Self-Organization of Binary Colloidal Mixtures via Diffusiophoresis.
Brownian dynamics
active colloids
diffusiophoresis
nonreciprocal interaction
self-assembly
Journal
Frontiers in chemistry
ISSN: 2296-2646
Titre abrégé: Front Chem
Pays: Switzerland
ID NLM: 101627988
Informations de publication
Date de publication:
2022
2022
Historique:
received:
28
10
2021
accepted:
02
02
2022
entrez:
1
4
2022
pubmed:
2
4
2022
medline:
2
4
2022
Statut:
epublish
Résumé
Catalytic activity of the colloids and chemotactic response to gradients of the chemicals in the solution leads to effective interaction between catalytic colloids. In this paper, we simulate mixtures of active and passive colloids via a Brownian dynamics algorithm. These particles interact via phoretic interactions, which are determined by two independent parameters, surface activity and surface mobility. We find rich dynamic structures by tuning passive colloids' surface mobility, size, and area fractions, which include schools of active colloids with exclusion zone, yolk/shell cluster, and stable active-passive alloys to motile clusters. Dynamical cluster can also be formed due to the nonreciprocity of the phoretic interaction. Increasing the size ratio of passive colloids to active colloids favors the phase separation of active and passive colloids, resulting in yolk/shell structure. Increasing the area fraction of active colloids tends to transfer from dynamical clusters into stable alloys. The simulated binary active colloid systems exhibit intriguing nonequilibrium phenomena that mimic the dynamic organizations of active/passive systems.
Identifiants
pubmed: 35360529
doi: 10.3389/fchem.2022.803906
pii: 803906
pmc: PMC8960120
doi:
Types de publication
Journal Article
Langues
eng
Pagination
803906Commentaires et corrections
Type : ErratumIn
Informations de copyright
Copyright © 2022 Lei, Wang, Zhou, Ghellab, Lin and Gao.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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