Citation
A. Grbic, R. Merlin, E. M. Thomas and M. F. Imani, “Near-Field Plates: Metamaterial Surfaces/Arrays for Subwavelength Focusing and Probing,” in Proceedings of the IEEE, vol. 99, no. 10, pp. 1806-1815, Oct. 2011, doi: 10.1109/JPROC.2011.2106191.
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.
