The Zipping-wetting Dynamics at the Breakdown of Superhydrophobicity

Mauro Sbragaglia; Christophe Pirat; Alisia M. Peters; Peichun Amy Tsai; Bram M. Borkent; Rob G.H. Lammertink; Matthias Wessling; Detlef Lohse

The Zipping-wetting Dynamics at the Breakdown of Superhydrophobicity

Mauro Sbragaglia, Christophe Pirat, Alisia M. Peters, Peichun Amy Tsai, Bram M. Borkent, Rob G.H. Lammertink, Matthias Wessling, Detlef Lohse

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Abstract

Under some conditions water droplets can completely wet micro-structured superhydrophobic surfaces. The dynamics of this rapid process is investigated with ultra-high-speed imaging. Depending on the scales of the micro-structure, the wetting fronts propagate smoothly and circularly or – more interestingly – in a stepwise manner for a smaller periodicity of the microstructure. The latter phenomenon leads to a growing square-shaped wetted area: liquid laterally enters a new row on a slow timescale of milliseconds, once it happens the row then fills itself towards the sides in microseconds (“zipping”).

Original language	English
Number of pages	2
Publication status	Published - 24 Aug 2008
Event	XXII International Congress of Theoretical and Applied Mechanics, ICTAM 2008 - Adelaide, Australia Duration: 24 Aug 2008 → 29 Aug 2008 Conference number: 22

Conference

Conference	XXII International Congress of Theoretical and Applied Mechanics, ICTAM 2008
Abbreviated title	ICTAM
Country/Territory	Australia
City	Adelaide
Period	24/08/08 → 29/08/08

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title = "The Zipping-wetting Dynamics at the Breakdown of Superhydrophobicity",

abstract = "Under some conditions water droplets can completely wet micro-structured superhydrophobic surfaces. The dynamics of this rapid process is investigated with ultra-high-speed imaging. Depending on the scales of the micro-structure, the wetting fronts propagate smoothly and circularly or – more interestingly – in a stepwise manner for a smaller periodicity of the microstructure. The latter phenomenon leads to a growing square-shaped wetted area: liquid laterally enters a new row on a slow timescale of milliseconds, once it happens the row then fills itself towards the sides in microseconds (“zipping”).",

author = "Mauro Sbragaglia and Christophe Pirat and Peters, {Alisia M.} and Tsai, {Peichun Amy} and Borkent, {Bram M.} and Lammertink, {Rob G.H.} and Matthias Wessling and Detlef Lohse",

year = "2008",

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language = "English",

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TY - CONF

T1 - The Zipping-wetting Dynamics at the Breakdown of Superhydrophobicity

AU - Sbragaglia, Mauro

AU - Pirat, Christophe

AU - Peters, Alisia M.

AU - Tsai, Peichun Amy

AU - Borkent, Bram M.

AU - Lammertink, Rob G.H.

AU - Wessling, Matthias

AU - Lohse, Detlef

N1 - Conference code: 22

PY - 2008/8/24

Y1 - 2008/8/24

N2 - Under some conditions water droplets can completely wet micro-structured superhydrophobic surfaces. The dynamics of this rapid process is investigated with ultra-high-speed imaging. Depending on the scales of the micro-structure, the wetting fronts propagate smoothly and circularly or – more interestingly – in a stepwise manner for a smaller periodicity of the microstructure. The latter phenomenon leads to a growing square-shaped wetted area: liquid laterally enters a new row on a slow timescale of milliseconds, once it happens the row then fills itself towards the sides in microseconds (“zipping”).

AB - Under some conditions water droplets can completely wet micro-structured superhydrophobic surfaces. The dynamics of this rapid process is investigated with ultra-high-speed imaging. Depending on the scales of the micro-structure, the wetting fronts propagate smoothly and circularly or – more interestingly – in a stepwise manner for a smaller periodicity of the microstructure. The latter phenomenon leads to a growing square-shaped wetted area: liquid laterally enters a new row on a slow timescale of milliseconds, once it happens the row then fills itself towards the sides in microseconds (“zipping”).

M3 - Abstract

T2 - XXII International Congress of Theoretical and Applied Mechanics, ICTAM 2008

Y2 - 24 August 2008 through 29 August 2008

ER -

The Zipping-wetting Dynamics at the Breakdown of Superhydrophobicity

Abstract

Conference

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