Multimode interference devices for focusing in microfluidic channels
Multimode interference devices for focusing in microfluidic channels
Low-cost, compact, automated optical microsystems for chemical analysis, such as microflow cytometers for identification of individual biological cells, require monolithically integrated microlenses for focusing in microfluidic channels, to enable high-resolution scattering and fluorescence measurements. The multimode interference device (MMI), which makes use of self-imaging in multimode waveguides, is shown to be a simple and effective alternative to the microlens for microflow cytometry. The MMIs have been designed, realized, and integrated with microfluidic channels in a silica-based glass waveguide material system. Focal spot sizes of 2.4 µm for MMIs have been measured at foci as far as 43.7 µm into the microfluidic channel.
3067-3069
Hunt, Hamish C.
b58afe40-9102-4a47-8d81-1fdd5463f4fe
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
August 2011
Hunt, Hamish C.
b58afe40-9102-4a47-8d81-1fdd5463f4fe
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Hunt, Hamish C. and Wilkinson, James S.
(2011)
Multimode interference devices for focusing in microfluidic channels.
Optics Letters, 36 (16), .
(doi:10.1364/OL.36.003067).
Abstract
Low-cost, compact, automated optical microsystems for chemical analysis, such as microflow cytometers for identification of individual biological cells, require monolithically integrated microlenses for focusing in microfluidic channels, to enable high-resolution scattering and fluorescence measurements. The multimode interference device (MMI), which makes use of self-imaging in multimode waveguides, is shown to be a simple and effective alternative to the microlens for microflow cytometry. The MMIs have been designed, realized, and integrated with microfluidic channels in a silica-based glass waveguide material system. Focal spot sizes of 2.4 µm for MMIs have been measured at foci as far as 43.7 µm into the microfluidic channel.
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Published date: August 2011
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 201093
URI: http://eprints.soton.ac.uk/id/eprint/201093
ISSN: 0146-9592
PURE UUID: 75d04370-acf2-4eb1-8d4d-50355095c49d
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Date deposited: 28 Oct 2011 07:58
Last modified: 15 Mar 2024 02:33
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Author:
Hamish C. Hunt
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