LD) model. These assume the electric diffuse layer to be infinitesimally large or small, respectively. In the present work we conduct stability analysis assuming a PD-electrolyte solution interface. The concentration of ions and, hence, the diffuse layer thickness is in general assumed to be of the same order as the electrolyte film thickness. The PD-LD models are then realized as limiting cases of the ratio of the double layer thickness to the film thickness.
- Publication:
-
Physical Review E
- Pub Date:
- March 2014
- DOI:
- 10.1103/PhysRevE.89.032409
- Bibcode:
- 2014PhRvE..89c2409G
- Keywords:
-
- 68.03.-g;
- 47.57.jd;
- 47.65.-d;
- Gas-liquid and vacuum-liquid interfaces;
- Electrokinetic effects;
- Magnetohydrodynamics and electrohydrodynamics