Localized surface plasmon resonance with five-branched gold nanostars in a plastic optical fiber for bio-chemical sensor implementation.
Sensors (Basel)
; 13(11): 14676-86, 2013 Oct 29.
Article
em En
| MEDLINE
| ID: mdl-24172284
ABSTRACT
In this paper a refractive index sensor based on localized surface plasmon resonance (LSPR) in a Plastic Optical Fiber (POF), is presented and experimentally tested. LSPR is achieved exploiting five-branched gold nanostars (GNS) obtained using Triton X-100 in a seed-growth synthesis. They have the uncommon feature of three localized surface plasmon resonances. The strongest LSPRs fall in two ranges, one in the 600-900 nm range (LSPR 2) and the other one in the 1,100-1,600 nm range (LSPR 3), both sensible to refractive index changes. Anyway, due to the extremely strong attenuation (>10(2) dB/m) of the employed POF in the 1,100-1,600 nm range, only LSPR 2 will be exploited for refractive index change measurements, useful for bio-chemical sensing applications, as a proof of principle of the possibility of realizing a compact, low cost and easy-to-use GNS based device.
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Base de dados:
MEDLINE
Assunto principal:
Técnicas Biossensoriais
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Ressonância de Plasmônio de Superfície
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Nanopartículas Metálicas
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Ouro
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article