Electroosmosis near surfactant laden liquid-air interfaces

Baptiste Blanc; Oriane Bonhomme; Pierre Francois Brevet; Emmanuel Benichou; Christophe Ybert; Anne Laure Biance

doi:10.1039/c7sm02508d

Electroosmosis near surfactant laden liquid-air interfaces

Baptiste Blanc
, Oriane Bonhomme
, Pierre Francois Brevet
, Emmanuel Benichou
, Christophe Ybert
, Anne Laure Biance

IGFL, Université de Lyon, Université Lyon 1

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

Abstract

Generation of an electroosmostic (EO) flow near a liquid-gas interface covered with ionic surfactants is experimentally investigated. A combination of microscopic flow measurements with a molecular characterization of the interface by second harmonic generation (SHG) shows that under an electrical forcing, although a liquid flow is generated below the free surface, the surfactants remain immobile. The zeta potential was then determined and compared to the surfactant surface coverage. This combination of experimental techniques opens the route to simultaneously probe the liquid flow near a soapy interface and the corresponding surfactant repartition affecting the hydrodynamic boundary condition.

Original language	English
Pages (from-to)	2604-2609
Number of pages	6
Journal	Soft Matter
Volume	14
Issue number	14
DOIs	https://doi.org/10.1039/c7sm02508d
Publication status	Published - 1 Jan 2018
Externally published	Yes

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title = "Electroosmosis near surfactant laden liquid-air interfaces",

abstract = "Generation of an electroosmostic (EO) flow near a liquid-gas interface covered with ionic surfactants is experimentally investigated. A combination of microscopic flow measurements with a molecular characterization of the interface by second harmonic generation (SHG) shows that under an electrical forcing, although a liquid flow is generated below the free surface, the surfactants remain immobile. The zeta potential was then determined and compared to the surfactant surface coverage. This combination of experimental techniques opens the route to simultaneously probe the liquid flow near a soapy interface and the corresponding surfactant repartition affecting the hydrodynamic boundary condition.",

author = "Baptiste Blanc and Oriane Bonhomme and Brevet, \{Pierre Francois\} and Emmanuel Benichou and Christophe Ybert and Biance, \{Anne Laure\}",

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AU - Blanc, Baptiste

AU - Bonhomme, Oriane

AU - Brevet, Pierre Francois

AU - Benichou, Emmanuel

AU - Ybert, Christophe

AU - Biance, Anne Laure

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Generation of an electroosmostic (EO) flow near a liquid-gas interface covered with ionic surfactants is experimentally investigated. A combination of microscopic flow measurements with a molecular characterization of the interface by second harmonic generation (SHG) shows that under an electrical forcing, although a liquid flow is generated below the free surface, the surfactants remain immobile. The zeta potential was then determined and compared to the surfactant surface coverage. This combination of experimental techniques opens the route to simultaneously probe the liquid flow near a soapy interface and the corresponding surfactant repartition affecting the hydrodynamic boundary condition.

AB - Generation of an electroosmostic (EO) flow near a liquid-gas interface covered with ionic surfactants is experimentally investigated. A combination of microscopic flow measurements with a molecular characterization of the interface by second harmonic generation (SHG) shows that under an electrical forcing, although a liquid flow is generated below the free surface, the surfactants remain immobile. The zeta potential was then determined and compared to the surfactant surface coverage. This combination of experimental techniques opens the route to simultaneously probe the liquid flow near a soapy interface and the corresponding surfactant repartition affecting the hydrodynamic boundary condition.

U2 - 10.1039/c7sm02508d

DO - 10.1039/c7sm02508d

M3 - Article

C2 - 29492490

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SN - 1744-683X

VL - 14

SP - 2604

EP - 2609

JO - Soft Matter

JF - Soft Matter

IS - 14

ER -

Electroosmosis near surfactant laden liquid-air interfaces

Abstract

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