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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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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