Esferas ocas de carbono em microondas: revestimento absorvente bioinspirado

sexta-feira, janeiro 15, 2016

Hollow carbon spheres in microwaves: Bio inspired absorbing coating

D. Bychanok 1,a), S. Li 2, A. Sanchez-Sanchez 3, G. Gorokhov 1, P. Kuzhir 1, F. Y. Ogrin 4, A. Pasc 2, T. Ballweg 5, K. Mandel 5,6, A. Szczurek 3, V. Fierro 3 and A. Celzard 3

1 Research Institute for Nuclear Problems BSU, 11 Bobruiskaya Str., 220030 Minsk, Belarus

2 NANO Group, SRSMC-UMR Université de Lorraine-CNRS 7565, Vandoeuvre-lès-Nancy Cedex, France

3 Institut Jean Lamour-UMR Université de Lorraine-CNRS 7198, ENSTIB, 27 rue Philippe Seguin, CS 60036, 88026 Epinal Cedex, France

4 University of Exeter, Exeter EX4 4QL, United Kingdom

5 Fraunhofer Institute for Silicate Research ISC, Neunerplatz 2, 97082 Wuerzburg, Germany

6 Julius-Maximilians-University Wuerzburg, Chair of Chemical Technology of Materials Synthesis, Roentgenring 11, 97070 Wuerzburg, Germany


Appl. Phys. Lett. 108, 013701 (2016);


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.

FREE PDF GRATIS: Applied Physics Letters



Mas Darwin não tinha removido o "teleologia" (design intencional) da ciência? Richard Dawkins não afirmou que o design na natureza é uma ilusão? Então por que buscar inspiração na natureza para este design intencional? Teleologia pura! Argh, isso é como assassinar todos os darwinistas xiitas fundamentalistas... Foi Darwin quem disse primeiro!