title: Water droplets' internal fluidity during horizontal motion on a superhydrophobic surface with an external electric field.
abstract: On a superhydrophobic surface, the internal fluidity of water droplets with different volumes (15, 30 microL) and their horizontal motion in an external electric field were evaluated using particle image velocimetry (PIV). For driving of water droplets on a superhydrophobic coating between parallel electrodes, it was important to place them at appropriate positions. Droplets moved with slipping. Small droplets showed deformation that is more remarkable. Results show that the dielectrophoretic force induced the initial droplet motion and that the surface potential gradient drove the droplets after reaching the middle point between electrodes.
authors.affiliation: Kanagawa Academy of Science and Technology, 308 East, Kanagawa Science Park, 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa 213-0012, Japan.
authors.forename: Munetoshi
authors.initials: M
authors.lastname: Sakai
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kono
authors.forename: Akira
authors.initials: A
authors.lastname: Nakajima
authors.forename: Hideki
authors.initials: H
authors.lastname: Sakai
authors.forename: Masahiko
authors.initials: M
authors.lastname: Abe
authors.forename: Akira
authors.initials: A
authors.lastname: Fujishima