Nature Communications 8 Article number: 14881 (2017); Published: 28 March 2017; Updated: 11 August 2017

The original version of this Article contained an error in which the second affiliation ‘Chemical and Biological Engineering Department, Northwestern University, Evanston, Illinois 60208, USA’; was inadvertently switched with the third affiliation ‘School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China’.

Additionally, ‘Shaanxi’ was misspelt as ‘Shaansi’. This has now been corrected in both the PDF and HTML versions of the Article.