Drop-wise and film-wise water condensation processes occurring on metallic micro-scaled surfaces

Anton Starostin; Viktor Valtsifer; Zahava Barkay; Irina Legchenkova; Viktor Danchuk; Edward Bormashenko

doi:10.1016/j.apsusc.2018.03.065

Drop-wise and film-wise water condensation processes occurring on metallic micro-scaled surfaces

Anton Starostin, Viktor Valtsifer, Zahava Barkay, Irina Legchenkova, Viktor Danchuk, Edward Bormashenko

Department of Chemical Engineering

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

24 Scopus citations

Abstract

Water condensation was studied on silanized (superhydrophobic) and fluorinated (superoleophobic) micro-rough aluminum surfaces of the same topography. Condensation on superhydrophobic surfaces occurred via film-wise mechanism, whereas on superoleophobic surfaces it was drop-wise. The difference in the pathways of condensation was attributed to the various energy barriers separating the Cassie and Wenzel wetting states on the investigated surfaces. The higher barriers inherent for superoleophobic surfaces promoted the drop-wise condensation. Triple-stage kinetics of growth of droplets condensed on superoleophobic surfaces is reported and discussed.

Original language	English
Pages (from-to)	604-609
Number of pages	6
Journal	Applied Surface Science
Volume	444
DOIs	https://doi.org/10.1016/j.apsusc.2018.03.065
State	Published - 30 Jun 2018

Keywords

Drop-wise condensation
Film-wise condensation
Kinetics of droplets growth
Stability of the Cassie state
Superhydrophobic surfaces
Superoleophobic surfaces

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10.1016/j.apsusc.2018.03.065

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title = "Drop-wise and film-wise water condensation processes occurring on metallic micro-scaled surfaces",

abstract = "Water condensation was studied on silanized (superhydrophobic) and fluorinated (superoleophobic) micro-rough aluminum surfaces of the same topography. Condensation on superhydrophobic surfaces occurred via film-wise mechanism, whereas on superoleophobic surfaces it was drop-wise. The difference in the pathways of condensation was attributed to the various energy barriers separating the Cassie and Wenzel wetting states on the investigated surfaces. The higher barriers inherent for superoleophobic surfaces promoted the drop-wise condensation. Triple-stage kinetics of growth of droplets condensed on superoleophobic surfaces is reported and discussed.",

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T1 - Drop-wise and film-wise water condensation processes occurring on metallic micro-scaled surfaces

AU - Starostin, Anton

AU - Valtsifer, Viktor

AU - Barkay, Zahava

AU - Legchenkova, Irina

AU - Danchuk, Viktor

AU - Bormashenko, Edward

PY - 2018/6/30

Y1 - 2018/6/30

N2 - Water condensation was studied on silanized (superhydrophobic) and fluorinated (superoleophobic) micro-rough aluminum surfaces of the same topography. Condensation on superhydrophobic surfaces occurred via film-wise mechanism, whereas on superoleophobic surfaces it was drop-wise. The difference in the pathways of condensation was attributed to the various energy barriers separating the Cassie and Wenzel wetting states on the investigated surfaces. The higher barriers inherent for superoleophobic surfaces promoted the drop-wise condensation. Triple-stage kinetics of growth of droplets condensed on superoleophobic surfaces is reported and discussed.

AB - Water condensation was studied on silanized (superhydrophobic) and fluorinated (superoleophobic) micro-rough aluminum surfaces of the same topography. Condensation on superhydrophobic surfaces occurred via film-wise mechanism, whereas on superoleophobic surfaces it was drop-wise. The difference in the pathways of condensation was attributed to the various energy barriers separating the Cassie and Wenzel wetting states on the investigated surfaces. The higher barriers inherent for superoleophobic surfaces promoted the drop-wise condensation. Triple-stage kinetics of growth of droplets condensed on superoleophobic surfaces is reported and discussed.

KW - Drop-wise condensation

KW - Film-wise condensation

KW - Kinetics of droplets growth

KW - Stability of the Cassie state

KW - Superhydrophobic surfaces

KW - Superoleophobic surfaces

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VL - 444

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JO - Applied Surface Science

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Drop-wise and film-wise water condensation processes occurring on metallic micro-scaled surfaces

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