Near-field plates: Metamaterial surfaces/arrays for subwavelength focusing and probing

Anthony Grbic, Roberto Merlin, Erin M. Thomas, Mohammadreza F. Imani

Research output: Contribution to journalReview articlepeer-review

38 Scopus citations

Abstract

In this paper, we present a brief overview of near-field plates, which are nonperiodic grating-like surfaces/arrays that can focus electromagnetic field to subwavelength resolutions. The general properties of near-field plates are described, and the procedure used to design these devices is outlined. The design of two separate near-field plates is discussed in detail. One of the near-field plates produces a subwavelength line (1-D) focus while the other a spot (2-D) focus. Potential applications of near-field plates are also reviewed.

Original languageEnglish (US)
Article number5759721
Pages (from-to)1806-1815
Number of pages10
JournalProceedings of the IEEE
Volume99
Issue number10
DOIs
StatePublished - Oct 2011
Externally publishedYes

Keywords

  • Diffraction limit
  • evanescent wave
  • focusing
  • metamaterials
  • near field

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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