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HAADF-STEM and high-resolution HAADF-STEM images of a trimer (a,b) and a welded trimer (c,d) of Au NRs obtained without laser irradiation and at 650 μJ/cm2 laser pulses, respectively. Insets in panels (a,c) show the respective electron diffraction patterns. Adapted with permission from ref (54). Copyright 2015 American Chemical Society.
