Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields

Abstract External fields are commonly applied to accelerate colloidal crystallization; however, accelerated self-assembly kinetics can negatively impact the quality of crystal structures. We show that cyclically applied electric fields can produce high quality colloidal crystals by annealing local d...

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Autores principales:	Peng-Kai Kao, Bryan J. VanSaders, Sharon C. Glotzer, Michael J. Solomon
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/759f090089d840979743fdc7ea5fc963
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spelling	oai:doaj.org-article:759f090089d840979743fdc7ea5fc9632021-12-02T15:00:19ZAccelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields10.1038/s41598-021-90310-72045-2322https://doaj.org/article/759f090089d840979743fdc7ea5fc9632021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90310-7https://doaj.org/toc/2045-2322Abstract External fields are commonly applied to accelerate colloidal crystallization; however, accelerated self-assembly kinetics can negatively impact the quality of crystal structures. We show that cyclically applied electric fields can produce high quality colloidal crystals by annealing local disorder. We find that the optimal off-duration for maximum annealing is approximately one-half of the characteristic melting half lifetime of the crystalline phase. Local six-fold bond orientational order grows more rapidly than global scattering peaks, indicating that local restructuring leads global annealing. Molecular dynamics simulations of cyclically activated systems show that the ratio of optimal off-duration for maximum annealing and crystal melting time is insensitive to particle interaction details. This research provides a quantitative relationship describing how the cyclic application of fields produces high quality colloidal crystals by cycling at the fundamental time scale for local defect rearrangements; such understanding of dynamics and kinetics can be applied for reconfigurable colloidal assembly.Peng-Kai KaoBryan J. VanSadersSharon C. GlotzerMichael J. SolomonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Peng-Kai Kao Bryan J. VanSaders Sharon C. Glotzer Michael J. Solomon Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
description	Abstract External fields are commonly applied to accelerate colloidal crystallization; however, accelerated self-assembly kinetics can negatively impact the quality of crystal structures. We show that cyclically applied electric fields can produce high quality colloidal crystals by annealing local disorder. We find that the optimal off-duration for maximum annealing is approximately one-half of the characteristic melting half lifetime of the crystalline phase. Local six-fold bond orientational order grows more rapidly than global scattering peaks, indicating that local restructuring leads global annealing. Molecular dynamics simulations of cyclically activated systems show that the ratio of optimal off-duration for maximum annealing and crystal melting time is insensitive to particle interaction details. This research provides a quantitative relationship describing how the cyclic application of fields produces high quality colloidal crystals by cycling at the fundamental time scale for local defect rearrangements; such understanding of dynamics and kinetics can be applied for reconfigurable colloidal assembly.
format	article
author	Peng-Kai Kao Bryan J. VanSaders Sharon C. Glotzer Michael J. Solomon
author_facet	Peng-Kai Kao Bryan J. VanSaders Sharon C. Glotzer Michael J. Solomon
author_sort	Peng-Kai Kao
title	Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
title_short	Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
title_full	Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
title_fullStr	Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
title_full_unstemmed	Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
title_sort	accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/759f090089d840979743fdc7ea5fc963
work_keys_str_mv	AT pengkaikao acceleratedannealingofcolloidalcrystalmonolayersbymeansofcyclicallyappliedelectricfields AT bryanjvansaders acceleratedannealingofcolloidalcrystalmonolayersbymeansofcyclicallyappliedelectricfields AT sharoncglotzer acceleratedannealingofcolloidalcrystalmonolayersbymeansofcyclicallyappliedelectricfields AT michaeljsolomon acceleratedannealingofcolloidalcrystalmonolayersbymeansofcyclicallyappliedelectricfields
_version_	1718389208726372352

Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields

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