Hydrodynamic effects on the liquid-hexatic transition of active colloids.
Journal
The European physical journal. E, Soft matter
ISSN: 1292-895X
Titre abrégé: Eur Phys J E Soft Matter
Pays: France
ID NLM: 101126530
Informations de publication
Date de publication:
13 Sep 2022
13 Sep 2022
Historique:
received:
25
01
2022
accepted:
25
08
2022
entrez:
13
9
2022
pubmed:
14
9
2022
medline:
16
9
2022
Statut:
epublish
Résumé
We study numerically the role of hydrodynamics in the liquid-hexatic transition of active colloids at intermediate activity, where motility induced phase separation (MIPS) does not occur. We show that in the case of active Brownian particles (ABP), the critical density of the transition decreases upon increasing the particle's mass, enhancing ordering, while self-propulsion has the opposite effect in the activity regime considered. Active hydrodynamic particles (AHP), instead, undergo the liquid-hexatic transition at higher values of packing fraction [Formula: see text] than the corresponding ABP, suggesting that hydrodynamics have the net effect of disordering the system. At increasing densities, close to the hexatic-liquid transition, we found in the case of AHP the appearance of self-sustained organized motion with clusters of particles moving coherently.
Identifiants
pubmed: 36098879
doi: 10.1140/epje/s10189-022-00230-1
pii: 10.1140/epje/s10189-022-00230-1
pmc: PMC9470657
doi:
Substances chimiques
Colloids
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
75Informations de copyright
© 2022. The Author(s).
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