Fluctuations of red blood cell membranes: The role of the cytoskeleton

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We theoretically investigate the membrane fluctuations of red blood cells with focus laid on the role of the cytoskeleton, viewing the system as a membrane coupled to a sparse spring network. This model is exactly solvable and enables us to examine the coupling strength dependence of the membrane undulation. We find that the coupling modifies the fluctuation spectrum at wavelengths longer than the mesh size of the network, while leaving the fluid-like behavior of the membrane intact at shorter wavelengths. The fluctuation spectra can be markedly different, depending on not only the relative amplitude of the bilayer bending energy with respect to the cytoskeleton deformation energy but also the bilayer-cytoskelton coupling strength.
Publisher
AMER PHYSICAL SOC
Issue Date
2015-07
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW E, v.92, no.1, pp.012717-1 - 012717-7

ISSN
1539-3755
DOI
10.1103/PhysRevE.92.012717
URI
http://hdl.handle.net/10203/200671
Appears in Collection
NT-Journal Papers(저널논문)
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