Golden rules for building atomic blocks 1 (IMAGE) National University of Singapore Caption The clock model shows the rotation alignment between the hour hand (Top hBN), minute hand (middle graphene) and second hand (Bottom hBN). The combination of top hBN, middle graphene and bottom hBn leads to a supermoiré lattice structure at the centre of clock. Credit National University of Singapore Usage Restrictions NA 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.