Ultraviolet dielectric hyperlens with layered graphene and boron nitride

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Ultraviolet dielectric hyperlens with layered graphene and boron nitride

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dc.contributor.author Wang, Junxia
dc.contributor.author Xu, Yang
dc.contributor.author Chen, Hongsheng
dc.contributor.author Zhang, Baile
dc.date.accessioned 2012-10-17T05:45:36Z
dc.date.available 2012-10-17T05:45:36Z
dc.date.copyright 2012
dc.date.issued 2012-10-17
dc.identifier.citation 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.
dc.identifier.uri http://hdl.handle.net/10220/8791
dc.description.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.
dc.language.iso en
dc.relation.ispartofseries Journal of materials chemistry
dc.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: http://dx.doi.org/10.1039/c2jm32715e.
dc.subject DRNTU::Engineering::Materials::Metallic materials
dc.title Ultraviolet dielectric hyperlens with layered graphene and boron nitride
dc.type Journal Article
dc.contributor.school School of Physical and Mathematical Sciences
dc.identifier.doi http://dx.doi.org/10.1039/c2jm32715e
dc.description.version Accepted version

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