Gas Detection by Near-Infrared Spectroscopy Based on a Surface Plasmon Resonance Photodetector

Yamamoto, Y.; Oshita, Masaaki; Fukasawa, Masahiro; Saito, Shiro; Kan, Tetsuo

doi:10.1109/mems46641.2020.9056266

Cited by 1 publication

(1 citation statement)

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“…Hence, by designing and optimizing the structural parameters, two absorption peaks related to the surface lattice resonance (SLR) and surface plasmon polaritons (SPP) resonance can be constructed in this plasmonic structure, to match the near-infrared absorption bands of methane in 1653.72 nm and ethanol gas molecules in 1392.64 nm, respectively. 26 Thus, these three factors, namely the preconcentration effect of ZIF-8, the hot-spot field enhancement, and the matching to the near-infrared absorption bands (in addition to Ref. 23) would help to increase the signal strength of the selected gases in the near-infrared range and significantly improve the sensitivity of this sensor to the ppm level.…”

Section: Introductionmentioning

confidence: 99%

Near-infrared dual-band sensing of trace volatile organic compound gases via metal-organic framework patch array integrated on metal film

Deng,

Zhou,

Wang

et al. 2024

Opt. Eng.

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We propose a hybrid plasmonic zeolitic imidazolate framework-8 (ZIF-8) nanostructure to achieve near-infrared dual-band sensing of trace amounts of volatile organic compound (VOC) gases via metal-organic framework patch array integrated on metal (Au) film. To achieve dual-band VOC gas sensing, two absorption peaks related to the surface lattice resonance (SLR) and surface plasmon polaritons (SPP) resonance are constructed in this plasmonic structure, to match the nearinfrared absorption bands of methane and ethanol gas molecules respectively. For an 80 nm thick Au layer, the height and width of ZIF-8 patch and the gap between ZIF-8 patches are optimized to be 0.86, 0.925, and 0.43 μm. Then, this structure shows an SLR at 1392.64 and a SPP resonance at 1653.72 nm, which have peak intensities of 0.735 and 0.855, and the Q-values of 1435 and 253, respectively. Furthermore, the third resonance peak related to the Fano resonance is investigated and can be considered as a feasible alternative to calibrate the measurement without external references.

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Section: Introductionmentioning

confidence: 99%