Temperature-dependent electrowetting behavior on Teflon AF1600

Abstract In the growing application field of electrowetting (EW), reliable control wetting behavior by an applied voltage is required over a wide temperature range. Despite rising interest EW, only few data are reported in literature on EW as function temperature. this paper, we investigate quasi-static response one most widely used hydrophobic materials, Teflon AF1600, range from 25 to 70 $$\,^{\circ }\mathrm{C}$$ ? C . The contact angle versus analyzed illustrate behavior. results good agreement with friction-adsorption model, which explains (CA) hysteresis temperature-independent friction-like force and temperature-dependent contribution liquid adsorption onto dielectric surface. EW-CAs show small asymmetry respect polarity voltage, might be due temporary reversible charge trapping layer. underline that different effects friction need taken into account predict CA any EW-based scenario. Graphical abstract