Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres

Hierarchical self-assembly consisting of local associations of simple building blocks for the formation of complex structures widely exists in nature, while the essential role of local assembly remains unknown. In this work, by using computer simulations, we study a simple model system consisting of...

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Main Authors: Lei, Qun-li, Hadinoto, Kunn, Ni, Ran
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/102281
http://hdl.handle.net/10220/48591
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1022812023-12-29T06:46:20Z Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres Lei, Qun-li Hadinoto, Kunn Ni, Ran School of Chemical and Biomedical Engineering Crystallization Excluded Volume Interaction DRNTU::Engineering::Chemical engineering Hierarchical self-assembly consisting of local associations of simple building blocks for the formation of complex structures widely exists in nature, while the essential role of local assembly remains unknown. In this work, by using computer simulations, we study a simple model system consisting of associating colloidal hemispheres crystallizing into face-centered-cubic crystals comprised of spherical dimers of hemispheres, focusing on the effect of dimer formation on the hierarchical crystallization. We found that besides assisting the crystal nucleation because of increasing the symmetry of building blocks, the association between hemispheres can also induce both reentrant melting and reentrant crystallization depending on the range of interaction. Especially when the interaction is highly sticky, we observe a novel reentrant crystallization of identical crystals, which melt only in a certain temperature range. This offers another axis in fabricating responsive crystalline materials by tuning the fluctuation of local association. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Published version 2019-06-07T02:02:10Z 2019-12-06T20:52:37Z 2019-06-07T02:02:10Z 2019-12-06T20:52:37Z 2017 Journal Article Lei, Q., Hadinoto, K., & Ni, R. (2017). Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres. Physical Review Materials, 1(5), 052601(R)-. doi:10.1103/PhysRevMaterials.1.052601 https://hdl.handle.net/10356/102281 http://hdl.handle.net/10220/48591 10.1103/PhysRevMaterials.1.052601 en Physical Review Materials © 2017 American Physical Society. All rights reserved. This paper was published in Physical Review Materials and is made available with permission of American Physical Society. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Crystallization
Excluded Volume Interaction
DRNTU::Engineering::Chemical engineering
spellingShingle Crystallization
Excluded Volume Interaction
DRNTU::Engineering::Chemical engineering
Lei, Qun-li
Hadinoto, Kunn
Ni, Ran
Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
description Hierarchical self-assembly consisting of local associations of simple building blocks for the formation of complex structures widely exists in nature, while the essential role of local assembly remains unknown. In this work, by using computer simulations, we study a simple model system consisting of associating colloidal hemispheres crystallizing into face-centered-cubic crystals comprised of spherical dimers of hemispheres, focusing on the effect of dimer formation on the hierarchical crystallization. We found that besides assisting the crystal nucleation because of increasing the symmetry of building blocks, the association between hemispheres can also induce both reentrant melting and reentrant crystallization depending on the range of interaction. Especially when the interaction is highly sticky, we observe a novel reentrant crystallization of identical crystals, which melt only in a certain temperature range. This offers another axis in fabricating responsive crystalline materials by tuning the fluctuation of local association.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Lei, Qun-li
Hadinoto, Kunn
Ni, Ran
format Article
author Lei, Qun-li
Hadinoto, Kunn
Ni, Ran
author_sort Lei, Qun-li
title Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
title_short Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
title_full Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
title_fullStr Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
title_full_unstemmed Role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
title_sort role of local assembly in the hierarchical crystallization of associating colloidal hard hemispheres
publishDate 2019
url https://hdl.handle.net/10356/102281
http://hdl.handle.net/10220/48591
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