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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >LSPR enhanced gasoline sensing with a U-bent optical fiber
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LSPR enhanced gasoline sensing with a U-bent optical fiber

机译：LSPR用U型光纤增强汽油感测

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摘要

We report here a gasoline sensor utilizing localized surface plasmon resonance (LSPR) phenomenon of metal nanoparticles (NPs) with a U-bent optical fiber. The optical response of the noble metal NPs upon interaction with gasoline has been simulated and experimentally demonstrated. The increase in gasoline vapor over a period of time induces a change in the refractive index of the adjacent medium of nanoparticle colloids, adhering to the probe, and thus the variation has been observed accordingly. This change in the refractive index in the close proximity to noble metals NPs produces a measurable variation in the output signal that has been correlated with the increase in the concentration of gasoline. The sensor provides better sensitivity corresponding to AgNPs when compared to AuNPs. However, in terms of stability, AuNPs-based LSPR performs better than the AgNPs-based plasmonic response. The present sensing set-up offers a light weight, robust and easy to implement platform that has potent application in detecting volatile liquids very effectively.
机译：我们在这里报告的汽油传感器利用U型弯曲光纤利用金属纳米颗粒（NPs）的局部表面等离子体激元共振（LSPR）现象。贵金属NP与汽油相互作用时的光学响应已得到模拟和实验证明。汽油蒸气在一段时间内的增加引起纳米颗粒胶体的相邻介质的折射率的变化，该折射率粘附到探针上，因此已经观察到该变化。紧邻贵金属NP的折射率变化会在输出信号中产生可测量的变化，该变化与汽油浓度的增加相关。与AuNPs相比，该传感器提供了与AgNPs相对应的更好的灵敏度。但是，就稳定性而言，基于AuNPs的LSPR比基于AgNPs的等离子体响应更好。本感测装置提供了重量轻，坚固且易于实施的平台，在有效地检测挥发性液体方面具有强大的应用前景。

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