Graded elastic meta-waveguides for rainbow reflection, trapping and mode conversion
Jacopo Maria De Ponti, Luca Iorio, Raffaele Ardito
Abstract
Precise control of elastic waves is a challenge for many applications in the field of mechanical vibrations, ultrasonic inspection, and energy harvesting. Graded arrays of resonators on elastic substrates recently revealed superior performances for broadband wave trapping and mode conversion. In this study we present elastic waveguides able to govern waves at different scales exploiting rainbow reflection, trapping and mode conversion. We investigate whether these mechanisms, and the associated control, can be used for energy harvesting or signal conversion devices.
Topics & Concepts
BroadbandReflection (computer programming)RainbowEnergy transformationOpticsResonatorMaterials scienceEnergy conversion efficiencyTrappingAcousticsMechanical energyVibrationElastic energyMode (computer interface)Lamb wavesUltrasonic sensorEnergy harvestingEnergy (signal processing)OptoelectronicsPhysicsWave propagationPower (physics)Computer scienceEcologyProgramming languageBiologyQuantum mechanicsThermodynamicsOperating systemAcoustic Wave Phenomena ResearchAcoustic Wave Resonator TechnologiesUltrasonics and Acoustic Wave Propagation