Luminescent tubular precipitation structures from reactant-loaded pellets

Fryfogle, Patrick J.; Nelson, Eric J.; Pagano, Jason J.

doi:10.1016/j.colsurfa.2015.09.005

Cited by 7 publications

(7 citation statements)

References 34 publications

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“…They form spontaneously when a solid salt particle is placed into an aqueous solution containing anions such as silicate, borate, carbonate, phosphate, sulfide, or even hydroxide ( Fig. 1 , A to D) ( 40 , 41 ). In the classic example of reactions with silicates, the thin tube wall consists of metal (hydr)oxide and an outer layer of amorphous silica that can also be absent ( 42 ).…”

Section: Hollow Tubesmentioning

confidence: 99%

Self-organization in precipitation reactions far from the equilibrium

2016

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Section: Hollow Tubesmentioning

confidence: 99%

Self-organization in precipitation reactions far from the equilibrium

2016

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“…Classical chemical gardens (19)(20)(21) consist of hollow precipitate tubes that form when a metal salt seed is placed into aqueous solutions of silicate, carbonate, phosphate, borate, and some other anions. The thin, hollow tubes typically consist of an outer layer of silica (in silicate systems) and an inner layer rich in metal hydroxides or oxides.…”

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confidence: 99%

Wavy membranes and the growth rate of a planar chemical garden: Enhanced diffusion and bioenergetics

Ding

Batista

Steinbock

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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To model ion transport across protocell membranes in Hadean hydrothermal vents, we consider both theoretically and experimentally the planar growth of a precipitate membrane formed at the interface between two parallel fluid streams in a 2D microfluidic reactor. The growth rate of the precipitate is found to be proportional to the square root of time, which is characteristic of diffusive transport. However, the dependence of the growth rate on the concentrations of hydroxide and metal ions is approximately linear and quadratic, respectively. We show that such a difference in ionic transport dynamics arises from the enhanced transport of metal ions across a thin gel layer present at the surface of the precipitate. The fluctuations in transverse velocity in this wavy porous gel layer allow an enhanced transport of the cation, so that the effective diffusivity is about one order of magnitude higher than that expected from molecular diffusion alone. Our theoretical predictions are in excellent agreement with our laboratory measurements of the growth of a manganese hydroxide membrane in a microfluidic channel, and this enhanced transport is thought to have been needed to account for the bioenergetics of the first single-celled organisms.

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“…In an analogous manner, injection of ZnSO 4 solution with dispersed CdSe‐ZnS quantum dots in a silicate solution results in Zn‐based chemical gardens that incorporated the quantum dots [12] . A similar approach was used to generate phosphorescent chemical gardens with incorporated ZnS [13] . Very recently, the effect of L‐amino acids in the growth of iron silicate chemical gardens was investigated and it was found that the concentration of amino acids after a certain threshold inhibited the growth, while the chemical structure of the amino acid side chain did not play a role in their growth [14] .…”

Section: Introductionmentioning

confidence: 99%

“…[12] A similar approach was used to generate phosphorescent chemical gardens with incorporated ZnS. [13] Very recently, the effect of L-amino acids in the growth of iron silicate chemical gardens was investigated and it was found that the concentration of amino acids after a certain threshold inhibited the growth, while the chemical structure of the amino acid side chain did not play a role in their growth. [14] Recently, the potential applications of chemical gardens in biomedicine have been suggested.…”

Section: Introductionmentioning

confidence: 99%

Generation of Chemobrionic Jellyfish‐Like Structures That Mechanically Divide and Exhibit Biomimetic “Symbiosis”

Angelis

Katsanou

Giannopoulos-Dimitriou

et al. 2022

ChemSystemsChem

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Addition of CaCl 2 into a highly alkaline phosphate buffer results in the generation of submerged transparent chemobrionic bubbles mimicking jellyfish that are stable and malleable. A compartmentalized O 2 -generating reaction triggered the growth of regular vertical chemical gardens from the bubble through a gas micro-rocket propelled mechanism. The bubbles can mechanically separate to yield two daughter bubbles in a process reminiscent of cytokinesis or natural jellyfish regeneration, and then re-grow through new injection of CaCl 2 . Finally, loading of E. coli bacteria genetically engineered to exert green fluorescence inside the bubbles was demonstrated in a biomimetic analogue of "symbiosis".

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Luminescent tubular precipitation structures from reactant-loaded pellets

Cited by 7 publications

References 34 publications

Self-organization in precipitation reactions far from the equilibrium

Self-organization in precipitation reactions far from the equilibrium

Wavy membranes and the growth rate of a planar chemical garden: Enhanced diffusion and bioenergetics

Generation of Chemobrionic Jellyfish‐Like Structures That Mechanically Divide and Exhibit Biomimetic “Symbiosis”

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