Kinetics of orbitally shaken particles constrained to two dimensions
Dhananjay Ipparthi (Vrije Universiteit Brussel)
Tijmen A.G. Hageman (University of Twente, Saarland University)
Nicolas Cambier (EA 4297 TIMR UTC/ESCOM)
Metin Sitti (Max Planck Institute for Intelligent Systems)
Marco Dorigo (Vrije Universiteit Brussel)
Leon Abelmann (Saarland University, University of Twente)
Max Mastrangeli (Max Planck Institute for Intelligent Systems)
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Abstract
We present an experimental study of the kinetics of orbitally-shaken, sliding macroscopic particles confined to a two-dimensional space bounded by walls. Discounting the forcing action of the external periodic actuation, the particles undergo a qualitative transition from a ballistic to a diffusive motion regime with time. Despite the deterministic input of kinetic energy provided by the shaker, the particles show translational velocities and diffusivity consistent with a confined random walk model. Such experimental system may therefore represent a suitable macroscopic analog to investigate aspects of molecular dynamics and self-assembly.