Article
Colloidal interactions and unusual crystallization versus de-mixing of elastic multipoles formed by gold mesoflowers Public Deposited
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Colloidal interactions in nematic liquid crystals can be described as interactions between
elastic multipoles that depend on particle shape, topology, chirality, boundary conditions and
induced topological defects. Here, we describe a nematic colloidal system consisting of
mesostructures of gold capable of inducing elastic multipoles of different order. Elastic
monopoles are formed by relatively large asymmetric mesoflower particles, for which gravity
and elastic torque balancing yields monopole-type interactions. High-order multipoles are
instead formed by smaller mesoflowers with a myriad of shapes corresponding to multipoles
of different orders, consistent with our computer simulations based on free energy minimization.
We reveal unexpected many-body interactions in this colloidal system, ranging
from de-mixing of elastic monopoles to a zoo of unusual colloidal crystals formed by highorder
multipoles like hexadecapoles. Our findings show that gold mesoflowers may serve as a
designer toolkit for engineering colloidal interaction and self-assembly, potentially exceeding
that in atomic and molecular systems.
- Creator
- Date Issued
- 2020-01-10
- Academic Affiliation
- Journal Title
- Journal Volume
- 11
- Dernière modification
- 2020-01-15
- Resource Type
- Déclaration de droits
- DOI
- Peer Reviewed
- ISSN
- 2041-1723
- Language
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