Cargando…

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals

The complexity of shear-induced grain boundary dynamics has been historically difficult to view at the atomic scale. Meanwhile, two-dimensional (2D) colloidal crystals have gained prominence as model systems to easily explore grain boundary dynamics at single-particle resolution but have fallen shor...

Descripción completa

Detalles Bibliográficos
Autores principales: Lobmeyer, Dana M., Biswal, Sibani Lisa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9166398/
https://www.ncbi.nlm.nih.gov/pubmed/35658046
http://dx.doi.org/10.1126/sciadv.abn5715
_version_ 1784720594078531584
author Lobmeyer, Dana M.
Biswal, Sibani Lisa
author_facet Lobmeyer, Dana M.
Biswal, Sibani Lisa
author_sort Lobmeyer, Dana M.
collection PubMed
description The complexity of shear-induced grain boundary dynamics has been historically difficult to view at the atomic scale. Meanwhile, two-dimensional (2D) colloidal crystals have gained prominence as model systems to easily explore grain boundary dynamics at single-particle resolution but have fallen short at exploring these dynamics under shear. Here, we demonstrate how an inherent interfacial shear in 2D colloidal crystals drives microstructural evolution. By assembling paramagnetic particles into polycrystalline sheets using a rotating magnetic field, we generate a particle circulation at the interface of particle-free voids. This circulation shears the crystalline bulk, operating as both a source and sink for grain boundaries. Furthermore, we show that the Read-Shockley theory for hard-condensed matter predicts the misorientation angle and energy of shear-induced low-angle grain boundaries based on their regular defect spacing. Model systems containing shear provide an ideal platform to elucidate shear-induced grain boundary dynamics for use in engineering improved/advanced materials.
format Online
Article
Text
id pubmed-9166398
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher American Association for the Advancement of Science
record_format MEDLINE/PubMed
spelling pubmed-91663982022-06-17 Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals Lobmeyer, Dana M. Biswal, Sibani Lisa Sci Adv Physical and Materials Sciences The complexity of shear-induced grain boundary dynamics has been historically difficult to view at the atomic scale. Meanwhile, two-dimensional (2D) colloidal crystals have gained prominence as model systems to easily explore grain boundary dynamics at single-particle resolution but have fallen short at exploring these dynamics under shear. Here, we demonstrate how an inherent interfacial shear in 2D colloidal crystals drives microstructural evolution. By assembling paramagnetic particles into polycrystalline sheets using a rotating magnetic field, we generate a particle circulation at the interface of particle-free voids. This circulation shears the crystalline bulk, operating as both a source and sink for grain boundaries. Furthermore, we show that the Read-Shockley theory for hard-condensed matter predicts the misorientation angle and energy of shear-induced low-angle grain boundaries based on their regular defect spacing. Model systems containing shear provide an ideal platform to elucidate shear-induced grain boundary dynamics for use in engineering improved/advanced materials. American Association for the Advancement of Science 2022-06-03 /pmc/articles/PMC9166398/ /pubmed/35658046 http://dx.doi.org/10.1126/sciadv.abn5715 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Physical and Materials Sciences
Lobmeyer, Dana M.
Biswal, Sibani Lisa
Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title_full Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title_fullStr Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title_full_unstemmed Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title_short Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
title_sort grain boundary dynamics driven by magnetically induced circulation at the void interface of 2d colloidal crystals
topic Physical and Materials Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9166398/
https://www.ncbi.nlm.nih.gov/pubmed/35658046
http://dx.doi.org/10.1126/sciadv.abn5715
work_keys_str_mv AT lobmeyerdanam grainboundarydynamicsdrivenbymagneticallyinducedcirculationatthevoidinterfaceof2dcolloidalcrystals
AT biswalsibanilisa grainboundarydynamicsdrivenbymagneticallyinducedcirculationatthevoidinterfaceof2dcolloidalcrystals