Low Cost Optical Array Sensing Platform

Author

Lau, King Tong ; Shepherd, Roderick L. ; Yerazunis, Bill ; Diamond, Dermot

Author_Institution

Dublin City Univ., Dublin

fYear

2006

fDate

22-25 Oct. 2006

Firstpage

287

Lastpage

290

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2006. 5th IEEE Conference on

Conference_Location

Daegu

ISSN

1930-0395

Print_ISBN

1-4244-0375-8

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2007.355776

Filename

4178614