title: Tuning the far-field superlens: from UV to visible.
abstract: A far-field optical superlens, which is able to form sub-diffraction- limited images in the far field at UV wavelength, was recently demonstrated. In current work we present two methods to tune the working wavelength from UV to visible by tuning either the permittivity of the surrounding medium or that of the metal. A practical design is provided for each method. The tunable far-field superlens enables possible applications of the far-field superlens in sub-diffraction-limited imaging and sensing over a wide range of wavelength.
authors: Yi
authors: Y
authors: Xiong
authors: Zhaowei
authors: Z
authors: Liu
authors: Stéphane
authors: S
authors: Durant
authors: Hyesog
authors: H
authors: Lee
authors: Cheng
authors: C
authors: Sun
authors: Xiang
authors: X
authors: Zhang