Reconfigurable Elastic Metamaterials: Engineering Dispersion with Beyond Nearest Neighbors
G. J. Chaplain, Ian R. Hooper, Alastair P. Hibbins, Timothy A. Starkey
Abstract
We design, simulate, and experimentally characterize a reconfigurable elastic metamaterial with beyond-nearest-neighbor (BNN) coupling. The structure is composed from the popular British model-construction system Meccano and supports backward waves with opposite directions of phase and group velocities. We experimentally verify three distinct configurations and acoustically infer their spatial vibration spectra.
Topics & Concepts
Metamaterialk-nearest neighbors algorithmDispersion (optics)Coupling (piping)VibrationPhase (matter)Computer sciencePhysicsAcousticsOpticsMaterials scienceArtificial intelligenceQuantum mechanicsComposite materialAcoustic Wave Phenomena ResearchMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies