Low temperature conductivity and ion dynamics in silver iodide-silver metaphosphate glasses.

Silver iodide-silver metaphosphate glasses xAgI·(1 - x)AgPO (x = 0.3, 0.4, and 0.

Band, target, and onion patterns in Co(OH)2 Liesegang systems.

The study of morphology and shape development has gained considerable interest in certain sciences, notably biology and geology. Liesegang experiments producing Co(OH)2 stratification are performed here, in one, two, and three dimensions for comparison of the pattern morphologies. We obtain well-resolved bands in one dimension, target patterns (rings) in two dimensions, and onion patterns (spherical shells) in three dimensions.

Ring morphology and pH effects in 2D and 1D Co(OH)2 Liesegang systems.

We study the factors that affect the morphology of Co(OH)(2) Liesegang rings, in a way to obtain concentric rings with large spacing, upon an appropriate variation in the experimental conditions. Such well-resolved patterns are obtained under optimum conditions: decrease in the concentration of the outer electrolyte, increase in the concentration of both the inner electrolyte and the gelatin in the hosting gel medium, and increase in the strength of a constant radial electric field applied across the pattern domain. The effect of pH on the bands in a 1D Co(OH)(2) Liesegang pattern is also investigated.