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Highly sensitive fluorescence detection system for microfluidic lab-on-a-chip.
MedLine Citation:
PMID:  21431240     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We demonstrate a compact, low cost and practical fluorescence detection system for lab-on-a-chip applications. The system comprises a commercially available InGaN light emitting diode (501 nm) as light source, an organic or silicon photodiode detector, absorptive dye coated colour filters and linear and reflective polarisers. An injection moulded polystyrene microfluidic chip is used as the platform for fluorescence immunoassays for cardiac markers myoglobin and CK-MB. The optical limit of detection (LOD) is measured using a TransFluoSphere® suspension at 5.6 × 10(4) beads µl(-1) which can be equated to ∼3 nM fluorescein equivalent concentration. The LOD for the human plasma immunoassays is measured as 1.5 ng ml(-1) for both myoglobin and CK-MB.
Authors:
Gihan Ryu; Jingsong Huang; Oliver Hofmann; Claire A Walshe; Jasmine Y Y Sze; Gareth D McClean; Alan Mosley; Simon J Rattle; John C Demello; Andrew J Demello; Donal D C Bradley
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-24
Journal Detail:
Title:  Lab on a chip     Volume:  -     ISSN:  1473-0189     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101128948     Medline TA:  Lab Chip     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Molecular Vision Ltd. BioIncubator Unit, Bessemer Building, Imperial College London, London, SW7 2BP, UK. simon.rattle@molecularvision.co.uk.
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