Controlled In Situ Seed-Mediated Growth of Gold and Silver Nanoparticles on an Optical Fiber Platform for Plasmonic Sensing Applications

Controlled In Situ Seed-Mediated Growth of Gold and Silver Nanoparticles on an Optical Fiber Platform for Plasmonic Sensing Applications

This study presents an in situ growth technique to develop highly sensitive plasmonic fiber optic sensors with an excellent control over the plasmonic properties of gold (AuNPs) and silver nanoparticles (AgNPs). Here, we exploit the dual functionality of the U-bent fiber optic sensor (FOS) probes, w...

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Veröffentlicht in:Plasmonics (Norwell, Mass.) Mass.), 2020-02, Vol.15 (1), p.51-60
Hauptverfasser: Manoharan, Hariharan, KC, Dharanibalaji, Sai, V. V. R.
Format: Artikel
Sprache:eng
Schlagworte:
Absorbance
Ascorbic acid
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Cetyltrimethylammonium bromide
Chemistry
Chemistry and Materials Science
Evanescent waves
Fiber optics
Gold
Nanoparticles
Nanotechnology
Optical density
Optical fibers
Raman spectra
Red shift
Sensitivity enhancement
Silver
Sodium hydroxide
Spectral sensitivity
Substrates
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Zusammenfassung:This study presents an in situ growth technique to develop highly sensitive plasmonic fiber optic sensors with an excellent control over the plasmonic properties of gold (AuNPs) and silver nanoparticles (AgNPs). Here, we exploit the dual functionality of the U-bent fiber optic sensor (FOS) probes, where the probe acts as, firstly, the substrate for nanoparticles’ growth and, secondly, an invaluable tool to monitor as well as control the gold and silver seed binding to the surface amine groups and subsequently their growth in real time by means of the evanescent wave absorbance (EWA) spectral response. Au and Ag seeds (
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-019-01008-6