OPTICS 3 (IMAGE) Rice University Caption The point spread functions of single molecules, captured as double lobes through a phase mask (left), can tell researchers where the molecule is in 3D space. The distance between the lobes gives them the molecule's depth. Credit Landes Research Group/Rice University Usage Restrictions None 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.