BF image with corresponding SAED pattern and HRTEM image of approximately 70° kink in InP NWs. (a) BF image of approximately 70° kink in InP NWs. The SAED pattern from the kink area (inset) matches with cubic zinc blende structure. (b) HRTEM image of the selected region in (a). Dense SFs indicated by white arrows emerge in the kink area. The twin indicated by TB appears in the kink area.