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Self-organization in precipitation reactions far from the equilibrium

Title: Self-organization In Precipitation Reactions Far From The Equilibrium.
Name(s): Nakouzi, Elias, author
Steinbock, Oliver, author
Type of Resource: text
Genre: Text
Date Issued: 2016-08
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Far from the thermodynamic equilibrium, many precipitation reactions create complex product structures with fascinating features caused by their unusual origins. Unlike the dissipative patterns in other self-organizing reactions, these features can be permanent, suggesting potential applications in materials science and engineering. We review four distinct classes of precipitation reactions, describe similarities and differences, and discuss related challenges for theoretical studies. These classes are hollow micro- and macrotubes in chemical gardens, polycrystalline silica carbonate aggregates (biomorphs), Liesegang bands, and propagating precipitation-dissolution fronts. In many cases, these systems show intricate structural hierarchies that span from the nanometer scale into the macroscopic world. We summarize recent experimental progress that often involves growth under tightly regulated conditions by means of wet stamping, holographic heating, and controlled electric, magnetic, or pH perturbations. In this research field, progress requires mechanistic insights that cannot be derived from experiments alone. We discuss how mesoscopic aspects of the product structures can be modeled by reaction-transport equations and suggest important targets for future studies that should also include materials features at the nanoscale.
Identifier: FSU_libsubv1_wos_000383734300047 (IID), 10.1126/sciadv.1601144 (DOI)
Keywords: alkaline-earth carbonates, charged nanoparticles, chemical garden patterns, kappa-carrageenan gel, liesegang pattern-formation, periodic precipitation, propagating fronts, reaction-diffusion system, silica-carbonate biomorphs, tubular precipitation
Publication Note: The publisher’s version of record is available at
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Owner Institution: FSU
Is Part Of: Science Advances.
Issue: iss. 8, vol. 2

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Nakouzi, E., & Steinbock, O. (2016). Self-organization In Precipitation Reactions Far From The Equilibrium. Science Advances. Retrieved from