• DOI:10.1103/PHYSREVLETT.92.108103
• Corpus ID: 30723033

Rheology of giant vesicles: a micropipette study.

@article{Fa2004RheologyOG,
  title={Rheology of giant vesicles: a micropipette study.},
  author={Nathalie Fa and Carlos Manuel Marques and Eduardo Mendes and A P Schr{\"o}der},
  journal={Physical review letters},
  year={2004},
  volume={92 10},
  pages={
          108103
        }
}

• N. Fa, C. Marques, +1 author A. Schröder
• Published 10 March 2004
• Biology, Physics
• Physical review letters

We develop a micropipette rheometer to study the effect of oscillatory shear flow on the spontaneous fluctuations of phospholipid bilayers. Our results on giant vesicles show that oscillatory shear flow leads to a suppression of membrane fluctuations. They also imply that the Helfrich equation is modified in the presence of the flow. This equation, a fundamental constitutive relation between the amount of area stored in the fluctuations and the membrane tension, must be supplemented under oscillatory shear by a flow excess function that we determine.