Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session X39: Interfacial Phenomena II
8:00 AM–10:36 AM,
Tuesday, November 21, 2023
Room: 204B
Chair: Palas Kumar Farsoiya, Princeton University
Abstract: X39.00008 : Fast particle dispersion on air-water interface
9:31 AM–9:44 AM
Presenter:
Kha-I To
(Nonlinear and Non-equilibrium Physics Unit, Okinawa Institute of Science and Technology)
Authors:
Kha-I To
(Nonlinear and Non-equilibrium Physics Unit, Okinawa Institute of Science and Technology)
Rohit K Vishwakarma
(Nonlinear and Non-equilibrium Physics Unit, Okinawa Institute of Science and Technology)
Shreyas D Mandre
(Department of Engineering, University of Cambridge)
Mahesh M Bandi
(Nonlinear and Non-equilibrium Physics Unit, Okinawa Institute of Science and Technology)
One hypothesis is, the particles are spread radially outwards by capillary waves generated at the instant when the particles impact the water surface. However, this spreading is significantly suppressed with hydrophobic and clean (of impurities) hydrophilic particles, an empirical fact inexplicable by the capillary wave hypothesis. Our findings suggest a surfactant-driven mechanism contributes to this explosive particle dispersion on air-water interface.
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