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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/224617
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- Surface plasmon resonances in periodic and random patterns of gold nano-disks for broadband light harvesting
- Nishijima, Yoshiaki; Rosa, Lorenzo; Juodkazis, Saulius
- We analyze the localized surface plasmon resonance spectra of periodic square lattice arrays of gold nano-disks, and we describe numerically and experimentally the effect of disorder on resonance width, spectrum, and EM field enhancement in increasingly randomized patterns. The periodic structure shows a narrower and stronger extinction peak, conversely we observe an increase of up to (1-2)x10 2 times enhancement as the disorder is gradually introduced. This allows for simpler, lower resolution fabrication, cost-effective in light harvesting for solar cell and sensing applications. We show that dipole-dipole interactions contribute to diffract light parallel to the surface as a mean of long-range coupling between the nano-disks.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Optics Express, Vol. 20, no. 10 (May 2012), pp. 11466-11477
- Publication year
- FOR Code(s)
- 0205 Optical Physics; 0906 Electrical and Electronic Engineering; 1005 Communications Technologies
- Broadband light harvesting; Gold nano-disks; Periodic square lattice arrays; Random patterns; Surface plasmon resonances
- Optical Society of America
- Publisher URL
- Copyright © 2012 Optical Society of America. The published version is reproduced in accordance with the copyright policy of the publisher. 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://dx.doi.org/10.1364/oe.20.011466. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
- Additional information
- Supported by the Yokohama Academic Foundation and the Research Foundation for Opt-Science and Technology.
- Full text
- Peer reviewed