Atomic Force Microscopy Scan (IMAGE) Optica Caption This is an atomic force microscopy scan of the quantum dots over an area 1 micrometer (millionth of a meter) x 1 micrometer. Credit Alan Liu Usage Restrictions Include caption and credit 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.