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Effective interaction potential between two DNA-grafted-AuNPs. (A) Potential energy as a function of interparticle separation for two ds-DNA-AuNPs in two solutions of different μs. The minima position (circled point 1) corresponds to tangential contact between the two ds-DNA capped AuNPs. Simulation snapshots corresponding to circled points 1 and 2 are shown in panels B and C, respectively.
