Figure 4

The structure and simulation results of type 3 graphene plasmonic metasurface. (a) The top view of the metasurface, which shows that the metasurface is made up of \(21\times 21\) elements, and elements in each column are the same. \(l\) and \(w\) of each element are equal and gradually increased along the \(+x\) direction in each row. (b) The reflected phases distributions, which demonstrate that \({\phi }_{{E}_{y}}(x)\) and \({\phi }_{{E}_{x}}(x)\) are equally decreased along the \(+x\) direction. (c) The electric-field distributions of TM reflected waves deflected to the direction of (\({\varphi }_{{E}_{x}}\,=\,{0}^{{\rm{o}}}\), \({\theta }_{{E}_{x}}\,=\,{23.6}^{{\rm{o}}}\)). (d) The electric-field distributions of TE reflected waves deflected to the same direction of (\({\varphi }_{{E}_{y}}\,=\,{0}^{{\rm{o}}}\), \({\theta }_{{E}_{y}}\,=\,{23.6}^{{\rm{o}}}\)). (e) Normalized far-field patterns of TM and TE reflected waves, in the XOZ plane.