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Standard STM geometry used to quantify conductance at many points within a single-molecule switch. (a) Changes in tunneling current observed at a single point due to hydrogen tautomerization in naphthalocyanine on a NaCl bilayer on Cu(111). (b) Schematic of tautomerization. (c) Spatial mapping of switching rate, with each pixel representing approximately 100 switching events. Adapted from ref (129).
