title: Reversibility of electrowetting on hydrophobic surfaces and dielectrics under continuous applied DC voltage.
abstract: Various properties of electrowetting such as reversibility, reproducibility and mobility have been investigated experimentally. A conductive water drop on a thin hydrophobic film of amorphous fluropolymers coated on the counter electrode showed unexpectedly the poor reversibility under the discontinuous voltage, so called the contact angle hysteresis. The hysteresis could not been completely suppressed by inserting additionally a thick parylene-C film which has the high dielectric constant and no pinholes. However, both the reversibility and the reproducibility have been enhanced under the continuous voltage starting from the highest absolute electric potential.
authors: Department of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 121-742, Korea.
authors: Oh-Sun
authors: OS
authors: Kwon
authors: Minkyu
authors: M
authors: Kim
authors: Taeyun
authors: T
authors: Kim
authors: Chanho
authors: C
authors: Lee
authors: Sungjin
authors: S
authors: Han
authors: Jae-Yong
authors: JY
authors: Kim
authors: Chan-Hee
authors: CH
authors: Jung
authors: Jae-Hak
authors: JH
authors: Choi
authors: Kwanwoo
authors: K
authors: Shin
mesh_terms: D004560:Electricity; D018625:Microscopy, Atomic Force; D017155:Wettability