Fig. 5: Connecting to dielectrowetting experiments.
The electrostatic potential from interdigitated electrodes, shown schematically in (a), decays exponentially. Applying this potential symmetrically from both confining walls in a slit geometry with H ≈ 16 σ enhances wetting of the solid-liquid interface, as can be seen in the density profiles (left) and changes in local compressibility (right) in (b) (both quantities are normalized by their bulk values). c Electrostatic free energy per unit area from cDFT (inset) exhibits a quadratic dependence on ϕ0, enabling reconstruction of the contact angle via Eq. (2) (assuming θ0 = 160° and using γlv = 0.025 J m−2 computed from direct coexistence simulation), in direct analogy with dielectrowetting experiments18,20.
