Fig. 2: Morphology of the MH-IL hydrogel.

a, b Cross-sectional SEM images of MH(30) and MH(30)-IL hydrogel-derived films, respectively. c, d Top-view SEM images of MH(30) and MH(30)-IL hydrogel-derived films, respectively. e, f TEM and HRTEM images of MH (30), respectively. g, h TEM and HRTEM images of MH (30)-IL, respectively