Figure 3.
High resolution transmission electron microscopy images of single crystal AuNRs after irradiation with femtosecond and nanosecond pulse of 1 mJ/cm2 (0.5 μJ per pulse) and 250 mJ/cm2 (20 μJ per pulse), respectively. (a,b) Point defects and twinned particles after femtosecond laser irradiation. (c) Twinned particles after nanosecond laser irradiation. (d) Scheme of the proposed mechanism for shape transformation. Adapted with permission from ref (42). Copyright 2000 American Chemical Society.