Theoretical investigation of a tunable vanadium dioxide-based metastructure for ultra-wideband absorption and linear-to-circular polarization conversion across triple-octave frequencies

2025/01/01 by Shuo Dai, Si-Yuan Liao, Jun-Rui Pan +1 · 1 voice
Engineering · Materials Science · #Advanced Fiber Optic Sensors #Advanced Antenna and Metasurface Technologies #Silicone and Siloxane Chemistry

paper · doi:10.1039/d5nr00490j

openalex publication_date 2025/01/01 · openalex created_date 2025/03/27 · openalex updated_date 2026/07/25

Abstract

, the MS is shown to operate as a converter tripling the octave frequency in linear-to-circular polarization, with an axial ratio below 3 dB across the frequency ranges of 0.95-1.68 THz and 2.25-4.49 THz, corresponding to relative bandwidths of 55.51% and 66.27%. Remarkably, the polarization conversion in the insulating state exhibits tripling octave frequency characteristics, with a fundamental bandwidth spanning 0.95-1.49 THz and a tripling octave frequency bandwidth spanning 2.85-4.48 THz. The MS can switch between distinct functionalities within the terahertz regime, offering significant potential for applications such as spectral analysis, signal encryption, stealth material preparation, and other advanced terahertz technologies.

Citations

• Partition Layout Loading of Frequency Selective Surface Absorbers on the Curved Surfaces for the Significant RCS Reduction

Discussions

• Nanoscale Issue 20's outside front cover features a 'Theoretical investigation of a tunable vanadium dioxide-based metastructure for ultra-wideband absorption and linear-to-circular polarization conve [bsky, 0 points, 0 comments]