Title :
Effect of electrode geometry on voltage reduction in EWOD based devices
Author :
Das, Debanjan ; Das, Soumen ; Biswas, Karabi
Author_Institution :
Dept. of Electr. Eng., IIT Kharagpur, Kharagpur, India
Abstract :
Electrowetting (EW) has been used sophistically in the fields of biomedical and optical applications. The major problem posing challenge in EW is to reduce its operating voltage. The study consist of understanding the effect of device parameters that affect EW phenomenon to reduce the actuation voltage with optimum velocity. Using EDEW 2.0 simulation tools and Surface Evolver software EW is simulated. By varying the different parameters (electrode length, gap between electrodes, dielectric thickness, shape of electrode edge and dielectric constant) the corresponding energy curves (surface energy versus centroid position) are obtained. The main goal is to reduce the voltage. It is observed that voltage bears inverse relation with the surface energy and thus actuation voltage can be reduced by reducing the surface energy. There is direct influence of Electrode´s parameters in reducing the surface energy.
Keywords :
dielectric devices; electric potential; electrodes; surface energy; wetting; EDEW 2.0 simulation tools; EWOD based devices; actuation voltage; device parameters; electrode geometry effect; electrowetting; surface energy; surface evolver software; voltage reduction; Educational institutions; Electrodes; Insulators; Polymers; EDEW; EWOD; Electrowetting; Surface Evolver; surface energy;
Conference_Titel :
Systems in Medicine and Biology (ICSMB), 2010 International Conference on
Conference_Location :
Kharagpur
Print_ISBN :
978-1-61284-039-0
DOI :
10.1109/ICSMB.2010.5735406