Interaction Of Electromagnetic Waves With Multilayer Graphene-slab Structure

Since graphene was discovered in2004, it has been aroused researchers’ widelyattentions for its unique properties. Especially, its conductivity and mechanical propertiescan equal with carbon nanotubes and even better, which makes graphene a potentialhigh-tech application materials. Now, thanks to the improvements of technology, we canmanufacture graphene sheet of a diameter up to30cm, which opens up the possibility ofapplying graphene in the field of microwave and millimeter wave. The unique atomicstructure of graphene leads to its non-gap linear electronic structure, thus forming aspecial character of graphene. Graphene is a single layer of carbon atoms arranged in ahoneycomb structure, and due to its excellent mechanical properties and a largesustainable current, we believe that graphene will have a broad application prospects inthe field of microwave and nano-technology in the near future. With the widespreadapplication of graphene, the interaction between electromagnetic wave and graphene hasbecome an important research. During the propagation of electromagnetic wave, what isthe most important is the reflection and transmission character of electromagnetic waves.So the investigation of character of reflection and transmission of different structures suchas single-layer graphene, graphene with different substrates or multi-layer graphene isextremely necessary.The main works can be summarized as:1. At the THz frequency, when the electromagnetic waves incident on thegraphene-dielectric plates, the reflection-transmission versus frequency curves show thatthe multi-layer structure has a band-stop and band-pass character comparing with usingthe transfer matrix method.2. Using the Generalized Spectral Domain-Exponential Matrix Technique toinvestigate the graphene of bianisotropic substrates, we have analyzed the reflection andtransmission of electromagnetic waves, co-and cross-polarized reflection andtransmission coefficients of graphene-bianisotropic medium multilayer structures whichdepend on the frequency, chemical potential and the incident angle. 3. It has been demonstrated that there are more freedoms to be exploited for adjustingboth reflection and transmission of a THz wave using layered graphene and bianisotropiccomposites, which have great potentials for the development of some tunable planarwaveguides and devices operating at THz bands. On the other hand, we would like toemphasize the above generalized spectral-domain exponential matrix technique can alsobe implemented for solving radiation and scattering problems of graphene sheets and otherbianisotropic composites.