Fig. 4. (a) Effective horizontal (read in the left y-axis) and vertical (read in the right y-axis) component of electrostatic force, Fel, calculated over the entire surface of the droplet, as a function of the electrowetting number, η. (b) The ratio of the horizontal component of the electrostatic force over the total electric force, Felr/Fel (%), calculated at the vicinity of the TPL, for selected values of dielectric thickness, d, for η = 0.8. (Arrows are placed in (a) as a guide to the eye).
