Figure 4. DDM analysis reveals heterogenous, non-ergodic transport amplified in crosslinked networks.

(A) Intermediate scattering functions (ISF) are fit to a stretched exponential with a nonergodicity component, as described in Methods. The fits to the ISFs for each condition are plotted in bright green. The height of the long-time plateau reflects the nonergodicity of the transport. (B) DDM analysis shows increased dynamic heterogeneity in crosslinked networks through decreasing stretching exponents ($\gamma$). The stretching exponent ($\gamma$) from the intermediate scattering functions for each condition is plotted. A stretching exponent less than 1 indicates the presence of heterogeneous crowded media. Error bars are the standard error calculated from the different videos taken for each sample.