Contents

19 January 2018
Vol 359, Issue 6373

About The Cover

Cover image expansion

COVER Artistic rendering of a long chain of self-assembled DNA platforms bearing multiple rotor arms. The motion of the arms between docking stations (yellow) defined on the plates can be precisely directed by externally applied electric fields. Such systems could form the basis for computer-controlled nanorobotic assembly lines in which the arms cooperate in the synthesis of nanoscale structures. See pages 279 and 296.
Illustration: C. Bickel/Science; Data: E. Kopperger and F. C. Simmel/Technical University of Munich