Abstract
Fluorinated polymers, the most extensively used hydrophobic surface materials for electrowetting (EW) devices, are expensive and have potential risks to health and environment. In this paper, EW devices fabricated with non-fluorinated hydrophobic surfaces are demonstrated by using a polysiloxane-modified polyacrylate (BYK® Silclean® 3700, Louisville, KY). Water contact angle, which is the most critical parameter of EW devices, changes from ~165° to ~95° with a negligible hysteresis (~3°) when a 42 V AC voltage is applied. EW array display prototypes were constructed on the non-fluorinated surface and can be switched reversibly by applying a low voltage difference. These results indicate the promise of this BYK® Silclean® hydrophobic surface for EW devices in electronic readers and other mobile devices.
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