Electrokinetics of Concentrated Colloidal Dispersions

Professor Lee White, Professor Stan Miklavcic and Dr Bronwyn Hajek


The project involves the application of a self-consistent cell-model theory of electrokinetics to the problem of determining the electrical conductivity of a dense suspension of spherical colloidal particles. The standard electrokinetic equations, subject to self-consistent boundary conditions, are studied within the particle-averaged cell model to develop formulae for the dynamic mobility, electrical conductivity and effective permittivity appropriate to these types of suspensions.

Publications

B.H. Bradshaw-Hajek, S.J. Miklavcic, L.R. White (2010)The actual dielectric response function for a colloidal suspension of spherical particles,  Langmuir, DOI: 10.1021/la904767p.

B.H. Bradshaw-Hajek, S.J. Miklavcic, L.R. White (2010) High frequency behavior of the dynamic mobility and dielectric response of concentrated colloidal dispersions, Langmuir, 26(3), pp1656-1665.

B.H. Bradshaw-Hajek, S.J. Miklavcic, L.R. White (2009) Dynamic dielectric response of concentrated colloidal suspensions: comparison between theory and experiment, Langmuir, 25(4), pp1961, 1969.

Bradshaw-Hajek, B.H., Miklavcic, S.J. & White, L.R., (2008) Frequency-dependent electrical conductivity of concentrated dispersions of spherical colloidal particlesLangmuir, Vol. 24, Issue 9, pages 4512-4522.

Areas of study and research

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