Oppositely charged model ceramic colloids: numerical predictions and experimental observations by confocal laser scanning microscopy

Abstract : Fluorescent silica and alumina-like spherical particles with almost equal sizes are synthesized. Dilute aqueous suspensions are prepared with various ratios of those colloidal particles that exhibit opposite surface charges. These suspensions undergo heteroaggregation for a wide range of compositions. The structure of the formed aggregates is analyzed by means of confocal microscopy. The experimental results are compared to those of Brownian dynamics simulations in which the interactions between colloids are modeled by the DLVO potential. Good agreement between experiments and simulations is obtained.
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Submitted on : Monday, January 24, 2011 - 4:10:23 PM
Last modification on : Wednesday, February 14, 2018 - 4:02:07 PM

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Malgorzata Anna Piechowiak, Arnaud Videcoq, Fabrice Rossignol, Cécile Pagnoux, Claire Carrion, et al.. Oppositely charged model ceramic colloids: numerical predictions and experimental observations by confocal laser scanning microscopy. Langmuir, American Chemical Society, 2010, 26 (15), pp.12540-12547. ⟨10.1021/la101027d⟩. ⟨hal-00559020⟩

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