title: Optimal geometric parameters of ordered arrays of nanoprisms for enhanced sensitivity in localized plasmon based sensors.
abstract: Plasmonic sensors based on ordered arrays of nanoprisms are optimized in terms of their geometric parameters like size, height, aspect ratio for Au, Ag or Au0.5-Ag0.5 alloy to be used in the visible or near IR spectral range. The two figures of merit used for the optimization are the bulk and the surface sensitivity: the first is important for optimizing the sensing to large volume analytes whereas the latter is more important when dealing with small bio-molecules immobilized in close proximity to the nanoparticle surface. A comparison is made between experimentally obtained nanoprisms arrays and simulated ones by using Finite Elements Methods (FEM) techniques.
authors.affiliation: Department of Physics and Astronomy "G.Galilei",Università di Padova, Via Marzolo 8, 35131 Padova, Italy. Electronic address: niccolotomaso.michieli@unipd.it.
authors.forename: Niccolò
authors.initials: N
authors.lastname: Michieli
authors.affiliation: Department of Physics and Astronomy "G.Galilei",Università di Padova, Via Marzolo 8, 35131 Padova, Italy.
authors.forename: Boris
authors.initials: B
authors.lastname: Kalinic
authors.affiliation: Department of Physics and Astronomy "G.Galilei",Università di Padova, Via Marzolo 8, 35131 Padova, Italy.
authors.forename: Carlo
authors.initials: C
authors.lastname: Scian
authors.affiliation: Department of Physics and Astronomy "G.Galilei",Università di Padova, Via Marzolo 8, 35131 Padova, Italy.
authors.forename: Tiziana
authors.initials: T
authors.lastname: Cesca
authors.affiliation: Department of Physics and Astronomy "G.Galilei",Università di Padova, Via Marzolo 8, 35131 Padova, Italy. Electronic address: giovanni.mattei@unipd.it.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Mattei
mesh_terms: D000497:Alloys / Q000737:chemistry*; D020342:Finite Element Analysis; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D012031:Refractometry; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D000497:Alloys; D012834:Silver; D006046:Gold
keywords: Biosensors; Finite Elements; Optimization; Plasmonic; Sensitivity; Simulation