The 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.
Hollow carbon spheres in microwaves: Bio inspired absorbing coating
D. Bychanok, S. Li, A. Sanchez-Sanchez, G. Gorokhov, P. Kuzhir, F. Y. Ogrin, A. Pasc, T. Ballweg, K. Mandel, A. Szczurek, V. Fierro, A. Celzard; Hollow carbon spheres in microwaves: Bio inspired absorbing coating. Appl. Phys. Lett. 4 January 2016; 108 (1): 013701. https://doi.org/10.1063/1.4938537
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