Fig. 7From: One-Step Synthesis of Nitrogen-Doped Hydrophilic Mesoporous Carbons from Chitosan-Based Triconstituent System for Drug ReleaseOptical micrographs of the water contact angles on the surface of mesoporous carbon as a function of contact time (a–e) NMCs-5/3, (f–j) NMCs-6/3, (k–o) NMCs-7/3, and (p–t) NMCs-8/3Back to article page