In the paper we show how to approximate the Voronoi diagram of a finite set of planar points in a chemical processor consisting of an agar-palladium thin layer and potassium iodide liquid diffusing on it. The configuration of a given point set is represented by the spatial distribution of Kl drops and the bisectors of the required Voronoi diagram are computed according to the PdCl2 + 2Kl = Pdl2↓ + 2KCl.
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Tolmachiev et al. (1996) studied this question.
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