Polymer-Coated Quartz Microbalance Sensors for Volatile Organic Compound Gases

Authors: Strashilov, V.L.; Alexieva, G.E.; Velichkov, V.N.; Mateva, R.P.; Avramov, I.D.

Source: Sensor Letters, Volume 7, Number 2, April 2009 , pp. 203-211(9)

Publisher: American Scientific Publishers

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Abstract:

Thin polymer films have been spin-coated on quartz crystal microbalance resonators for the aims of sensing a number of volatile organic compound gas types. The deposition process has been optimized for obtaining satisfactory quality films. Film thickness has been varied by a multiple spin-coating process and has shown a positive effect on the sensing characteristics. The studied polymers demonstrate improved sensitivity and resolution to a number of gaseous compounds as compared to other similar studies. Owing to an optimum resonator and oscillator design the detection limit has been brought to the ppm range.

Keywords: GAS SENSORS; POLYMER LAYERS; QUARTZ CRYSTAL MICROBALANCE; QUARTZ OSCILLATOR

Document Type: Research article

DOI: http://dx.doi.org/10.1166/sl.2009.1032

Publication date: 2009-04-01

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