Among optics and electromagnetics researchers today, the term “metamaterials” is often taken to be synonymous with materials that have a negative refractive index, but there is much more to metamaterials than that. As research evolves, these unique composite materials will be fabricated with new, multifunctional architectures that will enable applications in sensing, security, transportation and other areas.
by Akhlesh Lakhtakia and Tom G. Mackay