Absolute vs Convective Instabilities and Front Propagation in Lipid Membrane Tubes.

  title={Absolute vs Convective Instabilities and Front Propagation in Lipid Membrane Tubes.},
  author={Jo{\"e}l Tchoufag and Amaresh Sahu and Kranthi K. Mandadapu},
  journal={Physical review letters},
  volume={128 6},
We analyze the stability of biological membrane tubes, with and without a base flow of lipids. Membrane dynamics are completely specified by two dimensionless numbers: the well-known Föppl-von Kármán number Γ and the recently introduced Scriven-Love number SL, respectively quantifying the base tension and base flow speed. For unstable tubes, the growth rate of a local perturbation depends only on Γ, whereas SL governs the absolute versus convective nature of the instability. Furthermore… 
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