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Depletion-induced crystallization of anisotropic triblock colloids

Camerin, Fabrizio LU orcid ; Marín-Aguilar, Susana and Dijkstra, Marjolein (2024) In Nanoscale
Abstract

The intricate interplay between colloidal particle shape and precisely engineered interaction potentials has paved the way for the discovery of unprecedented crystal structures in both two and three dimensions. Here, we make use of anisotropic triblock colloidal particles composed of two distinct materials. The resulting surface charge heterogeneity can be exploited to generate regioselective depletion interactions and directional bonding. Using extensive molecular dynamics simulations and a dimensionality reduction analysis approach, we map out state diagrams for the self-assembly of such colloids as a function of their aspect ratio and for varying depletant features in a quasi two-dimensional set-up. We observe the formation of a wide... (More)

The intricate interplay between colloidal particle shape and precisely engineered interaction potentials has paved the way for the discovery of unprecedented crystal structures in both two and three dimensions. Here, we make use of anisotropic triblock colloidal particles composed of two distinct materials. The resulting surface charge heterogeneity can be exploited to generate regioselective depletion interactions and directional bonding. Using extensive molecular dynamics simulations and a dimensionality reduction analysis approach, we map out state diagrams for the self-assembly of such colloids as a function of their aspect ratio and for varying depletant features in a quasi two-dimensional set-up. We observe the formation of a wide variety of crystal structures such as a herringbone, brick-wall, tilted brick-wall, and (tilted) ladder-like structures. More specifically, we determine the optimal parameters to enhance crystallization, and investigate the nucleation process. Additionally, we explore the potential of using crystalline monolayers as templates for deposition, thereby creating complex three-dimensional structures that hold promise for future applications.

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Please use this url to cite or link to this publication:
author
; and
publishing date
type
Contribution to journal
publication status
epub
in
Nanoscale
publisher
Royal Society of Chemistry
external identifiers
  • pmid:38289471
  • scopus:85183985878
ISSN
2040-3364
DOI
10.1039/d3nr04816k
language
English
LU publication?
no
additional info
Publisher Copyright: © 2024 The Royal Society of Chemistry.
id
07f87cd6-e462-40ab-86ee-9500fe19983e
date added to LUP
2024-02-22 13:43:14
date last changed
2024-04-21 23:41:17
@article{07f87cd6-e462-40ab-86ee-9500fe19983e,
  abstract     = {{<p>The intricate interplay between colloidal particle shape and precisely engineered interaction potentials has paved the way for the discovery of unprecedented crystal structures in both two and three dimensions. Here, we make use of anisotropic triblock colloidal particles composed of two distinct materials. The resulting surface charge heterogeneity can be exploited to generate regioselective depletion interactions and directional bonding. Using extensive molecular dynamics simulations and a dimensionality reduction analysis approach, we map out state diagrams for the self-assembly of such colloids as a function of their aspect ratio and for varying depletant features in a quasi two-dimensional set-up. We observe the formation of a wide variety of crystal structures such as a herringbone, brick-wall, tilted brick-wall, and (tilted) ladder-like structures. More specifically, we determine the optimal parameters to enhance crystallization, and investigate the nucleation process. Additionally, we explore the potential of using crystalline monolayers as templates for deposition, thereby creating complex three-dimensional structures that hold promise for future applications.</p>}},
  author       = {{Camerin, Fabrizio and Marín-Aguilar, Susana and Dijkstra, Marjolein}},
  issn         = {{2040-3364}},
  language     = {{eng}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Nanoscale}},
  title        = {{Depletion-induced crystallization of anisotropic triblock colloids}},
  url          = {{http://dx.doi.org/10.1039/d3nr04816k}},
  doi          = {{10.1039/d3nr04816k}},
  year         = {{2024}},
}