Fig. 6From: Multifunctional graphene metasurface to generate and steer vortex wavesIllustration of combination of phase discontinuity functions. a ϕ1, phase discontinuity distribution of MS1, which generates vortex electromagnetic wave with l=1. b ϕ2, phase discontinuity distribution of MS2, which results in anomalous reflection. c Combined phase discontinuity distribution of the MSt calculated by Eq. 6Back to article page