Figure 4
From: Surface stress of graphene layers supported on soft substrate
(a) Deformation profile of the same substrate as Fig. 3 but incorporating different values of surface stress γs. The insert is close-up of the cusp region. The fitted cusp angle increases with increasing γs. (b) Best fittings of theoretical models with and without surface stress of the solid are superimposed on the experimental data obtained from a glycerol droplet laying on a 16 μm thick silicone substrate covered by one layer of graphene.
