Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 45, Issue 23, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/45/23/235106
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Funding
- NSFC [61131005, 61021061, 11028409]
- 'New Century Excellent Talent Foundation' [NCET-11-0068]
- Sichuan Youth S T foundation [2011JQ0001]
- Sichuan International S&T Cooperation Program [2010HH0026]
- Fundamental Research Funds for the Central Universities [ZYGX2010J034]
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A tunable hybrid metamaterial absorber (MA) in the microwave band was designed, fabricated and characterized. The hybrid MA was realized by incorporating a VO2 film into the conventional resonant MA. By thermally triggering the insulator-metal phase transition of the VO2 film, the impedance match condition was broken and a deep amplitude modulation of about 63.3% to the electromagnetic wave absorption was achieved. A moderate blue-shift of the resonance frequency was observed which is promising for practical applications. This VO2-based MA exhibits many advantages such as strong tunability, frequency agility, simple fabrication and ease of scaling to the terahertz band.
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