A moving contact line as a rheometer for nanometric interfacial layers

Romain Lhermerout, Hugo Perrin, Etienne Rolley, Bruno Andreotti () and Kristina Davitt ()
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Romain Lhermerout: Laboratoire de Physique Statistique de l’Ecole Normale Supérieure, UPMC Univ. Paris 6, Univ. Paris-Diderot
Hugo Perrin: Physique et Mécanique des Milieux Hétérogènes, UMR 7636 ESPCI-CNRS, Univ. Paris-Diderot
Etienne Rolley: Laboratoire de Physique Statistique de l’Ecole Normale Supérieure, UPMC Univ. Paris 6, Univ. Paris-Diderot
Bruno Andreotti: Physique et Mécanique des Milieux Hétérogènes, UMR 7636 ESPCI-CNRS, Univ. Paris-Diderot
Kristina Davitt: Laboratoire de Physique Statistique de l’Ecole Normale Supérieure, UPMC Univ. Paris 6, Univ. Paris-Diderot

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract How a liquid drop sits or moves depends on the physical and mechanical properties of the underlying substrate. This can be seen in the hysteresis of the contact angle made by a drop on a solid, which is known to originate from surface heterogeneities, and in the slowing of droplet motion on deformable solids. Here, we show how a moving contact line can be used to characterize a molecularly thin polymer layer on a solid. We find that the hysteresis depends on the polymerization index and can be optimized to be vanishingly small (

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12545

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DOI: 10.1038/ncomms12545

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