Rolled-Up Metamaterials

Abstract EN

In this paper we review metamaterials fabricated from self-rolling strained metal-semiconductor layer systems.

These systems relax their strain upon release from the substrate by rolling up into microtubes with a cross-section similar to a rolled-up carpet.

We show that the walls of these microtubes represent three-dimensional optical metamaterials which so far could be used, for example, for the realization of broadband hyperlenses, fishnet metamaterials, or optically active three-dimensional metamaterials utilizing the unique possibility to stack optically active semiconductor heterostructures and metallic nanostructures.

Furthermore, we discuss THz metamaterials based on arrays of rolled-up metal semiconductor microtubes and helices.