Measuring monopole and dipole polarizability of acoustic meta-atoms

Jordaan, J; Punzet, S; Melnikov, A; Sanches, A; Oberst, S; Marburg, S; Powell, DA

Measuring monopole and dipole polarizability of acoustic meta-atoms

Jordaan, J Punzet, S Melnikov, A

Sanches, A Oberst, S

Marburg, S Powell, DA

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Publication Type:: Journal Article
Citation:: Applied Physics Letters, 2018, 113 (22)
Issue Date:: 2018-11-26

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Field	Value	Language
dc.contributor.author	Jordaan, J	en_US
dc.contributor.author	Punzet, S	en_US
dc.contributor.author	Melnikov, A https://orcid.org/0000-0001-9466-653X	en_US
dc.contributor.author	Sanches, A	en_US
dc.contributor.author	Oberst, S https://orcid.org/0000-0002-1388-2749	en_US
dc.contributor.author	Marburg, S	en_US
dc.contributor.author	Powell, DA	en_US
dc.date.available	2020-05-25T19:07:47Z
dc.date.issued	2018-11-26	en_US
dc.identifier.citation	Applied Physics Letters, 2018, 113 (22)	en_US
dc.identifier.issn	0003-6951	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131107
dc.description.abstract	© 2018 Author(s). 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. However, those with longer path lengths suffer strong additional damping, which we attribute to the strong viscous and thermal losses in narrow channels.	en_US
dc.relation.ispartof	Applied Physics Letters	en_US
dc.relation.isbasedon	10.1063/1.5052661	en_US
dc.subject.classification	Applied Physics	en_US
dc.title	Measuring monopole and dipole polarizability of acoustic meta-atoms	en_US
dc.type	Journal Article
utslib.citation.volume	22	en_US
utslib.citation.volume	113	en_US
utslib.for	0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	10 Technology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	open_access
pubs.issue	22	en_US
pubs.publication-status	Published	en_US
pubs.volume	113	en_US

Abstract:

© 2018 Author(s). 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. However, those with longer path lengths suffer strong additional damping, which we attribute to the strong viscous and thermal losses in narrow channels.

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http://hdl.handle.net/10453/131107