Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session G13: Drop Interactions
10:35 AM–12:45 PM,
Monday, November 19, 2018
Georgia World Congress Center Room: B218
Chair: Michael Rother, University of Minnesota, Duluth
Abstract ID: BAPS.2018.DFD.G13.2
Abstract: G13.00002 : Spin lattices of walking droplets*
10:48 AM–11:01 AM
Pedro J Saenz
Pedro J Saenz
Rodolfo R Rosales
We present experiments that demonstrate the spontaneous emergence of collective behavior in spin lattices of droplets walking on a vibrating fluid surface. Circular wells at the bottom of the fluid bath encourage individual droplets to walk in clockwise or counter-clockwise direction along circular trajectories centered at the lattice sites. A thin fluid layer between the wells enables wave-mediated interactions between neighboring walkers resulting in coherent rotation dynamics across the lattice. When the pair-coupling is sufficiently strong, interactions between neighboring droplets may induce local spin flips leading to ferromagnetic or anti-ferromagnetic order. Results for different lattice geometries are discussed.
*This work was supported by the US National Science Foundation through grants CMMI-1727565 and DMS-1614043.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.G13.2
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