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. Author manuscript; available in PMC: 2018 Apr 11.
Published in final edited form as: ACS Nano. 2017 Jul 7;11(7):7494–7507. doi: 10.1021/acsnano.7b04031

Figure 4.

Figure 4

Calculated stability as quantified by the defined edge energy (eq 1). (a) APC non-passivated. (b) APC passivated. (c) OC non-passivated. (d) OC passivated. For all cases, passivation stabilizes the structures (lowers the edge energy). The presence of an edge, which is the destabilizing factor, represents a larger fraction of the system when the spacing between the holes is decreased or the radius of the holes is increased (therefore edge energy increases). For seven of the passivated cases incrementing the radius to the next largest value can stabilize the system. In each circumstance the number of self-passivation segments in the edge is larger in the less stable structure.