Flexible transparent graphene/polymer multilayers for efficient electromagnetic field absorption

K. Batrakov, P. Kuzhir, S. Maksimenko, A. Paddubskaya, S. Voronovich, Philippe Lambin, T. Kaplas, Yu Svirko

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    Résumé

    Thanks to its high electrical conductivity, a graphene plane presents a good shielding efficiency against GHz electromagnetic radiations. Several graphene planes separated by thin polymer spacers add their conductivities arithmetically, because each of them conserves the intrinsic properties of isolated graphene. Maximum absorption of radiations for frequency around 30 GHz is achieved with six separated graphene planes, which is the optimum number. This remarkable result is demonstrated experimentally from electromagnetic measurements performed in the Ka band on a series of multilayers obtained by piling 1, 2, 3 ⋯ graphene/PMMA units on a silica substrate. Theoretical calculations convincingly explain the observed absorption and transmission data in the GHz domain. It is concluded that graphene/PMMA multilayers can be used as an efficient optically transparent and flexible shielding media.

    langue originaleAnglais
    Numéro d'article7191
    Nombre de pages5
    journalScientific Reports
    Volume4
    Les DOIs
    Etat de la publicationPublié - 26 nov. 2014

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