12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Integrated low-cost leaky wavguide sensor for m...
View graph of relations

« Back

Integrated low-cost leaky wavguide sensor for mu-TAS applications

Research output: Contribution in Book/Report/ProceedingsConference contribution

Published

Publication date2005
Host publicationMicro Total Analysis Systems 2004
EditorsThomas Laurell, Johan Nilsson, Klavs Jensen, D. Jed Harrison, Jorg P. Kutter
Place of publicationCambridge
PublisherRoyal Society of Chemistry
Pages461-463
Number of pages3
Volume2
ISBN (Print)0-85404-896-0 (v. 2), 9780854048960 (v. 2)
Original languageEnglish

Conference

Conference8th International Conference on Miniaturized Systems for Chemistry and Life Sciences
CountrySweden
CityMalmo
Period26/09/0430/09/04

Publication series

NameROYAL SOCIETY OF CHEMISTRY SPECIAL PUBLICATIONS
PublisherROYAL SOC CHEMISTRY
ISSN (Print)0260-6291

Conference

Conference8th International Conference on Miniaturized Systems for Chemistry and Life Sciences
CountrySweden
CityMalmo
Period26/09/0430/09/04

Abstract

An integrated, low-cost, dye clad leaky waveguide (DCLW) device has been fabricated and tested for both refractive index and fluorescence detection in mu-TAS applications. The chip comprises the required flow geometry and optical coupling elements in a robust device that is simple and inexpensive to fabricate. Disposable DCLW chips were fabricated at room temperature by spin-coating both the dye and silica sol-gel waveguiding layers on to a polymer substrate which contained an infected moulded grating coupler. These devices have been designed to increase interaction between the evanescent field light at the channel wall and the materials in the sensing layer within the channels. The DCLW device has been used to detect changes in the refractive index of different concentrations of glycerol and to detect low concentrations of fluorescien, down to 10(-12) M, using a grating coupler.