Feb. 06, 2012
Conventional imaging devices are limited in their resolution and, hence, restrict the insights into structures smaller than the wavelength. Near-field microscopy overcomes this limitation by probing evanescent fields resulting in a wavelength-independent resolution. A superlens is a planar device, which transforms these fields to an image plane. We study such lenses for the infrared based on perovskite oxides, which might be applicable to imaging of highly-damped samples e.g. in liquids.