30 May 2016 Microgel photonics and lab on fiber technology for advanced label-free fiber optic nanoprobes
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Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99161M (2016) https://doi.org/10.1117/12.2236829
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
Abstract
We experimentally demonstrate a novel optical fiber label free optrode platform resulting from the integration between two rapidly emerging technologies such as Lab-on-Fiber Technology (LOFT) and Microgel Photonics (MPs). The device consists of a microgel (MG) layer painted on a metallic slabs supporting plasmonic resonances, directly integrated on the optical fiber tip. A molecular binding event induces significant changes in the MG layer thickness (and consequently in its 'equivalent' refractive index) resulting in an evident wavelength shift of the resonant feature. As a case of study, glucose-responsive MGs have been synthesized by incorporating into the gel matrix boronic acid moieties, whose interaction with glucose rules the driving forces for gel swelling. Our results pave the way for new technological routes aimed to develop advanced label free fiber optic nanoprobes.
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M. Giaquinto, A. Micco, A. Aliberti, A. Ricciardi, M. Ruvo, A. Cutolo, A. Cusano, "Microgel photonics and lab on fiber technology for advanced label-free fiber optic nanoprobes", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99161M (30 May 2016); doi: 10.1117/12.2236829; https://doi.org/10.1117/12.2236829
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