Magnetite nanoparticles for biosensor model based on bacteria fluorescence A. Poiata, D. E. Creanga, A. Airinei, P. Tupu, C. Goiceanu and O. Avadanei J. Eur. Opt. Soc.-Rapid Publ., 4 (2009) 09024 Published online: 01 June 2009 DOI: 10.2971/jeos.2009.09024