Journal ArticleDOI
Mutual coagulation of colloidal dispersions
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TLDR
In this paper, a quantitative theory is presented which describes the kinetics of coagulation of colloidal systems containing more than one dispersed species, using the linear (Debye-Huckel) approximation for low surface potentials.Abstract:
A quantitative theory is presented which describes the kinetics of coagulation of colloidal systems containing more than one dispersed species. A general expression has been derived to describe the potential energy of interaction between dissimilar spherical colloidal particles, using the linear (Debye-Huckel) approximation for low surface potentials. An overall stability ratio has been defined which takes into account the possibility of interactions between like, as well as unlike, particles in the system. The errors introduced by the use of the linear approximation have been assessed in terms of their effects on the stability ratio, and found to be quite small. The theory has been used to describe the behaviour of a hypothetical system under various conditions.read more
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Journal ArticleDOI
Force measurements with the atomic force microscope: Technique, interpretation and applications
TL;DR: The atomic force microscope (AFM) is not only used to image the topography of solid surfaces at high resolution but also to measure force-versus-distance curves as discussed by the authors, which provide valuable information on local material properties such as elasticity, hardness, Hamaker constant, adhesion and surface charge densities.
Journal ArticleDOI
Colloid mobilization and transport in groundwater
TL;DR: In this paper, the authors present theories describing colloid mobilization, deposition, and transport, laboratory experiments in model systems designed to test these theories, and applications of these theories to colloid-facilitated transport experiments in natural groundwater systems.
ReportDOI
I. Selective Sorption of Bacteria from Seawater. II. Mechanism of the Initial Events in the Sorption of Marine Bacteria to Surfaces
TL;DR: In this article, a distinct sequence of sorption of different bacterial types has been observed both on glass slides and electron microscope grids immersed in seawater for periods of up to 24 hours.
Journal ArticleDOI
Mechanism of the Initial Events in the Sorption of Marine Bacteria to Surfaces
TL;DR: In this paper, the reverse phase is interpreted in terms of the balance between the electrical double-layer repulsion energies at different electrolyte concentrations and the van der Waals attractive energies.
Journal ArticleDOI
Nanoparticle colloidal stability in cell culture media and impact on cellular interactions
Thomas Moore,Laura Rodriguez-Lorenzo,Vera Hirsch,Sandor Balog,Dominic A. Urban,Corinne Jud,Barbara Rothen-Rutishauser,Marco Lattuada,Alke Petri-Fink +8 more
TL;DR: The factors that determine NP colloidal stability, the various efforts to stabilize NP in biological media, the methods to characterize NP colloid stability in situ, and a discussion regarding NP interactions with cells are examined.