<title>Remarkable transmission of radiation through a wall of long metallic bricks</title>

Abstract

It is shown that microwave radiation can be transmitted through a wall of aluminium-alloy bricks even though the width of the gaps between the metallic elements is less than 5% of the radiation wavelength. Up to 90% of the radiation made incident upon the wall is transmitted, with both linear polarisations being passed. Experimental results are compared to theoretical predictions, proving that the transmission mechanism relies upon self-coupled surface plasmon resonances in what are effectively Fabry-Perot cavities.

Broadband Brewster transmission through 2D metallic gratings

“…These results may be particularly stimulating to realize broadband absorbers, energy concentrators and linear polarizers, as speculated for the 1-D geometry in Ref. 5 13,14 In Ref. 13, transmission was measured only at normal incidence, while in Ref.…”