Article pubs.acs.org/Langmuir
Reversible Adsorption Kinetics of Near Surface Dimer Colloids Paul F. Salipante* and Steven D. Hudson Polymers and Complex Fluids Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-1070, United States ABSTRACT: We investigate the effect of shape on reversible adsorption kinetics using colloidal polystyrene dimers near a solid glass surface as a model system. The interaction between colloid and wall is tuned using electrostatic, depletion, and gravity forces to produce a double-well potential. The dwell time in each of the potential wells is measured from long duration particle trajectories. The height of each monomer relative to the glass surface is measured to a resolution of
