Rheology of semi-dilute solutions of calf-thymus DNA |
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| Authors: | Ranjini Bandyopadhyay AK Sood |
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| Affiliation: | (1) Department of Physics, Indian Institute of Science, 560 012 Bangalore, India;(2) Present address: Department of Physics and Astronomy, University of California, Los Angeles, 90095-1547 Los Angeles, CA, USA |
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| Abstract: | We study the rheology of semi-dilute solutions of the sodium salt of calf-thymus DNA in the linear and nonlinear regimes. The frequency response data can be fitted very well to the hybrid model with two dominant relaxation times τ0 and τ1. The ratio (τ0/τ1) ∼5 is seen to be fairly constant on changing the temperature from 20 to 30°C. The shear rate dependence of viscosity can be fitted to the Carreau model. |
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| Keywords: | DNA rheology hybrid model |
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