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Erschienen in: Microsystem Technologies 5/2013

01.05.2013 | Technical Paper

An adsorption-based mercury sensor with continuous readout

verfasst von: Milija Sarajlić, Zoran G. Đurić, Vesna B. Jović, Srđan P. Petrović, Dragana S. Đorđević

Erschienen in: Microsystem Technologies | Ausgabe 5/2013

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Abstract

A novel readout procedure for a mercury sensor has been proposed. The sensor is based on the surface adsorption. Mercury vapor is adsorbed at the surface of a thin gold layer patterned into four meanders which are connected into a Wheatstone bridge configuration. Sensing is achieved by the resistivity change of the gold film during mercury adsorption. Direct output from the sensor is electric voltage. It takes an additional procedure to convert voltage to mercury concentration. This type of sensor is improved by introducing continuous readout procedure for the voltage–concentration conversion. By using this readout procedure it is possible to monitor mercury vapor concentration as a function of time. Readout is based on the Langmuir time–dependent adsorption theory. This paper illustrates a practical implementation of the new readout procedure.

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Metadaten
Titel
An adsorption-based mercury sensor with continuous readout
verfasst von
Milija Sarajlić
Zoran G. Đurić
Vesna B. Jović
Srđan P. Petrović
Dragana S. Đorđević
Publikationsdatum
01.05.2013
Verlag
Springer-Verlag
Erschienen in
Microsystem Technologies / Ausgabe 5/2013
Print ISSN: 0946-7076
Elektronische ISSN: 1432-1858
DOI
https://doi.org/10.1007/s00542-012-1679-6

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