Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals
We discuss the various mechanisms involved in the spontaneous shrinkage of circular grain boundaries in two-dimensional colloidal crystals. We provide experimental evidence that these grain boundary loops shrink owing to three intermittent mechanisms proposed for atomic materials, namely purely curv...
| Autori principali: | , , , |
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| Natura: | Journal article |
| Pubblicazione: |
Springer Berlin Heidelberg
2019
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| _version_ | 1826306285674430464 |
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| author | Lavergne, FA Curran, A Aarts, DGA Dullens, R |
| author_facet | Lavergne, FA Curran, A Aarts, DGA Dullens, R |
| author_sort | Lavergne, FA |
| collection | OXFORD |
| description | We discuss the various mechanisms involved in the spontaneous shrinkage of circular grain boundaries in two-dimensional colloidal crystals. We provide experimental evidence that these grain boundary loops shrink owing to three intermittent mechanisms proposed for atomic materials, namely purely curvature-driven migration, coupled grain boundary migration, and grain boundary sliding. Throughout shrinkage, the product of the radius and misorientation of the grain boundary loop remains higher than a fundamental limit resulting from the specific dislocation structure of grain boundary loops, except for the very last stage where the loop character is lost. Despite its complexity, this process can be effectively described by a single kinetic coefficient, allowing for a simplified description of grain boundary loop kinetics. |
| first_indexed | 2024-03-07T06:45:39Z |
| format | Journal article |
| id | oxford-uuid:fac2a496-086c-46ca-a54c-251e823ff35e |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:45:39Z |
| publishDate | 2019 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | oxford-uuid:fac2a496-086c-46ca-a54c-251e823ff35e2022-03-27T13:08:40ZShrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystalsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fac2a496-086c-46ca-a54c-251e823ff35eSymplectic Elements at OxfordSpringer Berlin Heidelberg2019Lavergne, FACurran, AAarts, DGADullens, RWe discuss the various mechanisms involved in the spontaneous shrinkage of circular grain boundaries in two-dimensional colloidal crystals. We provide experimental evidence that these grain boundary loops shrink owing to three intermittent mechanisms proposed for atomic materials, namely purely curvature-driven migration, coupled grain boundary migration, and grain boundary sliding. Throughout shrinkage, the product of the radius and misorientation of the grain boundary loop remains higher than a fundamental limit resulting from the specific dislocation structure of grain boundary loops, except for the very last stage where the loop character is lost. Despite its complexity, this process can be effectively described by a single kinetic coefficient, allowing for a simplified description of grain boundary loop kinetics. |
| spellingShingle | Lavergne, FA Curran, A Aarts, DGA Dullens, R Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title | Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title_full | Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title_fullStr | Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title_full_unstemmed | Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title_short | Shrinkage mechanisms of grain boundary loops in two-dimensional colloidal crystals |
| title_sort | shrinkage mechanisms of grain boundary loops in two dimensional colloidal crystals |
| work_keys_str_mv | AT lavergnefa shrinkagemechanismsofgrainboundaryloopsintwodimensionalcolloidalcrystals AT currana shrinkagemechanismsofgrainboundaryloopsintwodimensionalcolloidalcrystals AT aartsdga shrinkagemechanismsofgrainboundaryloopsintwodimensionalcolloidalcrystals AT dullensr shrinkagemechanismsofgrainboundaryloopsintwodimensionalcolloidalcrystals |