Mikami M, Komatsu D, Hosoki A, Nishiyama M, Igawa H, Seki A, Kubodera S, Watanabe K. Quick response hydrogen LSPR sensor based on a hetero-core fiber structure with palladium nanoparticles.
OPTICS EXPRESS 2021;
29:48-58. [PMID:
33362100 DOI:
10.1364/oe.412789]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
A novel fiber optic localized surface plasmon resonance (LSPR) hydrogen sensor has been developed based on the hetero-core structured with palladium nanoparticles (PdNPs) onto a cylindrical cladding surface. In a light-intensity-based experiment with an LED operating at 850 nm, it has been observed that a transmitted loss change of 0.23 dB was induced with response and recovery times of 1.5 and 3.2 s for 4% hydrogen which are the fastest response times among optical fiber hydrogen sensors. The proposed sensor resolved the inevitable trade-off issue between sensitivity and response time which existed in the previously reported SPR sensors, with keeping the response time below 2.0 s even in a high sensitivity region of interest.
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