LIFETIME-BASED CAPILLARY WAVE-GUIDE SENSOR INSTRUMENTATION

Authors
KIESLINGER D DRAXLER S TRZNADEL K LIPPITSCH ME
Citation
D. Kieslinger et al., LIFETIME-BASED CAPILLARY WAVE-GUIDE SENSOR INSTRUMENTATION, Sensors and actuators. B, Chemical, 39(1-3), 1997, pp. 300-304
Citations number
14
Categorie Soggetti
Electrochemistry,"Chemistry Analytical","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
39
Issue
1-3
Year of publication
1997
Pages
300 - 304
Database
ISI
SICI code
0925-4005(1997)39:1-3<300:LCWSI>2.0.ZU;2-6
Abstract
A small, portable, inexpensive instrument for measuring fluorescence l ifetimes in optical sensors has been developed, which employs a super- bright blue or red Light-emitting diode (LED) as excitation source and a photodiode with a fast high-gain amplifier for the detection of the fluorescence. A time resolution of down to 20 ns can be achieved with a total span of more than 5 mu s. Evaluation of the raw data is accom plished by a laptop PC. Performance is demonstrated for an oxygen sens or.