INVESTIGADORES
MORENO Mario Sergio Jesus
artículos
Título:
Using Highly Accurate 3D Nanometrology to Model the Optical Properties of Highly Irregular Nanoparticles: A Powerful Tool for Rational Design of Plasmonic Devices
Autor/es:
E.M. PERASSI; J.C. HERNANDEZ-GARRIDO; M.S. MORENO; E.R. ENCINA; E.A. CORONADO; P.A. MIDGLEY
Revista:
NANO LETTERS (PRINT)
Editorial:
AMER CHEMICAL SOC
Referencias:
Año: 2010 vol. 10 p. 2097 - 2104
ISSN:
1530-6984
Resumen:
The realization of materials at the nanometer scale creates new challenges for quantitative characterization and modeling as many physical and chemical properties at the nanoscale are highly size and shape-dependent. In particular, the accurate nanometrological characterization of noble metal nanoparticles (NPs) is crucial for understanding their optical response that isdetermined by the collective excitation of conduction electrons, known as localized surface plasmons. Its manipulation gives place to a variety of applications in ultrasensitive spectroscopies, photonics, improved photovoltaics, imaging, and cancer therapy. Here we show that by combining electron tomography with electrodynamic simulations an accurate optical model of a highly irregular gold NP synthesized by chemical methods could be achieved. This constitutes a novel and rigorous tool for understanding the plasmonic properties of real three-dimensional nano-objects.