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URN:
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http://URN.fi/URN:NBN:fi:tty-201103311119
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Title:
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Remarkable polarization sensitivity of gold nanoparticle arrays |
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Author:
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Canfield, Brian K.; Kujala, Sami; Kauranen, Martti; Jefimovs, Konstantins; Vallius, Tuomas; Turunen, Jari |
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Publication type:
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Artikkeli - Article |
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Issue date:
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2005 |
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DOI:
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http://dx.doi.org/10.1063/1.1924886
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Description:
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Copyright (2005) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Applied Physics Letters and may be found at http://apl.aip.org/resource/1/applab/v86/i18/p183109_s1. |
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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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In an array of low-symmetry, L-shaped gold nanoparticles, slight distortions of particle shape and arm lengths eliminate the array’s mirror plane. Such asymmetries induce large angular shifts ( ∼ 10°) of the resonant extinction axes directions from those of mirror-symmetric particles. The axes directions exhibit dispersion, as allowed by the lack of any structural features dictating them. The nanostructures are chiral, and evidence of optical activity is observed. Rigorous diffraction theory calculations qualitatively reproduce the data. |
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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. |