High-Acceleration Patterns in Thin Vibrated Granular Layers

TL;DR

This paper combines theoretical modeling and experimental validation to explore high-acceleration patterns in vibrated granular layers, revealing new localized excitations called super-oscillons and their controlled dynamics.

Contribution

It introduces an order parameter model based on the Ginzburg-Landau equation to describe nonlinear excitations and experimentally confirms the existence and controllable motion of super-oscillons.

Findings

Confirmed existence of super-oscillons and their bound states.

Demonstrated controlled interface motion via subharmonic driving.

Developed a predictive analytical model validated by experiments.

Abstract

Theoretical and experimental study of high-acceleration patterns in vibrated granular layers is presented. The order parameter model based on parametric Ginzburg-Landau equation is used to describe strongly nonlinear excitations including hexagons, interface between flat anti-phase domains and new localized objects, super-oscillons. The experiments confirmed the existence of super-oscillons and bound states of super-oscillons and interfaces. On the basis of order parameter model we predict analytically and confirm experimentally that the additional subharmonic driving results in controlled motion of the interfaces.