Ultra-Broadband, Polarization-Irrelevant Near-Perfect Absorber Based on Composite Structure
This paper proposes a near-perfect absorption device based on a cross-shaped titanium nanostructure and a multilayered structure.The multilayered bottom structure consists of alternately SiO2 and Ti.The whole device is put on a TiN substrate.The coupling between cross-shaped titanium nanostructures, and that between the cross-shaped titanium nanost