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À propos de : Measurement of the Long- and Short-Range HydrophobicAttraction between Surfactant-Coated Surfaces        

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  • Measurement of the Long- and Short-Range HydrophobicAttraction between Surfactant-Coated Surfaces
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  • We have measured the attractive long-range ‘hydrophobic' forces in water between double-chainedsurfactant monolayers physisorbed on mica. We used both normal and high-speed video cameras to followthe dynamics and possible rate-dependence of force−distance profiles in the distance regime from 1000Å to adhesive contact, including the short-distance regime below 100 Åthe regime of greatest biologicalinterest. We find that the hydrophobic interaction follows a double-exponential function down to separationsof ∼50 Å, after which point the attractive force appears to become considerably stronger.
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