Probe gas sensing system based on reflected light detection from localized surface plasmon resonance
Probe gas sensing system based on reflected light detection from localized surface plasmon resonance
复制标题
基于局域表面等离子体共振反射光检测的探针气体传感系统
DOI：
10.1109/isoen.2019.8823157
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Kenshi Hayashi
中科院分区：
文献类型：
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作者：
Hao Guo;Takaaki Soeda;Zhongyuan Yang;Fumihiro Sassa;Kenshi Hayashi
本研究开发了一种探针式气体检测系统，可方便地用于气体检测。气体传感机理是利用局域表面等离子体共振（LSPR）传感器，其基于由暴露于金属纳米颗粒层的气体的折射率变化引起的反射光变化。LSPR层通过在玻璃衬底上真空溅射AuNPs，在银生长溶液中生长并随后热退火来制备。研制了一套由光纤探头、光源和光谱仪组成的光学系统，用于检测反射光的变化。研究发现，与金属纳米粒子一侧入射光相比，玻璃一侧入射光可以获得更清晰的光谱峰。此外，具有5小时银生长时间的LSPR传感器对乙酸气体具有最佳响应。这一工作表明，反射式气体检测系统在气体检测领域具有很大的应用潜力。
The present study explored a probe type gas detection system which can be used to detect the gas conveniently. The gas sensing mechanism is utilizing Localized Surface Plasmon Resonance (LSPR) sensor which based on the reflected light change caused by the refractive index changes of gas where exposing to the metal nanoparticles layer. The LSPR layer was prepared by vacuum sputtering of AuNPs on a glass substrate, growing in silver growth solution and consequently thermal annealing. An optical system which composed of fiber probe, light source and spectrometer was developed to detect the change of reflected light. It was found that compared with incident light irradiating from metal nanoparticles side, glass side could obtain clearer spectra peak. In addition, a LSPR sensor which had 5 hours silver growth time has the best response to acetic acid gas. This work demonstrated that the reflection detection system has a great potential in gas detecting area.