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Type: 
Journal
Description: 
Silica two-dimensional substrates and nanowires (NWs) forests have been successfully decorated with Au nanoparticles (NPs) through laser ablation by using a pulsed ArF excimer laser, for sensor applications. A uniform coverage of both substrate surfaces with NPs has been achieved controlling the number of laser pulses. The annealing of the as-deposited particles resulted in a uniform well-defined distribution of spherical NPs with an increased average diameter up to 25 nm. The deposited samples on silica NWs forest present a very good plasmonic resonance which resulted to be very sensitive to the changes of the environment (ethanol/water solutions with increasing concentration of ethanol) allowing the detection of changes on the second decimal digit of the refractive index, demonstrating its potentiality for further biosensing functionalities.
Publisher: 
Springer Berlin Heidelberg
Publication date: 
1 May 2016
Authors: 

F Gontad, Anna Paola Caricato, MG Manera, A Colombelli, Vincenzo Resta, Antonietta Taurino, Maura Cesaria, Chiara Leo, A Convertino, A Klini, Alessio Perrone, Roberto Rella, Maurizio Martino

Biblio References: 
Volume: 122 Issue: 5 Pages: 539
Origin: 
Applied Physics A