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Metallic-Dielectric colloidal photonic crystal on the multimode optical fiber tip: preliminary results as optical fiber SERS probe
Author(s): Pasquale Di Palma; Lucia Sansone; Marianna Pannico; Pellegrino Musto; Stefania Campopiano; Agostino Iadicicco; Michele Giordano
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Paper Abstract

We present an optical fiber device involving metal-dielectric colloidal crystal (MDCC) structures as a platform for surface enhanced Raman-scattering (SERS) sensing applications. The MDCC structures received large interest in last years since they permit to combine localized surface plasmonic resonance (LSPR) of noble metallic nanoparticles and photonic bandgap (PBG) of colloidal type photonic crystals (PhCs). Most of the MDCC structures have been provided onto planar substrates and then investigated as SERS platform. However, the integration and/or combination of the advantages MDCC structures with optical fiber technology represent still open challenges. The present paper reports recent results about MDCCs fabricated directly onto fiber optic tip surface by successive depositions of Au-NPs on PSbased CCs. Our goal is the fabrication of miniaturized fiber optic devices for SERS sensing applications. Numerical and experimental results of different samples are here presented and discussed. For the sensing test, the fiber probes were immersed in a 100μM ethanol solution of 4-Mercaptobenzoic acid (4MBA). Then, preliminary SERS results were retrieved by a Labspec Aramis confocal Raman spectrometer.

Paper Details

Date Published: 11 April 2019
PDF: 7 pages
Proc. SPIE 11028, Optical Sensors 2019, 110282F (11 April 2019); doi: 10.1117/12.2521819
Show Author Affiliations
Pasquale Di Palma, Univ. degli Studi di Napoli Parthenope (Italy)
Lucia Sansone, Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (Italy)
Marianna Pannico, Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (Italy)
Pellegrino Musto, Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (Italy)
Stefania Campopiano, Univ. degli Studi di Napoli Parthenope (Italy)
Agostino Iadicicco, Univ. degli Studi di Napoli Parthenope (Italy)
Michele Giordano, Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (Italy)


Published in SPIE Proceedings Vol. 11028:
Optical Sensors 2019
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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