Wright, J.D. and Colin, F. and Stockle, R.M. and Shepherd, P.D. and Labayen, T. and Carter, T.J.N. (1998) Development of a piezo-optical chemical monitoring system. In: 4th European Conference on Optical Chemical Sensors and Biosensors, March 29-April 01, 1998 , Munster, Germany.
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Abstract
The development of an environmental and occupational chemical monitoring system based on a piezoelectric polymer film badge is described. Colour changes in reagent spots on the polymer film are measured by illumination with a flashing LED. Non-radiative decay of the excited states produced by optical absorption leads to heat and thermal expansion which stresses the polymer, generating a charge which is measured using a lock-in amplifier. The principles and the optimisation of materials and measuring system are described with reference to the development of an ammonia monitoring system.
| Item Type: | Conference or workshop item (Paper) |
|---|---|
| Additional information: | proceedings paper |
| Uncontrolled keywords: | environment; occupational monitoring; sensor; ammonia; polyvinylidene fluoride |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group Faculties > Science Technology and Medical Studies > School of Physical Sciences |
| Depositing User: | Tara Puri |
| Date Deposited: | 25 Mar 2009 16:51 |
| Last Modified: | 25 Mar 2009 16:51 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/17283 (The current URI for this page, for reference purposes) |
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