Bychanok, Dmitry S.Dmitry S.BychanokLi, S.S.LiSanchez-Sanchez, A.A.Sanchez-SanchezGorokhov, G.G.GorokhovKuzhir, Polina P.Polina P.KuzhirOgrin, Feodor YuFeodor YuOgrinPasc, AndreaAndreaPascBallweg, ThomasThomasBallwegMandel, Karl-SebastianKarl-SebastianMandelSzczurek, AndrzejAndrzejSzczurekFierro, V.V.FierroCelzard, AlainAlainCelzard2022-03-052022-03-052016https://publica.fraunhofer.de/handle/publica/24231610.1063/1.4938537The electromagnetic response of a heterostructure based on a monolayer of hollow glassy carbon spheres packed in 2D was experimentally surveyed with respect to its response to microwaves, namely, the Ka-band (26-37 GHz) frequency range. Such an ordered monolayer of spheres mimics the well-known ""moth-eye""-like coating structures, which are widely used for designing anti-reflective surfaces, and was modelled with the long-wave approximation. Based on the experimental and modelling results, we demonstrate that carbon hollow spheres may be used for building an extremely lightweight, almost perfectly absorbing, coating for Ka-band applications.enAntireflexschicht621journal article