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. 2020 Sep 2;117(37):22657–22664. doi: 10.1073/pnas.2010413117

Fig. 1.

Fig. 1.

STM images at 5 K reveal that palladium islands are predominantly single layer in height when low coverages of palladium are deposited on Ag(111) at 300 K. (A) The STM image for 0.04 ML of palladium deposited on Ag(111) at 300 K shows hexagonal islands with an average width of 9.8 ± 1.5 nm. The width of the palladium islands is measured perpendicular to two opposite sides of the hexagon, as shown by the white line scan. Inset shows atomic resolution of the Ag(111) terrace. (B) The apparent height of a palladium island is 144.7 ± 8.2 pm based on the line scan in A and is consistent for all palladium coverages measured. The statistics for the STM analysis are reported in SI Appendix, Table S1 and Fig. S2. Imaging conditions are 0.70 V, 0.60 nA, 5 K.