Morphological transitions of droplets wetting rectangular domains

Davide Ferraro, Ciro Semprebon, Tamara Tóth, Emanuele Locatelli, Matteo Pierno, Giampaolo Mistura, Martin Brinkmann

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


We report the results of comprehensive experiments and numerical calculations of interfacial morphologies of water confined to the hydrophilic top face of rectangular posts of width W = 500 μm and lengths between L = 5W and 30W. A continuous evolution of the interfacial shape from a homogeneous liquid filament to a bulged filament and back is observed during changes in the liquid volume. Above a certain threshold length of L* = 16.0W, the transition between the two morphologies is discontinuous and a bistability of interfacial shapes is observed in a certain interval of the reduced liquid volume V/W3.
Original languageEnglish
Pages (from-to)13919-13923
Number of pages5
Issue number39
Publication statusPublished - 2 Oct 2012


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