An analytical investigation of near-field plates

Mohammadreza F. Imani, Anthony Grbic

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


This paper describes an analytical approach to modeling near-field plates, which are non-periodic grating-like structures that can focus electromagnetic waves to subwavelength dimensions. The analysis provides additional insight into the operation and design of such plates that focus cylindrical waves to subwavelength resolutions. Explicit expressions for the current density induced on the plate and its impedance profile are derived. The analytical expressions are validated numerically.

Original languageEnglish (US)
Pages (from-to)104-111
Number of pages8
Issue number2-3
StatePublished - Aug 2010
Externally publishedYes


  • Diffraction limit
  • Evanescent waves
  • Focusing
  • Metamaterials
  • Near-field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Modeling and Simulation
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Electrical and Electronic Engineering


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