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. 2021 Feb 18;12:1116. doi: 10.1038/s41467-021-21322-0

Fig. 5. Rheological characterizations of synthetic mucus and polyacrylamide.

Fig. 5

a Scanning electron microscopy (SEM) image of synthetic mucus; similar images were produced in two other mucin samples. b Viscosity vs. shear rate curves for different concentrations of mucin and 0.25% polyacrylamide. c Comparison of centrifuged and uncentrifuged 4% mucin formulations. d Evolution of storage modulus (Pa) and loss modulus (Pa) with increasing oscillation strain for 4% mucin; frequency was fixed at 10 Hz during this experiment. e First (ψ1) and second (ψ2) normal stress coefficients for 10% mucin with theoretical inertial correction (see Supplementary Note 10). Three independent trials were performed for individual concentrations in (b), three independent trials were used for data shown in (c, e), and four independent trials were performed for (d). Data are presented as mean ± standard deviation. Source data are provided as a source data file.