Graded elastic meta-waveguides for rainbow reflection, trapping and mode conversion

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 thi...

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Bibliographic Details
Published inEPJ applied metamaterials Vol. 9; p. 6
Main Authors De Ponti, Jacopo Maria, Iorio, Luca, Ardito, Raffaele
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences 2022
Subjects
Acoustics
Arrays
Broadband
Conversion
Elastic waves
Electromagnetism
Energy harvesting
graded resonators
Inspection
meta-waveguides
Propagation
rainbow effect
Rainbows
Substrates
Symmetry
Trapping
Ultrasonic testing
Velocity
Wave reflection
Waveguides
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Summary: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.
ISSN:2272-2394
2272-2394
DOI:10.1051/epjam/2022004