8–13 Jun 2025
America/Winnipeg timezone
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Capillary-Driven Coalescence of Bidisperse Particle Rafts with Tunable Cohesion

10 Jun 2025, 11:15
15m
Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) (DCMMP) T1-4 Quantum and Soft Materials | Matériaux quantiques et mous (DPMCM)

Speaker

Cameron Burns (McMaster Univ.)

Description

The coalescence of liquid drops is a well-studied and ubiquitous natural phenomenon central to many industrial processes. We study the physics of a granular analogue of this process through the coalescence of particle rafts in which individual particle rearrangements can be directly observed. In the experiments, a pair of two-dimensional bidisperse rafts of microscopic oil droplets are released and coalesce, driven by capillary forces. A tunable cohesive force between particles mediates the large-scale relaxation of the structure. Varying the strength of cohesion, we investigate the geometry and dynamics of this raft coalescence process.

Keyword-1 Coalescence
Keyword-2 Granular Physics
Keyword-3 Particle Rafts

Author

Cameron Burns (McMaster Univ.)

Co-authors

Johnathan Hoggarth Prof. Kari Dalnoki-Veress (McMaster University)

Presentation materials

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