In this report, we introduce a non-planar repeated dewetting approach to fabricate gold nanoislands (NIs), uniformly distributed on the wide and highly curved surface of tapered fiber (TF). Through-TF measurements show that the device can achieve a limit of detection in aqueous solution of 10-7 M for rhodamine 6G and 10-5 M for serotonin and dopamine at near-infrared wavelengths. We envision our technology as a first step towards the unexplored frontier of in-vivo label-free plasmonic neural interface.
SERS Detection of Neurotransmitters through Gold Nanoislands-Decorated Tapered Optical Fibers
Pisano F.;
2023
Abstract
In this report, we introduce a non-planar repeated dewetting approach to fabricate gold nanoislands (NIs), uniformly distributed on the wide and highly curved surface of tapered fiber (TF). Through-TF measurements show that the device can achieve a limit of detection in aqueous solution of 10-7 M for rhodamine 6G and 10-5 M for serotonin and dopamine at near-infrared wavelengths. We envision our technology as a first step towards the unexplored frontier of in-vivo label-free plasmonic neural interface.File in questo prodotto:
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