Midolo Leonardo, Schliesser Albert, Fiore Andrea
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, Eindhoven, The Netherlands.
Nat Nanotechnol. 2018 Feb;13(2):173. doi: 10.1038/s41565-018-0066-6.
In the version of this Perspective originally published, in Fig. 1, in the green box labelled 'Mechanics', an erroneous grey rectangle was included; it has now been removed and the figure replaced in the online versions of the Perspective.