Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens

[Image: see text] We describe and study the formation of confined chemical garden patterns. At low flow rates of injection of cobalt chloride solution into a Hele-Shaw cell filled with sodium silicate, the precipitate forms with a thin filament wrapping around an expanding “candy floss” structure. T...

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Autores principales: Rocha, Luis A. M., Thorne, Lewis, Wong, Jasper J., Cartwright, Julyan H. E., Cardoso, Silvana S. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161446/
https://www.ncbi.nlm.nih.gov/pubmed/35593590
http://dx.doi.org/10.1021/acs.langmuir.2c00633
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author Rocha, Luis A. M.
Thorne, Lewis
Wong, Jasper J.
Cartwright, Julyan H. E.
Cardoso, Silvana S. S.
author_facet Rocha, Luis A. M.
Thorne, Lewis
Wong, Jasper J.
Cartwright, Julyan H. E.
Cardoso, Silvana S. S.
author_sort Rocha, Luis A. M.
collection PubMed
description [Image: see text] We describe and study the formation of confined chemical garden patterns. At low flow rates of injection of cobalt chloride solution into a Hele-Shaw cell filled with sodium silicate, the precipitate forms with a thin filament wrapping around an expanding “candy floss” structure. The result is the formation of an Archimedean spiral structure. We model the growth of the structure mathematically. We estimate the effective density of the precipitate and calculate the membrane permeability. We set the results within the context of recent experimental and modeling work on confined chemical garden filaments.
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spelling pubmed-91614462022-06-03 Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens Rocha, Luis A. M. Thorne, Lewis Wong, Jasper J. Cartwright, Julyan H. E. Cardoso, Silvana S. S. Langmuir [Image: see text] We describe and study the formation of confined chemical garden patterns. At low flow rates of injection of cobalt chloride solution into a Hele-Shaw cell filled with sodium silicate, the precipitate forms with a thin filament wrapping around an expanding “candy floss” structure. The result is the formation of an Archimedean spiral structure. We model the growth of the structure mathematically. We estimate the effective density of the precipitate and calculate the membrane permeability. We set the results within the context of recent experimental and modeling work on confined chemical garden filaments. American Chemical Society 2022-05-20 2022-05-31 /pmc/articles/PMC9161446/ /pubmed/35593590 http://dx.doi.org/10.1021/acs.langmuir.2c00633 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Rocha, Luis A. M.
Thorne, Lewis
Wong, Jasper J.
Cartwright, Julyan H. E.
Cardoso, Silvana S. S.
Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title_full Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title_fullStr Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title_full_unstemmed Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title_short Archimedean Spirals Form at Low Flow Rates in Confined Chemical Gardens
title_sort archimedean spirals form at low flow rates in confined chemical gardens
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161446/
https://www.ncbi.nlm.nih.gov/pubmed/35593590
http://dx.doi.org/10.1021/acs.langmuir.2c00633
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