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Surface plasmon sensor for NO 2 gas
Author(s) -
ElBasaty A. B.,
ElBrolossy T. A.,
Abdalla S.,
Negm S.,
Abdella R. A.,
Talaat H.
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2980
Subject(s) - surface plasmon resonance , detection limit , surface plasmon , prism , analytical chemistry (journal) , nitrogen dioxide , layer (electronics) , chemistry , materials science , plasmon , optoelectronics , thin film , nanotechnology , optics , chromatography , physics , organic chemistry , nanoparticle
Surface plasmon resonance (SPR) based sensors using silver (Ag) thin films have been successfully applied for the detection of nitrogen dioxide (NO 2 ) gas. The SPR sensors have cobalt–phthalocyanine (CoPc) as an active add‐layer. A surface plasmon was generated via a prism coupler in Kretschmann configuration. We found that the detection limit of SPR sensor is 0.07 ppm in an ambient environment at normal temperature and pressure (NTP). The simple structure of the SPR sensor makes it superior to liquid chemical sensors for the detection of NO 2 . Copyright © 2008 John Wiley & Sons, Ltd.