For NCs capped with dBR (Figure ) and dNR (Figure ) ligands, the PMF curves show similar characteristics, with relatively flat minima and little difference in the potential well depths between the touch and lock modes. Specifically, for dBR, ε t and ε l are -31.2 kJ/mol and -39.5 kJ/mol, respectively, while the corresponding values for dNR are -17.2 kJ/mol and -25.0 kJ/mol. For the dBR system, the energy barrier between the touch and lock states is only 3.3 kJ/mol (Figure ), whereas in the dNR system, there is no barrier between these states (Figure ). This suggests that when NCs capped with these ligands come into proximity, the system does not dwell in the touch state but continues to move closer until reaching the lower free-energy lock state.