Fig. 4From: Graphene oxide liquid crystals: synthesis, phase transition, rheological property, and applications in optoelectronics and display a Phase diagram of GO based on mass fraction (f m ) and NaCl concentration. “I,” “I + N,” “N,” and “S” represent isotropic phase, isotropic-nematic state, nematic phase, and solid state of GO dispersions. b Zeta potential of GO dispersion (f m = 0.005) versus NaCl concentration [19]. c Volume fraction of nematic phase as a function of GO concentration with pH value of 2, 6, and 9 [51]Back to article page