Laser-Induced Dewetting for Precise Local Generation of Au Nanostructures for Tunable Solar Absorption

Berean, KJ; Sivan, V; Khodasevych, I; Boes, A; Della Gaspera, E; Field, MR; Kalantar-Zadeh, K; Mitchell, A; Rosengarten, G

Laser-Induced Dewetting for Precise Local Generation of Au Nanostructures for Tunable Solar Absorption

Berean, KJ Sivan, V Khodasevych, I

Boes, A Della Gaspera, E Field, MR Kalantar-Zadeh, K Mitchell, A Rosengarten, G

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Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Advanced Optical Materials, 2016, 4, (8), pp. 1247-1254
Issue Date:: 2016-08-01

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Field	Value	Language
dc.contributor.author	Berean, KJ
dc.contributor.author	Sivan, V
dc.contributor.author	Khodasevych, I https://orcid.org/0000-0001-7901-0217
dc.contributor.author	Boes, A
dc.contributor.author	Della Gaspera, E
dc.contributor.author	Field, MR
dc.contributor.author	Kalantar-Zadeh, K
dc.contributor.author	Mitchell, A
dc.contributor.author	Rosengarten, G
dc.date.accessioned	2022-02-28T00:15:03Z
dc.date.available	2022-02-28T00:15:03Z
dc.date.issued	2016-08-01
dc.identifier.citation	Advanced Optical Materials, 2016, 4, (8), pp. 1247-1254
dc.identifier.issn	2195-1071
dc.identifier.issn	2195-1071
dc.identifier.uri	http://hdl.handle.net/10453/154903
dc.description.abstract	A precise and scalable method is introduced for realizing deeply subwavelength nanostructures through laser-induced dewetting. This fabrication method is used to realize a three layer planar absorber device that allows for highly tunable selective visible–IR light absorption. This large area laser dewetting method uses a 532 nm laser with a μm ranged focal spot on a translation stage allowing for fine pattern control. A range of laser powers from 60 to 130 mW is explored and it is found that three dramatically different structures, all aperiodic and random in nature are developed. An interconnected metallic nanowire network, partially connected nanowire networks, and spherical or elliptically shaped nanoparticles are observed for low, intermediate, and high laser powers, respectively. Optical absorptance spectra demonstrate a noticeable variation in response to the structures formed. A tunable absorption in the visible range is demonstrated and the partially connected nanowires show the greatest enhancement in broadband absorption compared to the other structures. Finite element simulations uncover plasmonic and magnetic resonances as the underlying mechanisms for the absorbing behavior. This high degree of control over the dewetting area makes this technique a suitable candidate for many photonic and solar applications allowing for precise engineering of the absorbing nanostructure design.
dc.language	English
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation.ispartof	Advanced Optical Materials
dc.relation.isbasedon	10.1002/adom.201600166
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0205 Optical Physics, 0906 Electrical and Electronic Engineering, 0912 Materials Engineering
dc.title	Laser-Induced Dewetting for Precise Local Generation of Au Nanostructures for Tunable Solar Absorption
dc.type	Journal Article
utslib.citation.volume	4
utslib.for	0205 Optical Physics
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	0912 Materials Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-02-28T00:15:01Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	4
utslib.citation.issue	8

Abstract:

A precise and scalable method is introduced for realizing deeply subwavelength nanostructures through laser-induced dewetting. This fabrication method is used to realize a three layer planar absorber device that allows for highly tunable selective visible–IR light absorption. This large area laser dewetting method uses a 532 nm laser with a μm ranged focal spot on a translation stage allowing for fine pattern control. A range of laser powers from 60 to 130 mW is explored and it is found that three dramatically different structures, all aperiodic and random in nature are developed. An interconnected metallic nanowire network, partially connected nanowire networks, and spherical or elliptically shaped nanoparticles are observed for low, intermediate, and high laser powers, respectively. Optical absorptance spectra demonstrate a noticeable variation in response to the structures formed. A tunable absorption in the visible range is demonstrated and the partially connected nanowires show the greatest enhancement in broadband absorption compared to the other structures. Finite element simulations uncover plasmonic and magnetic resonances as the underlying mechanisms for the absorbing behavior. This high degree of control over the dewetting area makes this technique a suitable candidate for many photonic and solar applications allowing for precise engineering of the absorbing nanostructure design.

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http://hdl.handle.net/10453/154903