2015/11/05 by Edward Bormashenko, Bormashenko, Edward, Oleg Gendelman +1
Physics and Astronomy · #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft #physics.chem-ph
paper · pdf · doi:10.48550/arxiv.1511.01704
11 pages, 3 Figures
arxiv created 2015/11/05 · arxiv updated 2015/11/06
The thermodynamics of electrowetting is treated. A general equation of electrowetting is derived from the first principles. It is demonstrated that the well-known Lippmann Equation describes a particular case of electrowetting when the radial derivative of the capacitance of the double layer is constant. The apparent contact angle of electrowetting depends on the gradient of capacity of a double layer in the vicinity of the triple line. The role of the area adjacent to the triple line in constituting the equilibrium apparent contact angle of electrowetting is emphasized.