Fluorescence Intensity Measurements with Display Screen as Excitation Source

Abstract

Several new techniques are emerging to use digital display devices as new type of light source for analytical purpose. We demonstrate the use of a liquid crystal display (LCD) computer screen as excitation light source for determining gaseous oxygen contents over a relatively large area. Meso-scale device platforms are prepared with glass plates incorporating fluidic channels and commercial oxygen sensor patches. Fluorophores are excited by blue wavelength range from the LCD computer screen. the sensor signals exhibit a good linear relationship with respect to the oxygen content. the display devices, with a capability of uniform illumination over a large area for variable wavelengths, have a great potential as light source for high-throughput, multiple-analyte, quantitative chemical analysis. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Department(s)

Electrical and Computer Engineering

Second Department

Chemical and Biochemical Engineering

Keywords and Phrases

charge-coupled device (CCD); color camera; colorimetry; liquid crystal display (LCD); optical oxygen sensor

International Standard Book Number (ISBN)

978-081948599-1

International Standard Serial Number (ISSN)

1605-7422

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Society of Photo-optical Instrumentation Engineers, All rights reserved.

Publication Date

26 Sep 2011

Link to Full Text

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