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Colloidal superionic conductors

Nanoparticles with highly asymmetric sizes and charges that self-assemble into crystals via electrostatics may exhibit behaviors reminiscent of those of metals or superionic materials. Here, we use coarse-grained molecular simulations with underdamped Langevin dynamics to explore how a binary charge...

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Detalles Bibliográficos
Autores principales: Lin, Yange, Olvera de la Cruz, Monica
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10104562/
https://www.ncbi.nlm.nih.gov/pubmed/37018200
http://dx.doi.org/10.1073/pnas.2300257120
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author Lin, Yange
Olvera de la Cruz, Monica
author_facet Lin, Yange
Olvera de la Cruz, Monica
author_sort Lin, Yange
collection PubMed
description Nanoparticles with highly asymmetric sizes and charges that self-assemble into crystals via electrostatics may exhibit behaviors reminiscent of those of metals or superionic materials. Here, we use coarse-grained molecular simulations with underdamped Langevin dynamics to explore how a binary charged colloidal crystal reacts to an external electric field. As the field strength increases, we find transitions from insulator (ionic state), to superionic (conductive state), to laning, to complete melting (liquid state). In the superionic state, the resistivity decreases with increasing temperature, which is contrary to metals, yet the increment decreases as the electric field becomes stronger. Additionally, we verify that the dissipation of the system and the fluctuation of charge currents obey recently developed thermodynamic uncertainty relation. Our results describe charge transport mechanisms in colloidal superionic conductors.
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spelling pubmed-101045622023-10-05 Colloidal superionic conductors Lin, Yange Olvera de la Cruz, Monica Proc Natl Acad Sci U S A Physical Sciences Nanoparticles with highly asymmetric sizes and charges that self-assemble into crystals via electrostatics may exhibit behaviors reminiscent of those of metals or superionic materials. Here, we use coarse-grained molecular simulations with underdamped Langevin dynamics to explore how a binary charged colloidal crystal reacts to an external electric field. As the field strength increases, we find transitions from insulator (ionic state), to superionic (conductive state), to laning, to complete melting (liquid state). In the superionic state, the resistivity decreases with increasing temperature, which is contrary to metals, yet the increment decreases as the electric field becomes stronger. Additionally, we verify that the dissipation of the system and the fluctuation of charge currents obey recently developed thermodynamic uncertainty relation. Our results describe charge transport mechanisms in colloidal superionic conductors. National Academy of Sciences 2023-04-05 2023-04-11 /pmc/articles/PMC10104562/ /pubmed/37018200 http://dx.doi.org/10.1073/pnas.2300257120 Text en Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) .
spellingShingle Physical Sciences
Lin, Yange
Olvera de la Cruz, Monica
Colloidal superionic conductors
title Colloidal superionic conductors
title_full Colloidal superionic conductors
title_fullStr Colloidal superionic conductors
title_full_unstemmed Colloidal superionic conductors
title_short Colloidal superionic conductors
title_sort colloidal superionic conductors
topic Physical Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10104562/
https://www.ncbi.nlm.nih.gov/pubmed/37018200
http://dx.doi.org/10.1073/pnas.2300257120
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