03 April 2020
Vol 368, Issue 6486

About The Cover

Cover image expansion

COVER A selection of three-dimensional (3D) atomic structures of platinum nanocrystals in solution. Transmission electron microscopy images of individual rotating nanocrystals were reconstructed to generate the 3D density maps. The resultant atomic structures represent the intrinsic structural heterogeneity of ligand-protected nanocrystals synthesized in a single batch. See page 60.
Illustration: Younghee Lee