This book presents novel and fundamental aspects of metamaterials, which have been overlooked in most previous publications,
including chirality, non-reciprocity, and the Dirac-cone formation. It also describes the cutting-edge achievements of experimental
studies in the last several years: the development of high-regularity metasurfaces in optical frequencies, high-performance
components in the terahertz range, and active, chiral, nonlinear and non-reciprocal metamaterials in the microwave range.
Presented here are unique features such as tunable metamaterials based on the discharge plasma, selective thermal emission
from plasmonic metasurfaces, and the classical analogue of the electromagnetically induced transparency. These most advanced
research achievements are explained in understandable terms by experts in each topic. The descriptions with many practical
examples facilitate learning, and not only researchers and experts in this field but also graduate students can read the book
without difficulty. The reader finds how these new concepts and new developments are being utilized for practical applications.