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9 May 2012 Fluorescence-based optochemical sensor on flexible foils
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This paper describes the implementation of a low-cost technology platform for fluorescence-based optochemical sensors made up of arrays of multimode waveguides and coupling structures integrated onto a flexible substrate. Such a configuration is ideal for multi-analyte detection owing to a possibility of future integration of different dyes in each waveguides. The presence of light sources, fluorescent sensing elements and photodetectors in a foil platform makes it a compact optochemical sensor, which has wide-range of applications in medical, biochemical, and environmental diagnostics. Flexible lightguides fabricated using soft-lithography based replication techniques, are used in combination with 45° micromirror coupling structures, having a loss of 0.5dB. Fluorescent dyes are incorporated with the lightguides enabling a detection of shift in fluorescence-peaks in contact with gases, which are read-out at the detection. Initial measurements yielded promising results of the waveguides mixed with fluorescent dyes showing response to toluene.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sandeep Kalathimekkad, Jeroen Missinne, Juan Diego Arias Espinoza, Bram Van Hoe, Erwin Bosman, Edsger Smits, Rajesh Mandamparambil, Geert Van Steenberge, and Jan Vanfleteren "Fluorescence-based optochemical sensor on flexible foils", Proc. SPIE 8439, Optical Sensing and Detection II, 84390Y (9 May 2012);


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