Pattern transition between periodic Liesegang pattern and crystal growth regime in reaction–diffusion systems

Precipitation patterns formed by self-organizing processes in porous media

“…Gelatin in particular is known for promoting Liesegang band formation (Lagzi & Ueyama 2009; Henisch 2005), while agarose promotes formation of randomly oriented crystals in silver chromate systems (Barge 2009; Henisch 2005). We observed in a previous study (Barge et al.…”

“…2010). In some systems, crystals or bands can be produced in the same type of gel, and the morphological transition between randomly spaced crystals and banding is related to relative rates of heterogeneous and surface nucleation (Lagzi & Ueyama 2009), which in turn can depend on the chemical properties of the medium (e.g., gel concentration (Toramaru et al. 2003) or presence of chemical species that do not take part in reactions (Barge et al.…”

Reaction–diffusion based co-synthesis of stable α- and β-cobalt hydroxide in bio-organic gels

“…Depending on the gel, we might later on see a Liesegang band (using gelatin) or a static continuous band (using agar). Based on the recent report by Lagzi and Ueyama [19], it can be proposed that in gelatin, a high nucleation rate leads to a large number of small crystals dispersed in the polymer matrix, favouring banding. In contrast, in agar, less nuclei are formed and crystals are grown by successive aggregation, leading to more continuous and homogeneous mineralization.…”

Precipitation Behavior in Liesegang Systems under Microwave Irradiation

“…Such pattern formation frequently inspires microstructural design in materials science. Moreover, morphological pattern transitions between periodic precipitation and tree-like crystal aggregates are scientifically interesting [1] [2]. Liesegang phenomena usually manifest themselves when a concentrated salt solution diffuses through a gel that contains another electrolyte at a lower concentration.…”