Web Release Date: October 5,
Two-Dimensional Imaging by Far-Field Superlens at Visible Wavelengths
5130 Etcheverry Hall, NSF Nanoscale Science and Engineering Center (NSEC), University of California, at Berkeley, Berkeley, California 94720
Received July 7, 2007
Revised September 5, 2007

Abstract:
We report that two-dimensional (2D) sub-diffraction-limited images can be theoretically reconstructed by a new metamaterial far-field superlens. The metamaterial far-field superlens, composed of a metal-dielectric multilayer and a one-dimensional (1D) subwavelength grating, can work over a broad range of visible wavelengths intrinsically. The imaging principle and the reconstruction process are described in detail. The 2D sub-diffraction-limited imaging ability enables more applications of the far-field superlens in optical nanoimaging and sensing.
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