Extended Data Fig. 6: Isotope colour maps before and after filtering.
From: Imaging of isotope diffusion using atomic-scale vibrational spectroscopy

a, b, The isotope colour map in Fig. 3 before and after median filtering, respectively.
From: Imaging of isotope diffusion using atomic-scale vibrational spectroscopy

a, b, The isotope colour map in Fig. 3 before and after median filtering, respectively.