Authors
Rogelio Rodríguez-Oliveros, Ramón Paniagua-Domínguez, José-Antonio Sánchez-Gil, Demetrio Macias,
Title
Plasmon spectroscopy: Theoretical and numerical calculations, and optimization techniques
In
Nanospectroscopy
Volume
1
Pages
67–94
Publisher
De Grutyer
Year
2015
Indexed by
Abstract
We present an overview of recent advances in plasmonics, mainly concerning theoretical and numerical tools required for the rigorous determination of the spectral properties of complex-shape nanoparticles exhibiting strong localized surface plasmon resonances (LSPRs). Both quasistatic approaches and full electrodynamic methods are described, providing a thorough comparison of their numerical implementations. Special attention is paid to surface integral equation formulations, giving examples of their performance in complicated nanoparticle shapes of interest for their LSPR spectra. In this regard, complex (single) nanoparticle configurations (nanocrosses and nanorods) yield a hierarchy of multiple-order LSPR s with evidence of a rich symmetric or asymmetric (Fano-like) LSPR line shapes. In addition, means to address the design of complex geometries to retrieve LSPR spectra are commented on, with special interest in biologically inspired algorithms. The wealth of LSPR-based applications are discussed in two choice examples, single-nanoparticle surface-enhanced Raman scattering (SERS) and optical heating, and multifrequency nano- antennas for fluorescence and nonlinear optics.
Affiliations
Offprint