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

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dc.citation.articleNumbereabn5715
dc.citation.issueNumber22
dc.citation.journalTitleScience Advances
dc.citation.volumeNumber8
dc.contributor.authorLobmeyer, Dana M.
dc.contributor.authorBiswal, Sibani Lisa
dc.date.accessioned2022-07-06T18:09:19Z
dc.date.available2022-07-06T18:09:19Z
dc.date.issued2022
dc.description.abstractThe 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.
dc.identifier.citationLobmeyer, Dana M. and Biswal, Sibani Lisa. "Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals." <i>Science Advances,</i> 8, no. 22 (2022) AAAS: https://doi.org/10.1126/sciadv.abn5715.
dc.identifier.digitalsciadv-abn5715
dc.identifier.doihttps://doi.org/10.1126/sciadv.abn5715
dc.identifier.urihttps://hdl.handle.net/1911/112683
dc.language.isoeng
dc.publisherAAAS
dc.rightsDistributed under a Creative Commons Attribution License 4.0 (CC BY).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleGrain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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