A VO2-based metasurface switches from narrowband absorption (0.99 at 6.05 THz, FWHM 0.35 THz) to broadband absorption (FWHM 6.17 THz over 3.57-8.45 THz) while remaining polarization-insensitive.
Active Tuning from Narrowband to Broadband Absorbers Using a Sub-wavelength VO2 Embedded Layer
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2026 1verdicts
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Narrowband-to-broadband switchable and polarization-insensitive terahertz metasurface absorber enabled by phase-change material
A VO2-based metasurface switches from narrowband absorption (0.99 at 6.05 THz, FWHM 0.35 THz) to broadband absorption (FWHM 6.17 THz over 3.57-8.45 THz) while remaining polarization-insensitive.