Title :
Low Cost Optical Array Sensing Platform
Author :
Lau, King Tong ; Shepherd, Roderick L. ; Yerazunis, Bill ; Diamond, Dermot
Author_Institution :
Dublin City Univ., Dublin
Abstract :
A low cost, highly sensitive optical device was constructed with an array of LED emitter and a single LED light detector for colorimetric analysis. Enhanced selectivity for a specific chromophore was obtained by choosing LEDs with emission bands that overlap with its absorption band. This multi-sensor approach coupled with statistical technique PCA was demonstrated to discriminate between various single-dye samples and to resolve complex colour mixtures.
Keywords :
chemical sensors; colorimetry; light emitting diodes; optical arrays; optical sensors; photometers; principal component analysis; LED emitter array; LED light detector; PCA; chemical sensing; chromophore selectivity; colorimetric analysis; complex colour mixture; multi-sensor approach; multivariate analysis; optical array sensing platform; optical device; optical sensor; photometer; principal component analysis; single-dye sample; Chemical analysis; Chemical sensors; Costs; Light emitting diodes; Light sources; Optical arrays; Optical sensors; Photometry; Reflectivity; Sensor arrays; LED detector; PCA; colorimetric analysis; multivariate analysis; optical sensing; pattern recognition;
Conference_Titel :
Sensors, 2006. 5th IEEE Conference on
Conference_Location :
Daegu
Print_ISBN :
1-4244-0375-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.355776
