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Optical waveguide sensor for on-line monitoring of bacteria
Róbert Horváth1, Henrik C Pedersen, Nina Skivesen
1Optics and Fluid Dynamics Department, Rise National Laboratory, DK-4000 Roskilde, Denmark.
Optics Letters
|July 30, 2003
Abstract:
A grating-coupled planar optical waveguide sensor is presented for sensing of bacteria by evanescent waves. The waveguide design results in increased depth of penetration into the sample volume, which makes it suitable for detecting micrometer-sized biological objects. We tested the sensor's performance by monitoring the adhesion of Escherichia coli K12 cells to the sensor surface.