Fig. 3
Effective diffusivity calculated for each analyte and corresponding theoretical prediction based on Eq. (2). Effective diffusivity for positive (a, b), negative (c, d), and neutral (e, f) molecules. The experimental data (black solid circles) are compared in a–d with Eq. (2) including only hard-sphere (HS) and hydrodynamics effects (blue solid lines), only exclusion or enrichment effects (green solid lines), and the full Eq. (2) (red solid line). The green line is computed from Eq. (2) with rs = 0 and K = 1, corresponding to neglecting HS and hydrodynamic interactions. e, f show diffusivity data for two neutral species. As in the previous panels, blue solid lines are computed from Eq. (2) with q = 0. Each of the data points denotes the average of three individual replicates, error bars are ±sd
