title: Flexible transparent graphene/polymer multilayers for efficient electromagnetic field absorption.
abstract: 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.
authors.affiliation: Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus.
authors.forename: K
authors.initials: K
authors.lastname: Batrakov
authors.affiliation: Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus.
authors.forename: P
authors.initials: P
authors.lastname: Kuzhir
authors.affiliation: Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus.
authors.forename: S
authors.initials: S
authors.lastname: Maksimenko
authors.affiliation: Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus.
authors.forename: A
authors.initials: A
authors.lastname: Paddubskaya
authors.affiliation: Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus.
authors.forename: S
authors.initials: S
authors.lastname: Voronovich
authors.affiliation: Physics Department, Université de Namur, 61 Rue de Bruxelles, B-5000 Namur, Belgium.
authors.forename: Ph
authors.initials: P
authors.lastname: Lambin
authors.affiliation: Department of Physics and Mathematics, University of Eastern Finland, Joensuu FI-80101, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Kaplas
authors.affiliation: Department of Physics and Mathematics, University of Eastern Finland, Joensuu FI-80101, Finland.
authors.forename: Yu
authors.initials: Y
authors.lastname: Svirko