« Liquid-gas » transition in charged colloidal dispersions
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چکیده
منابع مشابه
Coalescence of Charged Droplets in Agitated Liquid-Liquid Dispersions
Experimental studies have been performed to assess the effect of drop charge on turbulent drop coalescence. Although it is well known that surface charge can affect coalescence rates of Brownian particles in a quiescent medium, no studies have been found in the literature which explicitly examine charge effects on larger drops in turbulent media. Results demonstate that drop charge can substant...
متن کاملKinetics study of crystallization with the disorder-bcc-fcc phase transition of charged colloidal dispersions.
Structure transformation (disorder-bcc-fcc) in charged colloidal dispersions, as a manifestation of the Ostwald's step rule, was confirmed by means of reflection spectrum (RS) measurements in our previous study. By taking advantage of a reflection spectrum containing plenty of information about the crystallization behaviors, time-dependent changes of parameters associated with the crystal struc...
متن کاملReentrant phase transition in charged colloidal suspensions.
We report the observation of a novel phase transition in dilute aqueous suspensions of polystyrene particles as a function of ionic impurity concentration C. The suspension phase separates into dense and rare phases only for a restricted range of C which depends on particle concentration n. The dense phase has liquidlike or crystalline order depending on n and C. Free energies of the homogeneou...
متن کاملProbing the jellium model with colloidal dispersions of charged liposomes
The structure factor, S(q), is measured for a set of dispersions that consist of liposome vesicles with differing numbers of ionizable surface groups. These systems allow us to probe the dependence of the local structure on the particle bare charge systematically. The height of the nearest neighbor peak in S(q), which is a direct measure of the spatial order of the vesicles, does not increase m...
متن کاملWigner - Seitz model of charged lamellar colloidal dispersions
A Wigner-Seitz model of charged lamellar colloidal dispersions. Abstract A concentrated suspension of lamellar colloidal particles (e. g. clay) is modelled by considering a single, uniformly charged, finite platelet confined with co-and counterions to a Wigner-Seitz (WS) cell. The system is treated within Poisson-Boltzmann theory, with appropriate boundary conditions on the surface of the WS ce...
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ژورنال
عنوان ژورنال: Journal de Physique Lettres
سال: 1984
ISSN: 0302-072X
DOI: 10.1051/jphyslet:01984004507030700