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2005 J. Phys.: Condens. Matter 17 6301-6305 doi: 10.1088/0953-8984/17/41/001
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Abstract. We present new data for the electrical conductivity of foams in which the liquid fraction ranges from two to seventy per cent. We compare with a comprehensive collection of prior data, and we model all results with simple empirical formulae. We achieve a unified description that applies equally to dry foams and emulsions, where the droplets are highly compressed, as well as to dilute suspensions of spherical particles, where the particle separation is large. In the former limit, Lemlich's result is recovered; in the latter limit, Maxwell's result is recovered.
Print publication: Issue 41 (19 October 2005) |
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