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Eu(dbm) 3 phen and Tb(dbm) 3 phen complexes (tris(dibenzoylmethane) mono(1,10-phenantroline) Ln(III)) were impregnated in ordered mesoporous silica nanoparticles (MSNs) with an average size of 50–70 nm and a pore diameter centred at 2.8 nm, with the aim of increasing the luminescence by avoiding concentration quenching and having mainly in mind the application as down-shifter for multi-crystalline...
Artificial circular dichroism [1] is investigated for developing novel devices for active polarization controllers, like rotators and modulators and high efficient molecular sensors. Here we show the chiral behavior raised by metal (Au) nanostructures on dielectric (polystyrene, PS) nanosphere substrate produced by a self assembled procedure that guarantees large area fabrication with low time consuming...
We report on recently achieved theoretical and experimental results concerning nonlinear optical effects in micro and nano structures. We considered second order nonlinearities mainly focusing on second harmonic generation and entangled photon pairs emission by spontaneous parametric down conversion. Different geometries have been investigated: multilayer dielectric stacks, metallo-dielectric stacks,...
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