Drag reduction and nanobubbles (IMAGE) University of Sydney Caption When the surfaces were studied within microfluidic devices, it was revealed their ability to greatly reduce hydrodynamic drag is due to the spontaneous formation of nanobubbles. Credit Neto et al. Usage Restrictions Only use with this story, with credit. License Original 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.