Speaker
Malte Peter
(University of Augsburg)
Description
The term rainbow trapping commonly refers to using graded arrays for amplification of waves at chosen locations according to frequency. In the context of wave-energy harvesting, Chaplain et al. (NewJ. Phys. 22:063024, 2020) showed the benefits of grading such that amplifications are associated to bandcrossings within Brillouin zones rather than at their edges, referring to the latter as rainbow reflection todistinguish it from the rarer trapping cases. Here, we revisit the differences between rainbow trapping andreflection using the concepts of Rayleigh–Bloch waves and transfer matrices.
Authors
Malte Peter
(University of Augsburg)
Luke Bennetts
(University of Melbourne)
Gregory Chaplain
(University of Exeter)
Stuart Hawkins
(Macquarie University)