title: Manipulation of liquid filaments on photoresponsive microwrinkles.
abstract: Microwrinkle grooves serve as open microchannel capillaries, where the capillary action depends on the wettability of a liquid on the groove surface. Here, we report the photoinduced capillary action of a liquid in such microwrinkle grooves. The wettability is changed through the irradiation of a photoresponsive microwrinkle surface. By utilizing micropattern light-projection apparatus, we prepare liquid filaments that fill only the microgrooves prescribed by the patterned light, with micrometer-scale spatial resolution. This new technology enables the precise spatial control of liquids on a solid surface, and thus, is applicable in the fields of micropatterning and open-channel microfluidics.
authors.affiliation: Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka, Japan. monobe@ni.aist.go.jp
authors.forename: Hirosato
authors.initials: H
authors.lastname: Monobe
authors.forename: Takuya
authors.initials: T
authors.lastname: Ohzono
authors.forename: Haruhisa
authors.initials: H
authors.lastname: Akiyama
authors.forename: Kimio
authors.initials: K
authors.lastname: Sumaru
authors.forename: Yo
authors.initials: Y
authors.lastname: Shimizu