Metamaterial are materials with properties not tipically found in nature.

Metamaterial are materials with properties not tipically found in nature. Nanomanufacturing could develop advanced metamaterial.
The 3D print was done using Focused Electron Beam Induced Deposition (FEBID). Electron beams are used in nanoscale manufacturing for the precise control they offer. In this case an electron beam is used to make a complex, three-dimensional shape, by reacting gas molecules on a controlled surface.

FEBID is direct writing method of fabrication that involves computer aided 3D simulation, and 3D design (CAD). Through simulation researchers were able to predict the degrees necessary to move the electron beam in order to create desired geometric shapes.