Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Hydrogen Sensing Using Thin-Film Perfect Light Absorber | |
M.ElKabbash; K.V.Sreekanth; Y.Alapan; M.Kim; J.Cole | |
2019 | |
发表期刊 | Acs Photonics
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ISSN | 2330-4022 |
卷号 | 6期号:8页码:1889-1894 |
摘要 | Hydrogen sensing is important in many industrial, biomedical, environmental, and energy applications. Realizing a practical, reliable, and inexpensive hydrogen sensor, however, is an ongoing challenge. Here, we demonstrate hydrogen sensing based on an optically active metal-dielectric-metal (MDM) perfect light absorber. The cavity enables perfect broadband light absorption (>99.999%) with optical losses localized in an ultrathin palladium (Pd) layer. Upon exposure to hydrogen, the Pd layer forms a hydride which actively shifts the cavity minimum reflectance wavelength by similar to 60 nm for a hydrogen concentration of 4%. The sensor enjoys extremely high figure of merit. The ease of fabrication, large area, and high sensitivity of our sensor make it an attractive and practical option, especially for miniaturized hydrogen sensors vital for medical and food safety applications. |
关键词 | thin films,Fabry-Perot cavity,interference,gas sensing,hydrogen,sensing,nanophotonics,dielectric function,absorption,palladium |
DOI | 10.1021/acsphotonics.9b00764 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/63401 |
专题 | 中国科学院长春光学精密机械与物理研究所 |
推荐引用方式 GB/T 7714 | M.ElKabbash,K.V.Sreekanth,Y.Alapan,et al. Hydrogen Sensing Using Thin-Film Perfect Light Absorber[J]. Acs Photonics,2019,6(8):1889-1894. |
APA | M.ElKabbash,K.V.Sreekanth,Y.Alapan,M.Kim,&J.Cole.(2019).Hydrogen Sensing Using Thin-Film Perfect Light Absorber.Acs Photonics,6(8),1889-1894. |
MLA | M.ElKabbash,et al."Hydrogen Sensing Using Thin-Film Perfect Light Absorber".Acs Photonics 6.8(2019):1889-1894. |
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