On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors


Rushworth, Cathy M., Jones, Gareth, Fischlechner, Martin, Walton, Emma and Morgan, Hywel (2014) On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors Lab on a Chip, 15, (3), pp. 711-717. (doi:10.1039/C4LC01264J).

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Description/Abstract

We have developed a disposable microfluidic chip with integrated cavity mirrors comprised of two pieces of 3M Vikuiti™ enhanced specular reflector II (ESRII) film, for performing cavity-enhanced absorption spectroscopy with a white light-emitting diode (LED). Compared to measurements made with a chip without cavity mirrors, the absorption path length is enhanced by a maximum factor of 28 at 544 nm, and the sensitivity is enhanced by approximately 5 times, enabling micromolar range detection limits to be achieved in an optical path length of only 50 ?m.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1039/C4LC01264J
ISSNs: 1473-0197 (print)
Subjects: Q Science > QC Physics
T Technology > TP Chemical technology
Organisations: Chemistry, Electronics & Computer Science
ePrint ID: 373131
Date :
Date Event
5 December 2014Accepted/In Press
5 December 2014e-pub ahead of print
7 February 2015Published
Date Deposited: 08 Jan 2015 16:57
Last Modified: 17 Apr 2017 06:52
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/373131

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