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Issue 3, 2011
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Nanotubes from asymmetrically decorated vesicles

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Hydrodynamic nanotube extrusion is used to characterize chitosan-decorated vesicles, which are more robust to pH and salt shocks and exhibit specific behavior under osmotic pressure if compared to their bare homologues. The vesicle attached to a micro-rod is submitted to a flow. Above a threshold velocity, we observe the extrusion of a lipidic nanotube. We study how it grows and relaxes when the flow is stopped. We find that extrusion forces for decorated vesicles are weaker than for bare vesicles. We interpret these results using a model that introduces the spontaneous curvature due to asymmetric adsorption of chitosan on the external leaflet of the bilayer, which allows us to calculate the stationary length of the tube versus the flow velocity and to estimate the spontaneous curvature c0.

Graphical abstract: Nanotubes from asymmetrically decorated vesicles

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Publication details

The article was received on 06 Apr 2010, accepted on 12 Oct 2010 and first published on 30 Nov 2010

Article type: Paper
DOI: 10.1039/C0SM00212G
Citation: Soft Matter, 2011,7, 946-951
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    Nanotubes from asymmetrically decorated vesicles

    S. Kremer, C. Campillo, F. Quemeneur, M. Rinaudo, B. Pépin-Donat and F. Brochard-Wyart, Soft Matter, 2011, 7, 946
    DOI: 10.1039/C0SM00212G

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