Functional metamirrors
V. S. Asadchy, Y. Radi, J. Vehmas, S. A. Tretyakov

TL;DR
This paper introduces a novel type of artificial surface called a metamirror, capable of full-power reflection with arbitrary phase control using a single-layer array of sub-wavelength inclusions, enabling advanced electromagnetic wave manipulation.
Contribution
It demonstrates theoretically and experimentally that a single-layer array of electrically and magnetically polarizable inclusions can independently engineer forward and backward scattering for full-power, phase-controlled reflection.
Findings
Full-power reflection with arbitrary phase control achieved.
Sub-wavelength inclusions enable frequency-selective transparency.
Experimental validation confirms theoretical predictions.
Abstract
Conventional mirrors obey Snell's reflection law: a plane wave is reflected as a plane wave, at the same angle. To engineer spatial distributions of fields reflected from a mirror, one can either shape the reflector (for example, creating a parabolic reflector) or position some phase-correcting elements on top of a mirror surface (for example, designing a reflectarray antenna). Here we show, both theoretically and experimentally, that full-power reflection with general control over reflected wave phase is possible with a single-layer array of deeply sub-wavelength inclusions. These proposed artificial surfaces, metamirrors, provide various functions of shaped or nonuniform reflectors without utilizing any mirror. This can be achieved only if the forward and backward scattering of the inclusions in the array can be engineered independently, and we prove that it is possible using…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
