Electrowetting on Insulator Coated Electrodes

Electrocapillary effect Electrowetting on dielectric (EWOD) Electrowetting on insulator-coated electrodes (EICE) Electrowetting on line electrodes (ELE)... 

Strictly, the term electrocapillarity therefore refers to the change in the solid or liquid metal-electrolyte interfacial tension, as shown in Eig. la. Eor the principle to be practical, however, it was necessary to avoid electrolysis of the aqueous solution. This was later overcome by coating the electrode surface with a thin dielectric layer (e. g., polymer substrate) several microns to millimeters in thickness, from which the term electrowetting-on-dielectric (EWOD) or electrowetting on insulator coated electrodes (EICE) arises [1], as shown in Figs, lb and Ic. In cases where the insulating layer is not hydrophobic (e. g., parylene), a very thin hydrophobic layer such as a fluoropolymer of order nanometers in thickness, is coated onto the insulator. 

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