Skip to Main content Skip to Navigation
Journal articles

Stokes Instability in Inhomogeneous Membranes: Application to Lipoprotein Suction of Cholesterol-Enriched Domains

Abstract : We examine the time-dependent distortion of a nearly circular viscous domain in an infinite viscous sheet when suction occurs. Suction, the driving force of the instability, can occur everywhere in the two phases separated by an interface. The model assumes a two-dimensional Stokes flow; the selection of the wavelength at short times is determined by a variational procedure. Contrary to the viscous fingering instability, undulations of the boundary may be observed for enough pumping, whatever the sign of the viscosity contrast between the two fluids involved. We apply our model to the suction by lipoproteins of cholesterol-enriched domains in giant unilamellar vesicles. Comparison of the number of undulations given by the model and by the experiments gives reasonable values of physical quantities such as the viscosities of the domains.
Document type :
Journal articles
Complete list of metadatas

Cited literature [36 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-02443663
Contributor : Nicolas Puff <>
Submitted on : Monday, March 9, 2020 - 8:44:58 PM
Last modification on : Thursday, September 24, 2020 - 4:00:24 PM
Long-term archiving on: : Wednesday, June 10, 2020 - 5:12:16 PM

File

2d2c8aeb51199477b8a0391d0835b9...
Publisher files allowed on an open archive

Identifiers

Citation

M. Ben Amar, J.-M. Allain, N. Puff, M. Angelova. Stokes Instability in Inhomogeneous Membranes: Application to Lipoprotein Suction of Cholesterol-Enriched Domains. Physical Review Letters, American Physical Society, 2007, 99 (4), pp.044503. ⟨10.1103/PhysRevLett.99.044503⟩. ⟨hal-02443663⟩

Share

Metrics

Record views

287

Files downloads

713