Figure 7. Effect of GO flake size (a,b) and heat treatment temperature (c,d) on the compressive modulus and the yield stress of the porous networks.

In (a,b), data points from the small flake samples are shadowed. In (c) and (d), the densities of the tested samples are all ∼5 mg/cm³. In order to keep similar GO concentration in the starting solution, the unreduced GO-PN samples were produced without the addition of the binder.