Thermodynamic model of electric-field-induced pattern formation in binary dielectric fluids
Abbreviated Journal Title
Phys. Rev. E
SPINODAL DECOMPOSITION; PHASE-SEPARATION; EQUILIBRIUM; SYSTEMS; Physics, Fluids & Plasmas; Physics, Mathematical
An electric-field-induced phase transition and pattern formation in a binary dielectric fluid layer are studied using a coarse-grained free-energy functional. The electrostatic part of the free energy is a nonlinear functional of the dielectric function, which depends in turn on the local colloidal concentration. We determine the phase coexistence curve and find that beyond a critical electric field the system phase separates. Accompanying the phase separation are patterns similar to those observed in a spinodal decomposition of an ordinary binary fluid. The temporal evolution of the phase separating patterns are discussed both analytically and numerically by integrating a Cahn-Hilliard type of equation.
Physical Review E
"Thermodynamic model of electric-field-induced pattern formation in binary dielectric fluids" (2004). Faculty Bibliography 2000s. 4465.