title: Direct visualization of spatiotemporal structure of self-assembled colloidal particles in electrohydrodynamic flow of a nematic liquid crystal.
abstract: Characterization of spatiotemporal dynamics is of vital importance to soft matter systems far from equilibrium. Using a confocal laser scanning microscopy, we directly reveal three-dimensional motion of surface-modified particles in the electrohydrodynamic convection of a nematic liquid crystal. Particularly, visualizing a caterpillar-like motion of a self-assembled colloidal chain demonstrates the mechanism of the persistent transport enabled by the elastic, electric, and hydrodynamic contributions. We also precisely show how the particles' trajectory is spatially modified by simply changing the surface boundary condition.
authors.affiliation: †Division of Applied Physics, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Sasaki
authors.affiliation: †Division of Applied Physics, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
authors.forename: Hikaru
authors.initials: H
authors.lastname: Hoshikawa
authors.affiliation: †Division of Applied Physics, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Seto
authors.affiliation: †Division of Applied Physics, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Kobayashi
authors.affiliation: ‡Max Planck Institute for Dynamics and Self-Organization (MPIDS), 37077 Göttingen, Germany.
authors.forename: V S R
authors.initials: VS
authors.lastname: Jampani
authors.affiliation: ‡Max Planck Institute for Dynamics and Self-Organization (MPIDS), 37077 Göttingen, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Herminghaus
authors.affiliation: ‡Max Planck Institute for Dynamics and Self-Organization (MPIDS), 37077 Göttingen, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Bahr
authors.affiliation: †Division of Applied Physics, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Orihara