Correction to: Nature Nanotechnology https://doi.org/10.1038/s41565-018-0204-1, published online 23 July 2018.

In the version of this Article originally published, the corresponding author names in the author list appeared in the reverse order; they should have read ‘Jinxing Zhang and Ce-Wan Nan’. The order of these authors’ initials in the ‘Correspondence and requests for materials’ statement were similarly affected. These errors have now been corrected in all versions of the Article.