2014/11/20 by Viktar Asadchy, V. S. Asadchy, Y. Radi +5 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Antenna Design and Analysis #Computer science #Metamaterial #Metamaterials and Metasurfaces Applications #Optics #Phase (matter) #Physics #Position (finance) #Reflection (computer programming) #Reflector (photography) #Scattering #physics.optics
paper · pdf · doi:10.1103/physrevlett.114.095503
published as Phys. Rev. Lett. 114, 095503 (2015) · 28 pages, 25 figures, presented in Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS): http://ieeexplore.ieee.org/xpl/abstractAuthors.jsp?arnumber=6948670
arxiv created 2014/11/20 · openalex publication_date 2015/03/06 · arxiv updated 2015/03/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Conventional mirrors obey the simple reflection law that 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 or position some phase-correcting elements on top of a mirror surface. Here we show, both theoretically and experimentally, that full-power reflection with general control over the reflected wave phase is possible with a single-layer array of deeply subwavelength 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 electrically and magnetically polarizable inclusions. The proposed subwavelength inclusions possess desired reflecting properties at the operational frequency band, while at other frequencies the array is practically transparent. The metamirror concept leads to a variety of applications over the entire electromagnetic spectrum, such as optically transparent focusing antennas for satellites, multifrequency reflector antennas for radio astronomy, low-profile conformal antennas for telecommunications, and nanoreflectarray antennas for integrated optics.