Morphological transitions of droplets wetting rectangular domains

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

doi:10.1021/la302854t

Morphological transitions of droplets wetting rectangular domains

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

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	13919-13923
Number of pages	5
Journal	Langmuir
Volume	28
Issue number	39
DOIs	https://doi.org/10.1021/la302854t
Publication status	Published - 2 Oct 2012

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AU - Ferraro, Davide

AU - Semprebon, Ciro

AU - Tóth, Tamara

AU - Locatelli, Emanuele

AU - Pierno, Matteo

AU - Mistura, Giampaolo

AU - Brinkmann, Martin

PY - 2012/10/2

Y1 - 2012/10/2

N2 - 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.

AB - 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.

U2 - 10.1021/la302854t

DO - 10.1021/la302854t

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JO - Langmuir

JF - Langmuir

IS - 39

ER -

Morphological transitions of droplets wetting rectangular domains

Abstract

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