Protein and ionic surfactants - promoters and inhibitors of contact line pinning

Details Protein and ionic surfactants - promoters and inhibitors of contact line pinning Protein and ionic surfactants - promoters and inhibitors of contact line pinning

2007-04-03

arxiv.org/abs/0704.0434v1

Physics

Chemical Physics

3 pages, 4 figures

Scientific paper

We report a new effect of surfactants in pinning a drop contact line,
specifically that lysozyme promotes while lauryl sulfate inhibits pinning. We
explain the pinning disparity assuming difference in wetting: the protein-laden
drop wets a "clean" surface and the surfactant-laden drop wets an
auto-precursored surface.

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