Observations of symmetry-induced topological mode steering in a reconfigurable elastic plate
Kun Tang, Mehul P. Makwana, Richard V. Craster, Patrick Sebbah
Abstract
We experimentally investigate the valley-Hall effect for interfacial edge states, highlighting the importance of the modal patterns between geometrically distinct regions within a structured elastic plate. These experiments, for vibration, are at a scale where detailed measurements are taken throughout the system and not just at the input/output ports; this exposes the coupling between geometrically distinct modes that underlie the differences between wave transport around gentle and sharp bends.
Topics & Concepts
Symmetry (geometry)VibrationModalCoupling (piping)Mode (computer interface)Enhanced Data Rates for GSM EvolutionPhysicsTopology (electrical circuits)GeometryMaterials scienceAcousticsEngineeringComputer scienceTelecommunicationsMathematicsElectrical engineeringMechanical engineeringPolymer chemistryOperating systemTopological Materials and PhenomenaMechanical and Optical ResonatorsRandom lasers and scattering media