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Schematic representation of the interaction potential between two disklike micelles as a function of their surface separation h. The total potential E(h) (“fusion potential,” solid line) consists of the topological barrier Et (“bare fusion potential,” dotted line) and dlvo interactions Ed(h) (dashed line). Fusion typically occurs at a separation hf, while disks may fuse over a distance ξ. An expansion of E around h = hf defines a “penetration length” ℓ and a “radius of curvature” ξ.
