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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/189403
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- Title
- Sierpinski fractal plasmonic nanoantennas
- Author(s)
- Rosa, Lorenzo; Sun, Kai; Juodkazis, Saulius
- Abstract
- We propose plasmonic Sierpiński gasket, a self-replicating fractal, with structural elements spanning from ∼100 nm to ∼5 µm made by standard electron beam lithography (EBL), metal deposition, and lift-off sequence. Such structures demonstrate light field enhancement from visible to far-IR spectral range and can be scaled up towards THz band. Numerical simulations show that as the fractal order is increased, the optical extinction band broadens from the visible light towards far-IR, achieving a light field enhancement of more than four orders of magnitude in the nano-gap proximity. Such antennas are prospective for IR–THz filter, detection, and emission applications. Fundamental mode simulation of Sierpiński fourth-order fractal gold nanoantenna with 10 nm nano-gap, made by EBL and lift-off.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Source
- Physica Status Solidi: Rapid Research Letters, Vol. 5, no. 5-6 (2011), pp. 175-177
- Publication year
- 2011
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering
- Keyword(s)
- Plasmonic nanoantennas; Plasmonics; Sierpinski fractal; THz range; Visible range
- Publisher
- WILEY-VCH Verlag
- ISSN
- 1862-6254
- Publisher URL
- http://dx.doi.org/10.1002/pssr.201105136
- Copyright
- Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article: Rosa, L., Sun, K. & Juodkazis, S. (2011). ‘Sierpinski fractal plasmonic nanoantennas’, Physical Status Solidi: Rapid Research Letters, 5(5-6), 175-177, which has been published in final form at http://dx.doi.org/10.1002/pssr.201105136. Accepted manuscript of the paper is reproduced here in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed
