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Light-weight optical sensor for standoff detection of fluorescent biosensors

: Wehner, M.; Thombansen, U.; Raven, N.; Kühn, C.; Schillberg, S.


Aschenbruck, N. (Ed.); Martini, P.; Meier, M.; Tölle, J.:
Future Security. 7th Security Research Conference 2012. Proceedings : Bonn, Germany, September 4-6, 2012
Berlin: Springer, 2012 (Communications in computer and information science 318)
ISBN: 978-3-642-33160-2 (Print)
ISBN: 978-3-642-33161-9 (Online)
ISBN: 3-642-33160-2
ISSN: 1865-0929
Security Research Conference "Future Security" <7, 2012, Bonn>
Fraunhofer ILT ()

Cell-based biosensors can be modified to express fluorescent proteins when in contact with trace substances like TNT. Stand-off detection of activated fluorescent biosensors becomes feasible by optical sensors which shine excitation light on the biosensor and collects the fluorescence light. We propose a low cost, light-weight sensor solution which consists of a LED illuminator, a large aperture light collector and a solid state detector. The irradiance level and the detection efficiency are expected to be sufficient for short range detection.