Chirality arising from small defects in gold nanoparticle arrays

B.K. Canfield; S. Kujala; K. Laiho; K. Jefimovs; J. Turunen; M. Kauranen

doi:10.1364/OPEX.14.000950

Chirality arising from small defects in gold nanoparticle arrays

B.K. Canfield, S. Kujala, K. Laiho, K. Jefimovs, J. Turunen, M. Kauranen

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Abstract

The symmetry of metal nanostructures may be broken by their overall features or small-scale defects. To separate the roles of these two mechanisms in chiral symmetry breaking, we prepare gold nanostructures with chirality occurring on different levels. Linear optical measurements reveal small chiral signatures, whereas the chiral responses from second-harmonic generation are enormous. The responses of all structures are remarkably similar, suggesting that uncontrollable defects play an important role in symmetry breaking.

Translated title of the contribution	Chirality arising from small defects in gold nanoparticle arrays
Original language	English
Pages (from-to)	950-955
Journal	Optics Express
Volume	14
Issue number	2
DOIs	https://doi.org/10.1364/OPEX.14.000950
Publication status	Published - 2006
Publication type	A1 Journal article-refereed

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10.1364/OPEX.14.000950

Canfield chirality arising
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-2-950. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

http://urn.fi/URN:NBN:fi:tty-201103311118

Cite this

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AU - Turunen, J.

AU - Kauranen, M.

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AB - The symmetry of metal nanostructures may be broken by their overall features or small-scale defects. To separate the roles of these two mechanisms in chiral symmetry breaking, we prepare gold nanostructures with chirality occurring on different levels. Linear optical measurements reveal small chiral signatures, whereas the chiral responses from second-harmonic generation are enormous. The responses of all structures are remarkably similar, suggesting that uncontrollable defects play an important role in symmetry breaking.

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Chirality arising from small defects in gold nanoparticle arrays

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