Electromagnetic fields around silver nanoparticles and dimers

Encai Hao, George C Schatz

Research output: Contribution to journalArticle

1393 Citations (Scopus)

Abstract

The discrete dipole approximation was used for analyzing the electromagnetic fields induced by optical excitation of localized surface plasmon resonances around the silver nanoparticles, monomers and dimers. The particle size, shape and arrangement that led to the largest local electric field (E-field) enhancement near the particle surfaces were determined. It was found that enhancement is a strong function of separation distance and it scales with particle size, such that larger particles give the same enhancement for larger separations. The results show that the plasmon resonances that led to the largest E-fields were those with the longest wavelength dipolar excitation.

Original languageEnglish
Pages (from-to)357-366
Number of pages10
JournalJournal of Chemical Physics
Volume120
Issue number1
DOIs
Publication statusPublished - Jan 1 2004

Fingerprint

Silver
Dimers
Electromagnetic fields
electromagnetic fields
Particle size
silver
dimers
Nanoparticles
nanoparticles
Photoexcitation
Surface plasmon resonance
augmentation
Monomers
Electric fields
Wavelength
surface plasmon resonance
excitation
monomers
dipoles
electric fields

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Electromagnetic fields around silver nanoparticles and dimers. / Hao, Encai; Schatz, George C.

In: Journal of Chemical Physics, Vol. 120, No. 1, 01.01.2004, p. 357-366.

Research output: Contribution to journalArticle

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