Toward Ultimate Nanoplasmonics Modeling
| Autor: | Jose M. Taboada, F. Javier García de Abajo, CIC BiomaGUNE, Fernando Obelleiro, Diego Martinez Solis, Luis M. Liz-Marzán |
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| Rok vydání: | 2014 |
| Předmět: |
Models
Molecular Electromagnetic field Materials science Field (physics) business.industry Surface integral Molecular Conformation General Engineering Nanophotonics Physics::Optics General Physics and Astronomy Method of moments (statistics) Nanostructures Physical Phenomena Wavelength Optics Electronic engineering Nanoparticles Nanotechnology General Materials Science Gold Multipole expansion business Plasmon |
| Zdroj: | ACS Nano. 8:7559-7570 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/nn5037703 |
| Popis: | Advances in the field of nanoplasmonics are hindered by the limited capabilities of simulation tools in dealing with realistic systems comprising regions that extend over many light wavelengths. We show that the optical response of unprecedentedly large systems can be accurately calculated by using a combination of surface integral equation (SIE) method of moments (MoM) formulation and an expansion of the electromagnetic fields in a suitable set of spatial wave functions via fast multipole methods. We start with a critical review of volume versus surface integral methods, followed by a short tutorial on the key features that render plasmons useful for sensing (field enhancement and confinement). We then use the SIE-MoM to examine the plasmonic and sensing capabilities of various systems with increasing degrees of complexity, including both individual and interacting gold nanorods and nanostars, as well as large random and periodic arrangements of ∼1000 gold nanorods. We believe that the present results and methodology raise the standard of numerical electromagnetic simulations in the field of nanoplasmonics to a new level, which can be beneficial for the design of advanced nanophotonic devices and optical sensing structures. |
| Databáze: | OpenAIRE |
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