title: Enhanced mixing of droplets during coalescence on a surface with a wettability gradient.
authors.affiliation: Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan.
authors.forename: Yu-Hsuan
authors.initials: YH
authors.lastname: Lai
authors.forename: Miao-Hsing
authors.initials: MH
authors.lastname: Hsu
authors.forename: Jing-Tang
authors.initials: JT
authors.lastname: Yang