Figure 4From: Do Twin Boundaries Always Strengthen Metal Nanowires?(Color Online) Atomic configurations of a nanowire with square cross-section undera 3.6%,b 4.0%, andc 4.2% compressive strain; the twin spacing is 5.25 nm. Red spheres represent atoms in HCP structure, and purple spheres other atoms; FCC atoms are not shown in the figure for clarityBack to article page