How Small Is A Quantum Dot? (IMAGE) Swansea University Caption This image shows a size comparison in nanometres of a football, human hair and quantum dots, which are less than 10 nanometres. Credit S Pitchaimuthu, Swansea 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.