Quick response hydrogen LSPR sensor based on a hetero-core fiber structure with palladium nanoparticles.
Quick response hydrogen LSPR sensor based on a hetero-core fiber structure with palladium nanoparticles.
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DOI：
10.1364/oe.412789
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发表时间：
2020-12
期刊：
影响因子：
3.8
通讯作者：
M. Mikami;D. Komatsu;A. Hosoki;M. Nishiyama;H. Igawa;A. Seki;S. Kubodera;Kazuhiro Watanabe
中科院分区：
文献类型：
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作者：
M. Mikami;D. Komatsu;A. Hosoki;M. Nishiyama;H. Igawa;A. Seki;S. Kubodera;Kazuhiro Watanabe
本文研制了一种新型的光纤局部表面等离子体共振（LSPR）氢传感器，该传感器是基于钯纳米粒子（PdNPs）在圆柱形包层表面上的异质芯结构。在850 nm工作的LED光强实验中，发现4%氢气的响应时间为1.5 s，恢复时间为3.2 s，传输损耗变化为0.23 dB，是光纤氢传感器中响应时间最快的。该传感器解决了以前报道的SPR传感器中存在的灵敏度和响应时间之间不可避免的权衡问题，即使在感兴趣的高灵敏度区域，响应时间也保持在2.0 s以下。
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.