NanoBiotechnology

, 3:148 | Cite as

Electrodynamic Analysis of Near-Field Enhancement

Article

Abstract

The paper reviews computational models for plasmonic field enhancement, especially with applications to tip-enhanced scanning near-field optical microscopy (SNOM). Both plasmon-enhanced and scattering-type SNOM are considered. The importance of full electrodynamic analysis is emphasized: the electrostatic treatment is valid only if the size of the whole system, rather than its individual components (such as the apex of the tip or an individual particle in a cluster), is much smaller than the wavelength. Illustrative numerical results are included.

Keywords

near-field enhancement plasmonic resonances scanning near-field optical microscopy (SNOM) tip-enhanced microscopy superfocusing electrodynamic analysis computer simulation the finite element method the finite difference method flexible local approximation methods 

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Copyright information

© Humana Press Inc. 2009

Authors and Affiliations

  • Igor Tsukerman
    • 1
  • František Čajko
    • 1
  • Jianhua Dai
    • 1
  1. 1.Department of Electrical and Computer EngineeringThe University of AkronAkronUSA

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