Scattering effect (IMAGE) ARC Centre of Excellence in Exciton Science Caption An example of the effect described in the research. Top, the aluminium substrate coated with a silicon nitride thin film under ambient illumination. Bottom, the same substrate and coating produce a significantly different visual effect through iridescent scattering. Credit Exciton Science Usage Restrictions Credit: 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.