Controllable Capillary Assembly of Magnetic Ellipsoidal Janus Particles into Tunable Rings, Chains and Hexagonal Lattices.
Janus particles
controllable assembly
ellipsoids
particle-laden fluid interfaces
Journal
Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Titre abrégé: Adv Mater
Pays: Germany
ID NLM: 9885358
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
18
09
2020
revised:
17
11
2020
pubmed:
16
1
2021
medline:
16
1
2021
entrez:
15
1
2021
Statut:
ppublish
Résumé
Colloidal assembly at fluid interfaces has a great potential for the bottom-up fabrication of novel structured materials. However, challenges remain in realizing controllable and tunable assembly of particles into diverse structures. Herein, the capillary assembly of magnetic ellipsoidal Janus particles at a fluid-fluid interface is reported. Depending on their tilt angle, that is, the angle the particle main axis forms with the fluid interface, these particles deform the interface and generate capillary dipoles or hexapoles. Driven by capillary interactions, multiple particles thus assemble into chain-, hexagonal-lattice-, and ring-like structures, which can be actively controlled by applying an external magnetic field. A field-strength phase diagram is predicted in which various structures are present as stable states. Owing to the diversity, controllability, and tunability of assembled structures, magnetic ellipsoidal Janus particles at fluid interfaces could therefore serve as versatile building blocks for novel materials.
Identifiants
pubmed: 33448100
doi: 10.1002/adma.202006390
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2006390Subventions
Organisme : Netherlands Organization for Scientific Research
Organisme : German Research Foundation
ID : HA 4382/11-1
Informations de copyright
© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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