Articolo in rivista, 2012, ENG, 10.1155/2012/278194
D'Acunto M.; Moroni D.; Salvetti O.
CNR-ISTI, Pisa, Italy - ISM-CNR, Rome, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy
Gold nanoparticles have been widely used during the past few years in various technical and biomedical applications. In particular, the resonance optical properties of nanometer-sized particles have been employed to design biochips and biosensors used as analytical tools. The optical properties of nonfunctionalized gold nanoparticles and core-gold nanoshells play a crucial role for the design of biosensors where gold surface is used as a sensing component. Gold nanoparticles exhibit excellent optical tunability at visible and near-infrared frequencies leading to sharp peaks in their spectral extinction. In this paper, we study how the optical properties of gold nanoparticles and core-gold nanoshells are changed as a function of different sizes, shapes, composition, and biomolecular coating with characteristic shifts towards the near-infrared region. We show that the optical tenability can be carefully tailored for particle sizes falling in the range 100-150 nm. The results should improve the design of sensors working at the detection limit.
Advances in Optical Technologies (Online) 2012 , pp. 278194–?
Infrared imaging, Nanoparticles, Nanodiagnostics, Biosensors
D Acunto Mario, Moroni Davide, D Acunto Mario, Salvetti Ovidio
ISTI – Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo", ISM – Istituto di struttura della materia
ID: 199748
Year: 2012
Type: Articolo in rivista
Creation: 2013-01-22 15:15:25.000
Last update: 2023-03-18 12:13:18.000
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:199748
DOI: 10.1155/2012/278194
Scopus: 2-s2.0-84871392037