title: Two-dimensional imaging by far-field superlens at visible wavelengths.
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.
authors.affiliation: 5130 Etcheverry Hall, NSF Nanoscale Science and Engineering Center, University of California, at Berkeley, Berkeley, California 94720, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Xiong
authors.forename: Zhaowei
authors.initials: Z
authors.lastname: Liu
authors.forename: Cheng
authors.initials: C
authors.lastname: Sun
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000465:Algorithms; D004563:Electrochemistry / Q000379:methods; D007090:Image Interpretation, Computer-Assisted; D007091:Image Processing, Computer-Assisted; D008670:Metals / Q000737:chemistry; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods*; D008962:Models, Theoretical; D053758:Nanoparticles; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics
chemical_list: D008670:Metals