Resolution revival technique for subwavelength imaging

摘要

The method to achieve a high resolution of subwavelength features (to improve the contrast function) for a dark-field hyperlens - hyperbolic metamaterial slab possessing metallic properties at the interface - is developed. The technique requires the introduction of the phase difference between the objects to be resolved to have a destructive interference between the individual transmitted waves. One of the simple implementations of the technique is the usage of oblique background radiation. The results can be applied for the imaging of biological objects.