A surface plasmon resonance gas sensor in a `compact disc' format

A surface plasmon resonance sensor has been designed using a rotating optical disk coated with a silver film and a transparent dielectric film with a thickness gradient. A pH indicator, bromocresol purple, was used as a receptor on the surface to demonstrate the technique by detecting ammonia. Ammon...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 56; no. 3; pp. 254 - 258
Main Authors Challener, W.A, Ollmann, R.R, Kam, K.K
Format Journal Article
LanguageEnglish
Published Elsevier B.V 22.06.1999
Subjects
Ammonia
Gas sensor
Surface plasmon resonance
Ammonia
Gas sensor
Surface plasmon resonance
Compact disc
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Summary:A surface plasmon resonance sensor has been designed using a rotating optical disk coated with a silver film and a transparent dielectric film with a thickness gradient. A pH indicator, bromocresol purple, was used as a receptor on the surface to demonstrate the technique by detecting ammonia. Ammonia concentrations in the few ppb range could be detected with relatively simple and inexpensive electronics.
ISSN:0925-4005
1873-3077
DOI:10.1016/S0925-4005(99)00194-X