Experimental demonstration of sub-wavelength image channeling using capacitively loaded wire medium

TL;DR

This paper experimentally demonstrates sub-wavelength imaging using a capacitively loaded wire medium, achieving resolution of about one-tenth of the wavelength with minimal impact from losses.

Contribution

It introduces a capacitively loaded wire medium that enables sub-wavelength image channeling with a dense lattice, improving resolution beyond traditional limits.

Findings

Achieved λ/10 resolution in near-field imaging.

Losses reduce amplitude but not resolution.

Dense wire lattice enables sub-wavelength imaging.

Abstract

In this letter we experimentally demonstrate a possibility to achieve significant sub-wavelength resolution of a near-field image channeled through a layer of an electromagnetic crystal. An image having radius of $\lambda/10$ has been realized using an electrically dense lattice of capacitively loaded wires. The loading allows to reduce the lattice period dramatically so that it is only a small fraction of the free-space wavelength. It is shown that losses in the structure only decrease the total amplitude of the image, but do not influence the resolution.