Tailored topological edge waves via chiral hierarchical metamaterials
File(s)PhysRevApplied.19.034079.pdf (6.54 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Precise manipulation of the direction and redirection of vibrational wave energy is a key demand in wave physics and engineering. We consider the paradigm of a finite framelike structure and the requirement to channel energy away from critical regions, leaving them vibration free, and redirect energy along edges toward energy concentrators for damping or energy harvesting. We design an exemplar frame metamaterial, combining two distinct areas of wave physics. First, we consider topological edge states, taking an unconventional tetrachiral lattice. We control these highly localized protected edge states leveraging a hierarchy of scales through the addition of microresonators that impose tunable symmetry breaking and reconfigurable mass. This allows us to achieve precise positional control in the macroscale frame lattice, thereby opening up opportunities for robust signal transport and vibration control. Experiments, theory, and simulation are all utilized to provide a comprehensive analysis and interpretation of the physics.
Date Acceptance
2023-02-23
Citation
Physical Review Applied, 19 (3), pp.1-9
ISSN
2331-7019
Publisher
American Physical Society
Start Page
1
End Page
9
Journal / Book Title
Physical Review Applied
Volume
19
Issue
3
Copyright Statement
© 2023 American Physical Society
Identifier
http://dx.doi.org/10.1103/physrevapplied.19.034079
Publication Status
Published
Article Number
034079
Date Publish Online
2023-03-24