Study of non-linear viscoelastic behavior of the human red blood cell
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arXiv.org
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The non-linear behavior of human erythrocytes subjected to shear stress was
analyzed using data series from the Erythrocyte Rheometer and a theoretical model
was developed. Linear behavior was eliminated by means of a slot filter and a sixth
order Savisky-Golay filter was applied to the resulting time series that allows the
elimination of any possible white noise in the data. A fast Fourier transform was
performed on the processed data, which resulted in a series of frequency dominant
peaks. Results suggest the presence of a non-linear quadratic term in the Kelvin-
Voigt phenomenological model. The correlation dimension studied through
recurrence quantification analysis gave C2=(2.58±0.08). Results suggest that the
underlying dynamics is the same in each RBC sample corresponding to healthy
donors.
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