Terahertz frequency selective surfaces using heterostructures based on two-dimensional diffraction grating of single-walled carbon nanotubes

For single-walled carbon nanotubes (SWCNTs) with a length of 1–50 µm, the surface plasmon-polariton (SPP) resonance is within terahertz frequency range; therefore, SWCNT lattices can be used to design frequency-selective (FSS). A numerical model electromagnetic wave diffraction on two-dimensional periodic lattice described by an integro-differential equation second-order respect current along SWCNT. The solved Bubnov–Galerkin method. Frequency dependence reflecting and transmitting waves for FSSs near SPP studied numerically. It shown that resonances are lower-frequency part range. We also estimate relaxation individual demonstrate applicability Kubo formula graphene conductivity array strips similar in size SWCNTs under consideration.