Metasurfaces and their applications

By Aobo Li, Shreya Singh, Daniel F. Sievenpiper. Nanophotonics, 2018

522 citations recorded by the source corpus.

Abstract Metasurfaces are a topic of significant research and are used in various applications due to their unique ability to manipulate electromagnetic waves in microwave and optical frequencies. These artificial sheet materials, which are usually composed of metallic patches or dielectric etchings in planar or multi-layer configurations with subwavelength thickness, have the advantages of light weight, ease of fabrication, and ability to control wave propagation both on the surface and in the surrounding free space. Recent progress in the field has been classified by application and reviewed in this article. Starting with the development of frequency-selective surfaces and metamaterials, the unique capabilities of different kinds of metasurfaces have been highlighted. Surface impedance can be varied and manipulated by patterning the metasurface unit cells, which has broad applications in surface wave absorbers and surface waveguides. They also enable beam shaping in both transmission and reflection. Another important application is to radiate in a leaky wave mode as an antenna. Other applications of metasurfaces include cloaking, polarizers, and modulators. The controllable surface refractive index provided by metasurfaces can also be applied to lenses. When active and non-linear components are added to traditional metasurfaces, exceptional tunability and switching ability are enabled. Finally, metasurfaces allow applications in new forms of imaging.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/2daf769204e02ed13d19577d6e19bae62b316371

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In Aerospace Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Phase-Induced Frequency Conversion and Doppler Effect With Time-Modulated Metasurfaces (2020, background): “METASURFACES have produced a dramatic impact on electromagnetic engineering, thanks to their ability to manipulate the wavefront of the reflected and transmitted waves at will [1], [2].”
6G and Beyond: The Future of Wireless Communications Systems (2020, background): “Common functions include wave steering, focusing, collimating (i.e., producing a planar wavefront as a response to an impinging wave), polarizing, phase altering, full or partial absorption, frequency selective ﬁltering and even modulation [60], [64].”
Metantenna: When Metasurface Meets Antenna Again (2020, background): “A more detailed review of active metasurface absorbers can be found in [124].”