Scientific Reports 6: Article number: 23297; published online: 22 March 2016; updated: 31 May 2016

In this Article, Roberto Di Leonardo is incorrectly affiliated with ‘CNR-IMIP, UOS Roma, Dipartimento di Fisica Università Sapienza, I-00185, Roma, Italy’. The correct affiliation is listed below:

NANOTEC-CNR, Institute of Nanotechnology, Soft and Living Matter Laboratory, Roma, Italy.