Enhanced Raman Scattering of amorphous matrices for Fiber Optics Sensor

International audienc

Development of an artificial nose integrating NEMS and biological olfactory receptors

Development of an artificial nose integrating NEMS and biological olfactory receptor

Leakage interferences applied to surface plasmon analysis

International audienceWe report the experimental combination of leakage radiation microscopy with a Young slit experiment to address the spatial coherence properties of surface waves. We applied this method to measurements of surface plasmon polaritons (SPPs). The relationship between the spatial decay and interference contrast allows us to extract the degree of coherence. In a second step, we investigate the coherence properties of the plasmon in the weak coupling regime between fluorophores and metallic surfaces. Finally, a method is proposed to extract the propagation length of SPPs in a large variety of systems

Silver nanoparticles growth in a mesoporous silica film templated with the F127 triblock copolymer

International audienceThe elaboration of mesoporous silica films supporting silver nanoparticles is described. Mesoporous silica films were infiltrated with silver salt solutions of different concentrations and chemical reduction treatment was performed in situ by NaBH4. The films have been characterized by TEM, AFM, XRD, and UV–vis spectroscopy. Homogeneous distributions of silver nanoparticles have been obtained by this method