Article History
First Online: 3 April 2019
Change Date: 8 January 2020
Change Type: Update
Change Details: In the version of this Editorial originally published, the word ‘Comment’ in “In his Comment, Stephan Wagner explores” linked to an unrelated Article; it should have linked to S. Wagner & T. Reemtsma Nat. Nanotech. 14, 300–301 (2019). This has now been corrected in the online versions of the Editorial.
Free to read: This content has been made available to all.