Smart Particle Path (image) American Physical Society Caption The path of a smart particle is color-coded to indicate the temperatures it wirelessly reports back during its travels. Credit Y. Gasteuil, W.L. Shew, M. Gibert, F. Chill'a, B. Castaing and J.-F. Pinton Usage Restrictions For news and educational purposes only. 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.