Device prototype (IMAGE) ARC Centre of Excellence in Exciton Science Caption A demonstration of the optical effects made possible using the nanoscale assembly method to align gold nanorods within a material. Different colours become visible to the observer as the angle of the prototype device changes. Credit Heyou Zhang (Exciton Science) Usage Restrictions Credit: Heyou Zhang (Exciton Science) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.