Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase

Self-assembly of microscopic building blocks into highly ordered and functional structures is ubiquitous in nature and found at all length scales. Hierarchical structures formed by colloidal building blocks are typically assembled from monodisperse particles interacting via engineered directional in...

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Main Authors: Fernández-Rico, C, Dullens, RPA
Format: Journal article
Language:English
Published: National Academy of Sciences 2021
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author Fernández-Rico, C
Dullens, RPA
author_facet Fernández-Rico, C
Dullens, RPA
author_sort Fernández-Rico, C
collection OXFORD
description Self-assembly of microscopic building blocks into highly ordered and functional structures is ubiquitous in nature and found at all length scales. Hierarchical structures formed by colloidal building blocks are typically assembled from monodisperse particles interacting via engineered directional interactions. Here, we show that polydisperse colloidal bananas self-assemble into a complex and hierarchical quasi–two-dimensional structure, called the vortex phase, only due to excluded volume interactions and polydispersity in the particle curvature. Using confocal microscopy, we uncover the remarkable formation mechanism of the vortex phase and characterize its exotic structure and dynamics at the single-particle level. These results demonstrate that hierarchical self-assembly of complex materials can be solely driven by entropy and shape polydispersity of the constituting particles.
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spelling oxford-uuid:9932c5b0-213f-4f15-b824-ddee12cced522022-03-27T00:12:29ZHierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phaseJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9932c5b0-213f-4f15-b824-ddee12cced52EnglishSymplectic ElementsNational Academy of Sciences2021Fernández-Rico, CDullens, RPASelf-assembly of microscopic building blocks into highly ordered and functional structures is ubiquitous in nature and found at all length scales. Hierarchical structures formed by colloidal building blocks are typically assembled from monodisperse particles interacting via engineered directional interactions. Here, we show that polydisperse colloidal bananas self-assemble into a complex and hierarchical quasi–two-dimensional structure, called the vortex phase, only due to excluded volume interactions and polydispersity in the particle curvature. Using confocal microscopy, we uncover the remarkable formation mechanism of the vortex phase and characterize its exotic structure and dynamics at the single-particle level. These results demonstrate that hierarchical self-assembly of complex materials can be solely driven by entropy and shape polydispersity of the constituting particles.
spellingShingle Fernández-Rico, C
Dullens, RPA
Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title_full Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title_fullStr Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title_full_unstemmed Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title_short Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase
title_sort hierarchical self assembly of polydisperse colloidal bananas into a two dimensional vortex phase
work_keys_str_mv AT fernandezricoc hierarchicalselfassemblyofpolydispersecolloidalbananasintoatwodimensionalvortexphase
AT dullensrpa hierarchicalselfassemblyofpolydispersecolloidalbananasintoatwodimensionalvortexphase