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Interaction between a rodlike inclusion and a supported bilayer membrane.

The interactions between a rodlike inclusion and a supported copolymer bilayer membrane are investigated by using the self-consistent field theory. For different system parameters, physical observables, such as the interaction free energy, entropy, and translocation energy barrier, are obtained. Particular emphasis is put on the closely energetic and entropic analyses of the interaction. It shows that the interfacial energy provides a qualitative trend and dominates the basic shape of the interaction free energy curve; the combination of chemical potential energy and total entropy contribution is responsible for the translocation energy barrier and the weak attraction in the vicinity of upper monolayer surface. We also specify the nature, height, and shape of the energy barrier to translocation. Particularly, the height is roughly proportional to the rod radius.