Topological rainbow trapping for elastic energy harvesting in graded Su-Schrieffer-Heeger systems
File(s)
Accepted version
Author(s)
Chaplain, Gregory J
Ponti, Jacopo M De
Aguzzi, Giulia
Colombi, Andrea
Craster, Richard V
Type
Journal Article
Abstract
We amalgamate two fundamental designs from distinct areas of wave control in physics, and place them in the setting of elasticity. Graded elastic metasurfaces, so-called metawedges, are combined with the now classical Su-Schrieffer-Heeger (SSH) model from the field of topological insulators. The resulting structures form one-dimensional graded-SSH-metawedges that support multiple, simultaneous, topologically protected edge states. These robust, enhanced localised modes are leveraged for applications in elastic energy harvesting using the piezoelectric effect. The designs we develop are first motivated by applying the SSH model to mass-loaded Kirchhoff-Love thin elastic plates. We then extend these ideas to using graded resonant rods, and create SSH models, coupled to elastic beams and full elastic half-spaces.
Date Issued
2020-11-16
Date Acceptance
2020-10-14
Citation
Applied Physics Letters, 2020, 14, pp.054035 – 1-054035 – 15
ISSN
0003-6951
Publisher
American Institute of Physics
Start Page
054035 – 1
End Page
054035 – 15
Journal / Book Title
Applied Physics Letters
Volume
14
Copyright Statement
© 2020 American Physical Society
Identifier
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.14.054035
Subjects
physics.app-ph
physics.app-ph
physics.class-ph
Publication Status
Published
Date Publish Online
2020-11-16