Sensitive detection of biological species through localized surface-plasmon resonance on gold nanodisks

In this paper, we are interested in the detection of biological molecules. This detection relies on the use of nanosensors based on localized surface-plasmon resonance (LSPR). We discuss the sensitivity of these nanosensors by studying the influence of the concentration of Biotin on the shift of the...

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Veröffentlicht in:	Thin solid films 2009-03, Vol.517 (9), p.2997-3000
Hauptverfasser:	Barbillon, G., Bijeon, J.-L., Plain, J., Royer, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anti-biotin Biosensor Biotechnology Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Engineering Sciences Exact sciences and technology General equipment and techniques Gold nanoparticles Instruments, apparatus, components and techniques common to several branches of physics and astronomy Life Sciences Localized Surface Plasmon Resonance Materials science Micro and nanotechnologies Microelectronics Nanoscale materials and structures: fabrication and characterization Other topics in nanoscale materials and structures Physics Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Streptavidin Surface and interface electron states
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Beschreibung
Zusammenfassung:	In this paper, we are interested in the detection of biological molecules. This detection relies on the use of nanosensors based on localized surface-plasmon resonance (LSPR). We discuss the sensitivity of these nanosensors by studying the influence of the concentration of Biotin on the shift of the LSPR wavelength. Moreover, to study the selectivity of these sensors, the systems Biotin/Anti-Biotin (AB) and Biotin/Streptavidin (SA) are used to detect very weak concentration of AB or SA. We found respectively 7 pM and 3 nM for the limits of detection of SA and AB.
ISSN:	0040-6090 1879-2731
DOI:	10.1016/j.tsf.2008.11.072