Erratum: Modeling Gel Swelling Equilibrium in the Mean Field: From Explicit to Poisson-Boltzmann Models [Phys. Rev. Lett. 122, 208002 (2019)]

Figure 2

Comparison between the three models. The equilibrium swelling length $R_{\mathrm{eq}}$ as a function of (a) the charge fraction $f$ along the gel polymer backbone for $c_{\mathrm{salt}}^b=0.01\mathrm{mol}{\mathrm{L}}^{-1}$ and $N\approx 80$; (b) the salt bath concentration $c_{\mathrm{salt}}^b$ for $f=0.5$ and $N=64$. As can be seen in Fig. 3 the quality of the predictions of the single-chain model and the PB model for other parameter combinations are also very good.

Figure 3

The swelling equilibria of the single-chain cell model and the PB model compared to the periodic gel simulations. The results are compared for a wide exploration of in total 60 parameter combinations with $N\approx 40$, 64, 80, $f\in \{0.125,0.25,0.5,1\}$ and $c_{\mathrm{salt}}^b\in \{0.01,0.02,0.05,0.1,0.2\}\mathrm{mol}{\mathrm{L}}^{-1}$. The linear function has the form $y(x)=x$.