Kapak Resmi

Polarization Property Associated with Surface Plasmon Resonance in a Palladium Thin-Film Coated Aluminum Grating in a Conical Mounting and Its Application to Hydrogen Gas Detection

Kaydedildi:
Yayımlandı:Sensors vol. 24, no. 6 (2024), p. 1990
Yazar: Matsuda, Toyonori
Diğer Yazarlar: Tsunoda, Isao, Koba, Shinichiro, Oshiro, Yu, Odagawa, Hiroyuki
Baskı/Yayın Bilgisi:
MDPI AG
Konular:
Japan
Hydrogen
Aluminum
Computer simulation
Measurement techniques
Gas detectors
Light
Thin films
Optics
Online Erişim:Citation/Abstract
Full Text + Graphics
Full Text - PDF
Etiketler: Etiketle
Etiket eklenmemiş, İlk siz ekleyin!
Özet:We have investigated a polarization property of the (specularly) reflected light from an aluminum grating, coated with a palladium (Pd) thin-film on its surface. The polarization property, which is associated with surface plasmon resonance (SPR), and occurs in the Pd thin-film on the aluminum grating in a conical mounting, is observed as a rapid change in the normalized Stokes parameter <inline-formula>s3,</inline-formula> around the resonance angle, <inline-formula>θsp</inline-formula>, at which point, SPR occurs. The sensing technique used the rapid change in <inline-formula>s3</inline-formula> to allow us to successfully detect a small change in the complex refractive index of the Pd thin-film layer upon exposure to hydrogen gas, with a concentration near the lower explosion level. Experimental results showed that the sensing technique provided a sensitive and stable response when the Pd thin-film layer was exposed to gas mixtures containing hydrogen at concentrations of 1 to 4% (by volume) in nitrogen.
ISSN:1424-8220
DOI:10.3390/s24061990
Kaynak:Health & Medical Collection