Search: id:"swepub:oai:research.chalmers.se:7bc6f2ef-ba40-44a4-9925-0754625aba88" >
Directional Nanopla...
Directional Nanoplasmonic Antennas for Self-Referenced Refractometric Molecular Analysis
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- Wersäll, Martin, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
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- Verre, Ruggero, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
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- Svedendahl, Mikael, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
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- Johansson, Peter, 1961 (author)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Käll, Mikael, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
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- Shegai, Timur, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
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(creator_code:org_t)
- 2014-08-28
- 2014
- English.
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In: Journal of Physical Chemistry C. - : American Chemical Society (ACS). - 1932-7447 .- 1932-7455. ; 118:36, s. 21075-21080
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Abstract
Subject headings
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- Localized surface-plasmon resonance (LSPR) sensors are typically based on tracing resonance peak shifts that precisely follow changes in the local refractive index. Such measurements usually require a spectrometer, a stable light source, and an accurate LSPR position tracing technique. As a simple but efficient alternative, we investigated a self-referenced single-wavelength sensing scheme based on angle-dependent and highly directional radiation patterns originating from a monolayer of asymmetric gold nanodimers. We found that one could easily trace a model biotinneutravidin recognition reaction as well as minute bulk refractive index changes, by measuring the intensity ratio between the light scattered in two different directions with respect to the dimers. The refractometric resolution of the methodology was estimated to be on the order of Delta n approximate to 10(-5) RIU. These results may be particularly useful for label-free biosensing applications that require a combination of simple and cost-effective optical readout with a reasonable sensitivity.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- sensitivity
- proteins
- surface-plasmon resonance
- biosensors
- light-emission
- dipoles
- sensors
- lithography
- interface
- Chemistry
- Fysik
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Wersäll, Martin, ...
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Verre, Ruggero, ...
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Svedendahl, Mika ...
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Johansson, Peter ...
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Käll, Mikael, 19 ...
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Shegai, Timur, 1 ...
- 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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and Condensed Matter ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Journal of Physi ...
- By the university
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Chalmers University of Technology
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Örebro University
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Royal Institute of Technology