Correction to: Nature Physics https://doi.org/10.1038/s41567-022-01563-6. Published online 14 April 2022.

In the version of this article initially published, in the “Sample preparation” section of Methods, the solvent used for 1wt% Teflon AF1600 solution was incorrectly specified as FC-43 (Sigma-Aldrich) rather than perfluoro-2-butyltetrahydrofuran (FC-75, 97%, Fisher Scientific). The error has been corrected in the HTML and PDF versions of the article.