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URN:
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http://URN.fi/URN:NBN:fi:tty-201103311118
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Title:
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Chirality arising from small defects in gold nanoparticle arrays |
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Author:
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Canfield, Brian K.; Kujala, Sami; Laiho, Kaisa; Jefimovs, Konstantins; Turunen, Jari; Kauranen, Martti |
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Publication type:
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Artikkeli - Article |
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Issue date:
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2006 |
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DOI:
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http://dx.doi.org/10.1364/OPEX.14.000950
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Description:
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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. |
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University:
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Tampereen teknillinen yliopisto |
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Department:
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Fysiikan laitos – Institute of Physics |
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Abstract:
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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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Copyright:
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This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. |