Graded quasiperiodic metamaterials perform fractal rainbow trapping
File(s)
Published version
Author(s)
Davies, B
Chaplain, GJ
Starkey, TA
Craster, RV
Type
Journal Article
Abstract
The rainbow trapping phenomenon of graded metamaterials can be combined with the fractal spectra of quasiperiodic waveguides to give a metamaterial that performs fractal rainbow trapping. This is achieved through a graded cut-and-project algorithm that yields a geometry for which the effective projection angle is graded along its length. As a result, the fractal structure of local band gaps varies with position, leading to broadband "fractal" rainbow trapping. We demonstrate this principle by designing an acoustic waveguide, which is characterised using theory, simulation and experiments.
Date Issued
2023-10-27
Date Acceptance
2023-09-27
Citation
Physical Review Letters, 2023, 131 (17)
ISSN
0031-9007
Publisher
American Physical Society
Journal / Book Title
Physical Review Letters
Volume
131
Issue
17
Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/37955468
Publication Status
Published
Coverage Spatial
United States
Article Number
177001
Date Publish Online
2023-10-23