The interaction of Kα microwave radiation with ultrathin graphene films is studied. Although the thickness of these films is thousands of times smaller than the skin depth, they can absorb a significant fraction of the incident radiation. The possibility of controlling the amount of absorption and reflection of waves incident on graphene is demonstrated. In particular, by choosing the substrate parameters and the angle of incidence, it is possible to increase the absorption in graphene to >50%. For certain angles of incidence it is possible to have the TE-wave reflected, while the TM-wave is transmitted. These effects can be used to create ultrathin (atomic thicknesses) absorbers and polarizers.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 83, No. 4, pp. 640–646, July–August, 2016.
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Batrakov, K.G., Paddubskaya, A.G., Valynets, N.I. et al. Microwave Absorption in Graphene Films: Theory and Experiment. J Appl Spectrosc 83, 650–655 (2016). https://doi.org/10.1007/s10812-016-0342-x
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DOI: https://doi.org/10.1007/s10812-016-0342-x