Cytoskeleton influence on normal and tangent fluctuation modes in the red blood cells

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dc.creatorRochal, S. B.
dc.creatorLorman, V. L.
dc.date2006-02-08
dc.date2006-06-30
dc.date.accessioned2026-07-07T07:04:03Z
dc.date.available2026-07-07T07:04:03Z
dc.descriptionWe argue that the paradoxal softness of the red blood cells (RBC) in fluctuation spectra experiments is apparent. We show that the effective surface shear modulus $μ_s$ of the RBC obtained from fluctuation data and that measured in static deformation experiments have the same order of magnitude. A simple micromechanical model of the RBC developped for this purpose accounts for the influence of a finite-thickness cytoskeleton on the fluctuations of the composite membrane-cytoskeleton system. The spectrin network cytoskeleton with the bulk shear modulus estimated as $μ\approx105÷165$ Pa contributes to both normal and tangent fluctuations of the system and confines the fluctuations of the lipid membrane. The ratio of mean square amplitudes of the RBC normal and tangent fluctuations $<X_n^2> /< X_t^2>$ calculated in the frame of the model is 2-3 orders of magnitude smaller that it is in the free membrane with the same bending and shear moduli
dc.description14 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/physics/0602046
dc.identifierhttp://arxiv.org/abs/physics/0602046
dc.identifierdoi:10.1103/PhysRevLett.96.248102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109214
dc.subjectBiological Physics
dc.titleCytoskeleton influence on normal and tangent fluctuation modes in the red blood cells
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