Gravity-induced shape transformations of vesicles

M. Kraus, U. Seifert, R. Lipowsky

43 Zitate (Scopus)

Abstract

We theoretically study the behaviour of vesicles filled with a liquid of higher density than the surrounding medium, a technique frequently used in experiments. In the presence of gravity, these vesicles sink to the bottom of the container, and eventually adhere even on non-attractive substrates. The strong size dependence of the gravitational energy makes large parts of the phase diagram accessible to experiments even for small density differences. For relatively large volume, non-axisymmetric bound shapes are explicitly calculated and shown to be stable. Osmotic deflation of such a vesicle leads back to axisymmetric shapes and, finally, to a collapsed state of the vesicle.

OriginalspracheEnglisch
ZeitschriftEPL
Jahrgang32
Ausgabenummer5
Seiten (von - bis)431-436
Seitenumfang6
ISSN0295-5075
DOIs
PublikationsstatusVeröffentlicht - 10.11.1995

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