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Ultrasensitive and ...
Ultrasensitive and label-free molecular-level detection enabled by light phase control in magnetoplasmonic nanoantennas
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- Maccaferri, Nicolò (author)
- Centro de Investigacion Cooperativa en Nanociencias
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- Gregorczyk, K. E. (author)
- Centro de Investigacion Cooperativa en Nanociencias
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- de Oliveira, Tvag (author)
- Centro de Investigacion Cooperativa en Nanociencias
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- Kataja, M. (author)
- Aalto-Yliopisto,Aalto University
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- van Dijken, S. (author)
- Aalto-Yliopisto,Aalto University
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- Pirzadeh Irannezhad, Zhaleh, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dmitriev, Alexandre, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Åkerman, Johan, 1970 (author)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH),University of Gothenburg,Materialfysik, MF,Department of Physics, University of Gothenburg, Sweden
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- Knez, M. (author)
- Basque Foundation for Science (Ikerbasque)
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- Vavassori, P. (author)
- Centro de Investigacion Cooperativa en Nanociencias,Basque Foundation for Science (Ikerbasque)
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de Oliveira, Thales V. A. G. (author)
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(creator_code:org_t)
- 2015-02-02
- 2015
- English.
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In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 6
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Abstract
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- Systems allowing label-free molecular detection are expected to have enormous impact on biochemical sciences. Research focuses on materials and technologies based on exploiting localized surface plasmon resonances in metallic nanostructures. The reason for this focused attention is their suitability for single-molecule sensing, arising from intrinsically nanoscopic sensing volume and the high sensitivity to the local environment. Here we propose an alternative route, which enables radically improved sensitivity compared with recently reported plasmon-based sensors. Such high sensitivity is achieved by exploiting the control of the phase of light in magnetoplasmonic nanoantennas. We demonstrate a manifold improvement of refractometric sensing figure-of-merit. Most remarkably, we show a raw surface sensitivity (that is, without applying fitting procedures) of two orders of magnitude higher than the current values reported for nanoplasmonic sensors. Such sensitivity corresponds to a mass of similar to 0.8 ag per nanoantenna of polyamide-6.6 (n = 1.51), which is representative for a large variety of polymers, peptides and proteins.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Maccaferri, Nico ...
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Gregorczyk, K. E ...
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de Oliveira, Tva ...
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Kataja, M.
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van Dijken, S.
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Pirzadeh Irannez ...
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Dmitriev, Alexan ...
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Åkerman, Johan, ...
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Knez, M.
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Vavassori, P.
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de Oliveira, Tha ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Nature Communica ...
- By the university
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University of Gothenburg
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Chalmers University of Technology
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Umeå University
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Royal Institute of Technology