Nature Communications 8:312 doi:10.1038/s41467-017-00390-1; Article pubilshed online: 22 Aug 2017

We regretfully omitted to give credit to a previous figure upon which the surface-tension scheme in Fig. 1b is based. The caption to Fig. 1 should have included the following: “The surface-tension scheme in Fig. 1b is adapted from Fig. 1a in Noh, J., Jeong, S. & Lee, J.-Y. Ultrafast formation of air-processable and high-quality polymer films on an aqueous substrate. Nat. Commun. 7, 12374 (2016).”