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Title: Ultraviolet dielectric hyperlens with layered graphene and boron nitride
Authors: Chen, Hongsheng
Zhang, Baile
Wang, Junxia
Xu, Yang
Keywords: DRNTU::Engineering::Materials::Metallic materials
Issue Date: 2012
Source: Wang, J., Xu, Y., Chen, H., & Zhang, B. (2012). Ultraviolet dielectric hyperlens with layered graphene and boron nitride. Journal of Materials Chemistry, 22(31), 15863-15868.
Series/Report no.: Journal of materials chemistry
Abstract: The concept of hyperlens, as a novel transformation optics device, is a promising real-time super-resolution lens that can effectively transform evanescent waves into propagating waves and thus break the diffraction limit. However, previous hyperlens implementations usually adopted metal which would absorb most of the energy during light transmission and thus deteriorate imaging efficiency. Here we propose a novel hyperlens design based on dielectric layered graphene and h-boron nitride (h-BN) whose performance can surpass the counterpart design with metal. Our first-principle and Kramers–Kronig relation calculation shows that both layered graphene and layered h-BN exhibit strong anisotropic properties in ultraviolet spectrum regions, where their permittivity components perpendicular to the optic axis can be negative, while the components parallel to the optic axis can be positive. Based on the anisotropic properties, flat and cylindrical hyperlenses are designed and numerically verified with layered graphene at 1200 THz and layered h-BN at 1400 THz, respectively. Our work provides a dielectric hyperlens approach to overcome the diffraction limit at ultraviolet frequencies, which may find applications where dynamic imaging of subwavelength features at the molecular and cellular scales is desired.
DOI: 10.1039/c2jm32715e
Rights: © 2012 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication Journal of materials chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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