Nature Materials, volume 8, issue 11, pages 867-871
Plasmonic nanorod metamaterials for biosensing.
Kabashin A.V.
1, 2
,
Evans P.
3
,
Pastkovsky S
2
,
Hendren W
3
,
Wurtz G A
3, 4
,
Atkinson R.
3
,
Pollard R.
3
,
PODOLSKIY V. A.
5
,
Zayats A V
3
1
Laboratoire Lasers, Plasmas et Procédés Photoniques (LP3 UMR 6182 CNRS), Faculté des Sciences de Luminy, Université de Méditerranée, 13288 Marseille Cedex 09, France
|
2
Department of Engineering Physics, École Polytechnique de Montréal, Québec H3C 3A7, Canada
|
3
Centre for Nanostructured Media, The Queen’s University of Belfast, Belfast BT7 1NN, UK
|
4
Present address: Department of Chemistry and Physics, University of North Florida, Jacksonville, Florida 32224, USA,
|
5
Physics Department, Oregon State University, Corvallis, Oregon 97331, USA
|
Publication type: Journal Article
Publication date: 2009-10-11
Journal:
Nature Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 41.2
ISSN: 14761122, 14764660
DOI:
10.1038/nmat2546
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
Label-free plasmonic biosensors rely either on surface plasmon polaritons or on localized surface plasmons on continuous or nanostructured noble-metal surfaces to detect molecular-binding events. Despite undisputed advantages, including spectral tunability, strong enhancement of the local electric field and much better adaptability to modern nanobiotechnology architectures, localized plasmons demonstrate orders of magnitude lower sensitivity compared with their guided counterparts. Here, we demonstrate an improvement in biosensing technology using a plasmonic metamaterial that is capable of supporting a guided mode in a porous nanorod layer. Benefiting from a substantial overlap between the probing field and the active biological substance incorporated between the nanorods and a strong plasmon-mediated energy confinement inside the layer, this metamaterial provides an enhanced sensitivity to refractive-index variations of the medium between the rods (more than 30,000 nm per refractive-index unit). We demonstrate the feasibility of our approach using a standard streptavidin-biotin affinity model and record considerable improvement in the detection limit of small analytes compared with conventional label-free plasmonic devices.
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Kabashin A. et al. Plasmonic nanorod metamaterials for biosensing. // Nature Materials. 2009. Vol. 8. No. 11. pp. 867-871.
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Kabashin A., Evans P., Pastkovsky S., Hendren W., Wurtz G. A., Atkinson R., Pollard R., PODOLSKIY V. A., Zayats A. V. Plasmonic nanorod metamaterials for biosensing. // Nature Materials. 2009. Vol. 8. No. 11. pp. 867-871.
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TY - JOUR
DO - 10.1038/nmat2546
UR - https://doi.org/10.1038%2Fnmat2546
TI - Plasmonic nanorod metamaterials for biosensing.
T2 - Nature Materials
AU - Kabashin, A.V.
AU - Evans, P.
AU - Pastkovsky, S
AU - Hendren, W
AU - Wurtz, G A
AU - Atkinson, R.
AU - Pollard, R.
AU - PODOLSKIY, V. A.
AU - Zayats, A V
PY - 2009
DA - 2009/10/11 00:00:00
PB - Springer Nature
SP - 867-871
IS - 11
VL - 8
SN - 1476-1122
SN - 1476-4660
ER -
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@article{2009_Kabashin,
author = {A.V. Kabashin and P. Evans and S Pastkovsky and W Hendren and G A Wurtz and R. Atkinson and R. Pollard and V. A. PODOLSKIY and A V Zayats},
title = {Plasmonic nanorod metamaterials for biosensing.},
journal = {Nature Materials},
year = {2009},
volume = {8},
publisher = {Springer Nature},
month = {oct},
url = {https://doi.org/10.1038%2Fnmat2546},
number = {11},
pages = {867--871},
doi = {10.1038/nmat2546}
}
Cite this
MLA
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Kabashin, A.V., et al. “Plasmonic nanorod metamaterials for biosensing..” Nature Materials, vol. 8, no. 11, Oct. 2009, pp. 867-871. https://doi.org/10.1038%2Fnmat2546.
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