Attachment of Oil Droplets and Cells on Dropping Mercury Electrode

Attachment of Oil Droplets and Cells on Dropping Mercury Electrode

The process of attachment of organic droplets and cells at a liquid−liquid interface is studied in the system of a dropping mercury electrode in an aqueous cell suspension. Attachment frequency of droplets and cells is experimentally monitored, and a model for the dynamics of arrival and attachment...

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Veröffentlicht in:Langmuir 1999-08, Vol.15 (17), p.5649-5653
Hauptverfasser: Tsekov, Roumen, Kovač, Solveg, Žutić, Vera
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Sprache:eng
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Chemistry
Electrochemistry
Exact sciences and technology
Gas-liquid interface and liquid-liquid interface
General and physical chemistry
Study of interfaces
Surface physical chemistry
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creator Tsekov, Roumen
Kovač, Solveg
Žutić, Vera
description The process of attachment of organic droplets and cells at a liquid−liquid interface is studied in the system of a dropping mercury electrode in an aqueous cell suspension. Attachment frequency of droplets and cells is experimentally monitored, and a model for the dynamics of arrival and attachment of particles at the expanding mercury interface is proposed. The model accounts for the van der Waals and hydrophobic forces between the mercury and oil droplets and cells while the electrostatic force is negligible due to the high salt concentration. The important role of the Marangoni convection is emphasized as an active flow pushing the particles to attach on the mercury surface.
doi_str_mv 10.1021/la980944q
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subjects Chemistry
Electrochemistry
Exact sciences and technology
Gas-liquid interface and liquid-liquid interface
General and physical chemistry
Study of interfaces
Surface physical chemistry
title Attachment of Oil Droplets and Cells on Dropping Mercury Electrode
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