Ref HAL: in2p3-00118727_v1
PMID 16907283
Ref Arxiv: physics/0602046
DOI: 10.1103/PhysRevLett.96.248102
WoS: 000238487900064
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
17 Citations
Résumé:

We argue that the paradoxal softness of the red blood cells (RBC) in fluctuation experiments is apparent. We show that the effective surface shear modulus µs of the RBC obtained from fluctuation data and that measured in static deformation experiments have the same order of magnitude. In the RBC model developed for this purpose the spectrin network cytoskeleton with the bulk shear modulus estimated as µ[approximate]105–165 Pa contributes to both normal and tangent fluctuations of the system and confines the membrane fluctuations. The calculated ratio of the mean-square amplitudes n²>/t²> is 2–3 orders of magnitude smaller than it is in the free membrane with the same bending and shear moduli.