Journal
PROCEEDINGS OF THE IEEE
Volume 99, Issue 10, Pages 1806-1815Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2011.2106191
Keywords
Diffraction limit; evanescent wave; focusing; metamaterials; near field
Categories
Funding
- Air Force Office of Scientific Research (AFOSR) [FA9550-08-1-0067]
- National Science Foundation (NSF) [ECCS-0747623]
- President Early Career Award for Scientists and Engineers [FA9550-09-1-0696]
- Multidisciplinary University Research Initiative [FA9550-06-01-0279]
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In this paper, we present a brief overview of nearfield 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.
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