Andrea Chiappini
1, Cristina Armellini
1, Alessandro Carpentiero
1, Laura Pasquardini
2,3, Lorenzo Lunelli
2,4, Alessandro Vaccari
5, Stefano Pelli
6,7, Anna Lukowiak
8, Cecilia Pederzolli
2, Giancarlo C. Righini
6,7, Roberta Ramponi
9, Maurizio Ferrari
1,7
1CNR-IFN CSMFO Lab., Via alla Cascata 56/C, Povo, 38123 Trento, Italy
2FBK-LaBSSAH, via Sommarive 18, 38123 Povo Trento, Italy
3Department of Industrial Engineering, Univ. of Trento, Via Sommarive 9, 38123 Povo Trento, Italy
4CNR-Institute of Biophysics, Unit at Trento, via alla Cascata 56,38123 Povo Trento, Italy
5ARES unit at FBK-CMM, Via Sommarive 18, Povo, 38123 Trento, Italy
6IFAC - CNR, MiPLab., Via Madonna del Piano10, 50019 Sesto Fiorentino, Italy
7Enrico Fermi Centre, Piazza del Viminale 1, 00184 Roma, Italy
8Institute of Low Temperature and Structure Research, PAS, 2 Okolna St., 50-950 Wroclaw, Poland
9IFN-CNR and Politecnico di Milano, Dip. di Fisica, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
Abstract
In this paper we report on the fabrication and the characterization of colloidal systems considering complementary structures based on responsive artificial opal both in direct and inverse configuration. We will discuss alternative systems such as: (i) chromatic composite structure as chemical sensor based on polystyrene (PS) nanoparticles (NPs) embedded in elastomeric matrix, where the application of specific organic solvents produces a variation of its color; (ii) metallic dielectric structures, where the infiltration of colloidal crystals with metallic nanoparticles permits to modify the optical properties of the common opal and can be usefully exploited as SERS substrates; (iii) inverse silica opal functionalized with fluorescent aptamers in order to develop biosensors in dye labelled fluorescence detection scheme.
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