3D printed metamaterials are an area of interest to many scientists right now. In short, metamaterials are synthetic materials made up of many individually engineered "cells" that work together to produce properties not found in nature. In electromagnetic metamaterials, electromagnetic waves move through the material, triggering each cell to react in a specific way to control how the wave behaves. Until now, the fabrication of electromagnetic metamaterials has been mostly relegated to 2D circuit boards, limiting what they can do and how effective they are. But materials scientists and chemists at Duke have now found a way to 3D print electromagnetic metamaterials with commercial 3D printers, opening up new applications. Read more at 3DPrint.com: http://3dprint.com/173457/duke-3d-pr...metamaterials/