Ultra-Broadband, Polarization-Irrelevant Near-Perfect Absorber Based on Composite Structure

Ultra-Broadband, Polarization-Irrelevant Near-Perfect Absorber Based on Composite Structure

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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 nanostructure and bottom multilayer, can MALAT1 inhibits the Wnt/β-catenin signaling pathway in colon cancer cells and affects cell proliferation and apoptosis further enhance the absorption at some wavelength where most of the energy is reflected or passes through in the device with a single structure.According to the simulation results, the device presents Understanding public attitudes toward restrictive voting laws in the United States a nearly perfect absorption in a wavelength range from 300 nm to 2000 nm.

The average absorptance in the wavelength range from 500 nm to 1400 nm exceeds 96%.This paper also provides a new idea for realizing perfect absorption, which is extensively used in sensing, controllable thermal emission, solar energy harvesting solar thermo-photovoltaic devices, and optoelectronic metrology.