Non-regularly shaped plasmon resonant nanoparticle as localized light source for near-field microscopy.


Journal Article

We study numerically two-dimensional nanoparticles with a non-regular shape and demonstrate that these particles can support many more plasmon resonances than a particle with a regular shape (e.g. an ellipse). The electric field distributions associated with these different resonances are investigated in detail in the context of near-field microscopy. Depending on the particle shape, extremely strong and localized near-fields, with intensity larger than 105 that of the illumination wave, can be generated. We also discuss the spectral dependence of these near-fields and show that different spatial distributions are observed, depending which plasmon resonance is excited in the particle.

Full Text

Duke Authors

Cited Authors

  • Kottmann, JP; Martin, OJ; Smith, DR; Schultz, S

Published Date

  • April 2001

Published In

Volume / Issue

  • 202 / Pt 1

Start / End Page

  • 60 - 65

PubMed ID

  • 11298871

Pubmed Central ID

  • 11298871

Electronic International Standard Serial Number (EISSN)

  • 1365-2818

International Standard Serial Number (ISSN)

  • 0022-2720

Digital Object Identifier (DOI)

  • 10.1046/j.1365-2818.2001.00866.x


  • eng