Correction to: Nature Materials https://doi.org/10.1038/s41563-021-00945-0, published online 24 June 2021.

In the version of this News & Views originally published, in Fig. 1 the migration direction of the grain boundary and the location of electron-beam irradiation were incorrect in panels a and b, respectively. This has now been corrected and the updated figure is shown below.

Fig. 1
figure 1

Original and Corrected.