Metamaterials: Blue-Sky Chimera or Revolution in Microwaves and Photonics
Metamaterials, which are broadly defined as effectively homogeneous electromagnetic structures exhibiting unusual properties � such as negative refraction, sub-wavelength resolution, coupled-mode enhancement, infinite wavelength propagation, zeroth-order resonance, full-space leaky-wave radiation � have drawn huge interest in both the physics and engineering communities since their first experimental demonstration in 2000.
As all novel ideas in science and technology, metamaterials have raised considerable controversies, some believing that they represent a mode topic restricted to academic studies, others seeing in them a revolutionary paradigm for tomorrow's electrodynamics and optics.
This presentation attempts to address the question on the actuel potential of metamaterials in a critical manner and tries to provide a vision of the future directions of research and industrial developments in this field. First, it shows that, in contrast to typical mode topics rediscovering ideas established in the past or borrowing ideas from other fields without scientific grounds, metamaterials are based on some fundamentally novel and useful concepts. Next, it shows a number of practical microwave applications with superior performance and/or functionality compared to prior state-of-the-art microwave engineering solutions. Finally, it discusses the next generation of metamaterials in connection with most recent micro and nanotechnologies.