Nanorod Image (image) The Optical Society Share Print E-Mail Caption This image shows the type of gold nanorods the team used in their research. Gold is biocompatible and scatters light well, making it a good candidate to help study the viscous properties of mucus. Credit Wei-Chen Wu and Joseph Tracy/NCSU Usage Restrictions Include caption & credit Share Print E-Mail 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.