title: Analysis of thickness of a hydrophobic fluoropolymer film based on electrowetting.
abstract: The electrowetting of water drops on a dielectric fluoropolymer film was studied experimentally. The dependence of the contact angles of the water drops on the applied voltage has been well explained in the low-voltage limit by using the classical Young-Lippmann theory. With this theory, the thicknesses of films coated on glass substrates by using a spin-coater were obtained indirectly by fitting the contact angle data and were confirmed by using X-ray reflectometry. The two sets of results showed a good agreement. In addition, we confirmed that the contact angle saturation at high voltage were consistent with Peykov's model.
authors.affiliation: Department of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 121-742, Korea.
authors.forename: Hyojin
authors.initials: H
authors.lastname: Ko
authors.forename: Minh Dinh
authors.initials: MD
authors.lastname: Phan
authors.forename: Dibyendu
authors.initials: D
authors.lastname: Khatua
authors.forename: Chan-Hee
authors.initials: CH
authors.lastname: Jung
authors.forename: Jae-Hak
authors.initials: JH
authors.lastname: Choi
authors.forename: Oh-Sun
authors.initials: OS
authors.lastname: Kwon
authors.forename: Kwanwoo
authors.initials: K
authors.lastname: Shin
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D008422:Materials Testing / Q000379:methods*; D008956:Models, Chemical; D011138:Polytetrafluoroethylene / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D017155:Wettability / Q000528:radiation effects*
chemical_list: D011138:Polytetrafluoroethylene