The aim of the rollerNIL project is to reproduce complex optical structures - biomimetic structural colours - using roller-based nanoimprint lithography. Master fabrication and in-line capable measuring systems are investigated. To understand the process, simulations are performed that make it possible to describe material and process requirements in detail.

The replication of undercut structures in this project represents a significant further development of NIL and aims to demonstrate the general possibility of applying large-scale biomimetic structural paints. The main task of ZONA is optical characterization, optical simulations and the application of electron microscopy techniques to the structures.