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Molecular desorption by a moving contact line

Franiatte, Sylvain and Tordjeman, Philippe and Ondarçuhu, Thierry Molecular desorption by a moving contact line. (2021) Physical Review Letters, 127 (6). 065501. ISSN 0031-9007

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Official URL: https://doi.org/10.1103/PhysRevLett.127.065501


The interaction of the contact line with topographical or chemical defects at the nanometer scale sets the macroscopic wetting properties of a liquid on a solid substrate. Based on specific atomic force microscopy (AFM) experiments, we demonstrate that molecules physically sorbed on a surface are removed by a dynamic contact line. The mechanism of molecules desorption is directly determined by the capillary force exerted at the contact line on the molecules. We also emphasize the potential of AFM to clearly decorrelate the effects of topographical and chemical defects and monitor, with a subsecond time resolution, the dynamics of molecules adsorption on a surface.

Item Type:Article
Additional Information:Thanks to the editor American Physical Society. The article is available at the adresse : https://doi.org/10.1103/PhysRevLett.127.065501. Published source must be acknowledged with citation.
HAL Id:hal-03381912
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:04 Oct 2021 09:05

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