Near-Field Plates: Subdiffraction Focusing with Patterned Surfaces

by: Anthony Grbic, Lei Jiang, Roberto Merlin

Science, Vol. 320, No. 5875. (25 April 2008), pp. 511-513.

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摘要

Using a patterned, grating-like plate to control the electromagnetic near field, we demonstrate focusing well beyond the diffraction limit at [~] 1 gigahertz. The near-field plate consists of only capacitive elements and focuses microwaves emanating from a cylindrical source to a spot of size approx lambda/20 (half-power beamwidth), where lambda is the free-space wavelength. These plates will find application in antennas, beam-shaping devices, nonradiative wireless power-transfer systems, microscopy, and lithography. 10.1126/science.1154753

@article{citeulike:2720047, abstract = {Using a patterned, grating-like plate to control the electromagnetic near field, we demonstrate focusing well beyond the diffraction limit at [~] 1 gigahertz. The near-field plate consists of only capacitive elements and focuses microwaves emanating from a cylindrical source to a spot of size {approx} {lambda}/20 (half-power beamwidth), where {lambda} is the free-space wavelength. These plates will find application in antennas, beam-shaping devices, nonradiative wireless power-transfer systems, microscopy, and lithography. 10.1126/science.1154753}, author = {Grbic, Anthony and Jiang, Lei and Merlin, Roberto }, citeulike-article-id = {2720047}, doi = {10.1126/science.1154753}, journal = {Science}, keywords = {superresolution}, month = {April}, number = {5875}, pages = {511--513}, posted-at = {2008-04-26 04:11:22}, priority = {2}, title = {Near-Field Plates: Subdiffraction Focusing with Patterned Surfaces}, url = {http://dx.doi.org/10.1126/science.1154753}, volume = {320}, year = {2008} }

RIS record

TY - JOUR ID - citeulike:2720047 L3 - citeulike-article-id:2720047 TI - Near-Field Plates: Subdiffraction Focusing with Patterned Surfaces JF - Science VL - 320 IS - 5875 SP - 511 EP - 513 N2 - Using a patterned, grating-like plate to control the electromagnetic near field, we demonstrate focusing well beyond the diffraction limit at [~] 1 gigahertz. The near-field plate consists of only capacitive elements and focuses microwaves emanating from a cylindrical source to a spot of size {approx} {lambda}/20 (half-power beamwidth), where {lambda} is the free-space wavelength. These plates will find application in antennas, beam-shaping devices, nonradiative wireless power-transfer systems, microscopy, and lithography. 10.1126/science.1154753 KW - superresolution AU - Grbic, Anthony AU - Jiang, Lei AU - Merlin, Roberto PY - 2008/04/25/ UR - http://dx.doi.org/10.1126/science.1154753 ER -

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