2 papers
physics.app-ph2025
An elastodynamic Willis meta-slab with strong directional-dependent absorption
Philip A Cotterill, David Nigro, William J. Parnell
Electromagnetic bi-anisotropy finds an analogy in acoustic metamaterial science as Willis coupling. Its impact and emergence in the field of elastodynamic metamaterials is not as w…
physics.flu-dyn2022
Asymptotics of the meta-atom: plane wave scattering by a single Helmholtz resonator
M. J. A. Smith, P. A. Cotterill, D. Nigro +2
Using a combination of multipole methods and the method of matched asymptotics, we present a solution procedure for acoustic plane wave scattering by a single Helmholtz resonator i…