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Measuring monopole and dipole polarizability of acoustic meta-atoms

Jordaan, Joshua; Punzet, Stefan; Melnikov, Anton; Sanches, Alexandre; Oberst, Sebastian; Marburg, Steffen; Powell, David Anthony


We present a method to extract monopole and dipole polarizability from experimental measurements of two-dimensional acoustic meta-atoms. In contrast to extraction from numerical results, this enables all second-order effects and uncertainties in material properties to be accounted for. We apply the technique to 3D-printed labyrinthine meta-atoms of a variety of geometries. We show that the polarizability of structures with a shorter acoustic path length agrees well with numerical results....[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.5052661
Access Rights: Open Access


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