A dynamically tunable graphene-VO₂ terahertz metamaterial absorber for multi-band frequency selection and broadband absorption

Key Points

• Absorption peaks at multiple frequency bands indicate robust multi-band performance.
• Key evidence shows over 90% absorption efficiency across terahertz frequencies, enhancing material functionality.
• The assessment employed a dynamically tunable graphene–VO₂ structure to achieve effective absorption.
• Findings highlight significant potential for applications in telecommunications and optical devices.