Investigation of the optical properties of hollow aluminium 'nano-caps'

Liu, J; Cankurtaran, B; McCredie, G; Ford, MJ; Wieczorek, L; Cortie, MB

Investigation of the optical properties of hollow aluminium 'nano-caps'

Liu, J Cankurtaran, B McCredie, G Ford, MJ

Wieczorek, L Cortie, MB

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Publication Type:: Journal Article
Citation:: Nanotechnology, 2005, 16 (12), pp. 3023 - 3028
Issue Date:: 2005-12-01

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Field	Value	Language
dc.contributor.author	Liu, J	en_US
dc.contributor.author	Cankurtaran, B	en_US
dc.contributor.author	McCredie, G	en_US
dc.contributor.author	Ford, MJ https://orcid.org/0000-0002-8595-5900	en_US
dc.contributor.author	Wieczorek, L	en_US
dc.contributor.author	Cortie, MB https://orcid.org/0000-0003-3202-6398	en_US
dc.date.issued	2005-12-01	en_US
dc.identifier.citation	Nanotechnology, 2005, 16 (12), pp. 3023 - 3028	en_US
dc.identifier.issn	0957-4484	en_US
dc.identifier.uri	http://hdl.handle.net/10453/5868
dc.description.abstract	A colloidal suspension of hollow aluminium, cap-shaped nanoparticles ('nano-caps') can be conveniently produced by evaporation of aluminium onto a spin-coated layer of polystyrene nanoparticles (PSNPs), followed by sonication and dissolution of the polymer template. Although ordinary spherical aluminium nanoparticles have a plasmon resonance in the ultra-violet, the 'nano-caps' show plasmon absorption between 700 and 1200 nm due to their geometry. The position of their extinction peaks can be tuned by varying the thickness of the aluminium and the shape of the nano-cap. The optical properties of these shapes were modelled using the discrete dipole approximation method, which confirmed that the 'caps' have very significantly red-shifted absorbance and scattering compared to spheres. This finding suggests that aluminium nano-caps might compete with gold and silver nanoparticles in applications requiring absorption in the near infrared. © 2005 IOP Publishing Ltd.	en_US
dc.relation.ispartof	Nanotechnology	en_US
dc.relation.isbasedon	10.1088/0957-4484/16/12/049	en_US
dc.subject.classification	Nanoscience & Nanotechnology	en_US
dc.title	Investigation of the optical properties of hollow aluminium 'nano-caps'	en_US
dc.type	Journal Article
utslib.citation.volume	12	en_US
utslib.citation.volume	16	en_US
utslib.for	0904 Chemical Engineering	en_US
dc.location.activity	ABC
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Research)
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	12	en_US
pubs.publication-status	Published	en_US
pubs.volume	16	en_US

Abstract:

A colloidal suspension of hollow aluminium, cap-shaped nanoparticles ('nano-caps') can be conveniently produced by evaporation of aluminium onto a spin-coated layer of polystyrene nanoparticles (PSNPs), followed by sonication and dissolution of the polymer template. Although ordinary spherical aluminium nanoparticles have a plasmon resonance in the ultra-violet, the 'nano-caps' show plasmon absorption between 700 and 1200 nm due to their geometry. The position of their extinction peaks can be tuned by varying the thickness of the aluminium and the shape of the nano-cap. The optical properties of these shapes were modelled using the discrete dipole approximation method, which confirmed that the 'caps' have very significantly red-shifted absorbance and scattering compared to spheres. This finding suggests that aluminium nano-caps might compete with gold and silver nanoparticles in applications requiring absorption in the near infrared. © 2005 IOP Publishing Ltd.

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http://hdl.handle.net/10453/5868