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Original Research
Published 2 October 2026
A dual-tunable terahertz absorber using graphene-ZnO-VO 2 hybrid structure for quad-band absorption, broadband-narrowband switching, and refractive-index sensing
Chandan Tamrakar · Anil Kumar Soni · Shrawan Kumar Patel
Advanced Optical Technologies
doi 10.3389/aot.2026.1910513