Graded quasiperiodic metamaterials perform fractal rainbow trapping
arXiv:2305.10520 · doi:10.1103/PhysRevLett.131.177001
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 projected 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.
References in corpus (5)
- Complete Band Gaps in 2D Photonic Quasicrystals
- A Graded Metamaterial for Broadband and High-capability Piezoelectric Energy Harvesting
- Computation and visualization of photonic quasicrystal spectra via Blochs theorem
- Scatterer induced mode splitting in poly(dimethylsiloxane) coated microresonators
- Optimised graded metamaterials for mechanical energy confinement and amplification via reinforcement learning