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Comparison of the change in hydrocarbon tilt angle as a function of the electrode potential for a mixed DMPC/cholesterol (7:3) film spread on a gold electrode surface from a vesicle solution. The tilt angles were measured in the present work using neutron reflectivity (▴), and independently evaluated (X. Bin, I. Zawisza, S. Horswell, and J. Lipkowski, unpublished material) from IR results (▪).
