IntroductionIn the past 5 years, metasurfaces have been a subject of an intense study due to their useful electromagnetic properties and the ability to overcome many drawbacks typically associated with metamaterials. While the idea of designing artificial surfaces may be traced several decades back and started with designing frequency selective surfaces and reflectarrays operating at radio frequencies, current advances in micro‐ and nano‐fabrication techniques allow very precise manipulation of design features at the subwavelength scale even in the optical domain. These opened a new avenue to envision and implement different metasurfaces with the most unprecedented and fascinating electromagnetic properties in the entire electromagnetic spectrum. Examples include ultrathin lenses, negative refraction, holograms, chirality enhancement, polarization, and surface waves control. The introduction of active, nonlinear, and all‐dielectric metasurfaces increased diversity of functions and established a way toward industrial impact.Magnetic resonance imaging (MRI) is a particularly promising area for application of metamaterials and especially metasurfaces due to a very limited available space inside an MR machine and a narrow operational frequency band. Metamaterials structures suggest a novel useful opportunities to shape the radiofrequency field within the scanner. It was shown that Swiss roll arrays, magnetoinductive waveguides and wire medium structures can be
Physica Status Solidi (A) Applications and Materials Science – Wiley
Published: Jan 1, 2018
Keywords: ; ; ;
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