On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors
On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors
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 µm.
711-717
Rushworth, Cathy M.
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Jones, Gareth
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Fischlechner, Martin
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Walton, Emma
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Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
7 February 2015
Rushworth, Cathy M.
bf4c276f-896c-4069-a8da-91b1c765b28c
Jones, Gareth
469d05ca-944e-43cd-91bc-12074c13848e
Fischlechner, Martin
b3930129-0775-4c05-81c7-475934df97ee
Walton, Emma
f4fe494d-e6e3-4cfc-b2ad-0dab285c01f9
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Rushworth, Cathy M., Jones, Gareth, Fischlechner, Martin, Walton, Emma and Morgan, Hywel
(2015)
On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors.
Lab on a Chip, 15 (3), .
(doi:10.1039/C4LC01264J).
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 µm.
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Accepted/In Press date: 5 December 2014
e-pub ahead of print date: 5 December 2014
Published date: 7 February 2015
Organisations:
Chemistry, Electronics & Computer Science
Identifiers
Local EPrints ID: 373131
URI: http://eprints.soton.ac.uk/id/eprint/373131
ISSN: 1473-0197
PURE UUID: a77bb56d-ebdf-4d88-9bd7-cc1d61ea7cff
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Date deposited: 08 Jan 2015 16:57
Last modified: 15 Mar 2024 03:18
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Contributors
Author:
Cathy M. Rushworth
Author:
Gareth Jones
Author:
Martin Fischlechner
Author:
Emma Walton
Author:
Hywel Morgan
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