Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control
We present a method for improving the sensing capability of grating coupled surface plasmon resonance (GCSPR) sensors. The grating is rotated azimuthally (φ) until the excitation of double surface plasmon polaritions (SPPs) by a single wavelength is possible. Close to this condition, further tuning...
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sg-ntu-dr.10356-918312023-07-14T15:50:48Z Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control Romanato, Filippo Lee, Kwang Hong Kang, Husen Kartasasmita Ruffato, Gianluca Wong, Chee Cheong School of Materials Science & Engineering DRNTU::Engineering::Materials::Plasma treatment We present a method for improving the sensing capability of grating coupled surface plasmon resonance (GCSPR) sensors. The grating is rotated azimuthally (φ) until the excitation of double surface plasmon polaritions (SPPs) by a single wavelength is possible. Close to this condition, further tuning of the incident wavelength will merge the double SPPs into a multi-SPP resonance which is angularly broad but spectrally sharp. This is the condition where the momentum vector of the propagating SPP is perpendicular to the incident light momentum. We demonstrate this sensitivity enhancement on a Au grating surface using a dodecanethiol (C12) self-assembled monolayer (SAM). Using this method, a shift in resonance angle as large as 3° can be observed. The simulated sensitivity of this method shows that a sensitivity up to 800°/RIU is achievable, which is one order of magnitude greater than that in a conventional fixed grating (φ = 0°) as well as the prism-coupled Kretschmann configuration. Accepted version 2010-03-12T02:57:35Z 2019-12-06T18:12:43Z 2010-03-12T02:57:35Z 2019-12-06T18:12:43Z 2009 2009 Journal Article Romanato, F., Lee, K. H., Kang, H. K., Ruffato, G. & Wong, C. C. (2009). Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control. Optics Express, 17(14), 12145-12154. 1094-4087 https://hdl.handle.net/10356/91831 http://hdl.handle.net/10220/6202 10.1364/OE.17.012145 144239 en Optics express 10 p. application/pdf |
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DRNTU::Engineering::Materials::Plasma treatment Romanato, Filippo Lee, Kwang Hong Kang, Husen Kartasasmita Ruffato, Gianluca Wong, Chee Cheong Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
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We present a method for improving the sensing capability of grating coupled surface plasmon resonance (GCSPR) sensors. The grating is rotated azimuthally (φ) until the excitation of double surface plasmon polaritions (SPPs) by a single wavelength is possible. Close to this condition, further tuning of the incident wavelength will merge the double SPPs into a multi-SPP resonance which is angularly broad but spectrally sharp. This is the condition where the momentum vector of the propagating SPP is perpendicular to the incident light momentum. We demonstrate this sensitivity enhancement on a Au grating surface using a dodecanethiol (C12) self-assembled monolayer (SAM). Using this method, a shift in resonance angle as large as 3° can be observed. The simulated sensitivity of this method shows that a sensitivity up to 800°/RIU is achievable, which is one order of magnitude greater than that in a conventional fixed grating (φ = 0°) as well as the prism-coupled Kretschmann configuration. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Romanato, Filippo Lee, Kwang Hong Kang, Husen Kartasasmita Ruffato, Gianluca Wong, Chee Cheong |
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Article |
author |
Romanato, Filippo Lee, Kwang Hong Kang, Husen Kartasasmita Ruffato, Gianluca Wong, Chee Cheong |
author_sort |
Romanato, Filippo |
title |
Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
title_short |
Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
title_full |
Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
title_fullStr |
Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
title_full_unstemmed |
Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
title_sort |
sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
publishDate |
2010 |
url |
https://hdl.handle.net/10356/91831 http://hdl.handle.net/10220/6202 |
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1772827360203112448 |