Ultralow Voltage Electrowetting on a Solidlike Ionic-Liquid Dielectric Layer


  • This research is partially supported by the University of Kentucky faculty start-up fund. X. Zhang thanks the support from the Chinese Government Scholarship and the Kentucky Opportunity Fellowship.


original image

Electrowetting was achieved on an ionic-liquid-coated (IL) dielectric layer at a driving voltage of just 70 mV and 5 V in AC and DC mode, respectively. AFM studies suggest that the high capacitance density of the ionic-liquid dielectric layer is the reason for the low voltage electrowetting (see picture; OTS=octadecyltrichlorosilane).