567 citations · 1.9k across the 36 of their papers we have counts for
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Metaclusters for the Full Control of Mechanical Waves
Pawel Packo, Andrew Norris, Dani Torrent
We present a new method for the control of waves based on inverse multiple scattering theory. Conceived as a generalization of the concept of metagrating, we call metaclusters to a…
Experimental Realization of Acoustic Bianisotropic Gratings
Steven R. Craig, Xiaoshi Su, Andrew N. Norris +1
Acoustic bianisotropic materials couple pressure and local particle velocity fields to simultaneously excite monopole and dipole scattering, which results in asymmetric wave transm…
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…
Elastic metasurfaces for splitting SV- and P-waves in elastic solids
Xiaoshi Su, Zhaocheng Lu, Andrew N. Norris
Although recent advances have made it possible to manipulate electromagnetic and acoustic wavefronts with sub-wavelength metasurface slabs, the design of elastodynamic counterparts…
Loss Compensation in Time-Dependent Elastic Metamaterials
Daniel Torrent, William J. Parnell, Andrew N. Norris
Materials with properties that are modulated in time are known to display wave phenomena showing energy increasing with time, with the rate mediated by the modulation. Until now th…