567 citations · 1.9k across the 36 of their papers we have counts for
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Acoustic scattering from a fluid cylinder with Willis constitutive properties
Michael B. Muhlestein, Benjamin M. Goldsberry, Andrew N. Norris +1
A material that exhibits Willis coupling has constitutive equations that couple the pressure-strain and momentum-velocity relationships. This coupling arises from subwavelength asy…
Retrieval method for the bianisotropic polarizability tensor of Willis acoustic scatterers
Xiaoshi Su, Andrew N. Norris
Acoustic materials displaying coupling between pressure and momentum are known as Willis materials. The simplest Willis materials are comprised of sub-wavelength scatterers that co…
The Inverse Grating Problem: Efficient Design of Anomalous Flexural Wave Reflectors and Refractors
Pawel Packo, Andrew N. Norris, Daniel Torrent
We present an extensive formulation of the inverse grating problem for exural waves, in which the energy of each diffracted mode is selected and the grating configuration is then o…
Integral identities for reflection, transmission and scattering coefficients
Andrew N. Norris
Several integral identities related to acoustic scattering are presented. In each case the identity involves the integral over frequency of a physical quantity. For instance, the i…
Elastic quantum spin-Hall effect in Kagome lattices
Hui Chen, Hussein Nassar, Andrew N. Norris +2
A Quantum Spin-Hall Insulator (QSHI) is implemented into a simple mass-spring Kagome lattice. The transition from the trivial state to the topological one is described by an invari…