Figure 4: (a) TEM image of an isolated multibranched AuNP. (b) HRTEM image of the branch enclosed by the blue square in (a). The white arrows indicate the position of twin defects. SAED patterns are shown as insets. The white and black scale bars are 100 and 5 nm, respectively. Reproduced with permission from [21]. Copyright 2009 Elsevier.