Figure 6.

The spatial distribution of field component $E_y$ for SPP generated on a pair of graphene sheets. The FDTD method is our own implementation in MATLAB. The parameters correspond to those in [22]. Taking into account new values of conductivities [22]: ${\sigma }_1=8.91\times {10}^4\mathrm{S}/\mathrm{m}$ and ${\sigma }_{\mathrm{intra}}=9.7\times {10}^{-5}+1.6\times {10}^{-3}i\mathrm{S}$ (slight differences from Hossain and Rana [22] are associated with calculation accuracy). The calculated value ${\lambda }_{SPP+}=10.41\mathsf{\mu }\mathrm{m}$.