Journal
JOURNAL OF APPLIED PHYSICS
Volume 118, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4926417
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Funding
- National Science Foundation [ECCS-0954765]
- Iowa Department of Transportation
- Iowa Highway Research Board
- China Scholarship Council
- U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering
- U.S. Department of Energy [DE-AC02-07CH11358]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0954765] Funding Source: National Science Foundation
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Reconfigurable metamaterials have great potential to alleviate complications involved in using passive metamaterials to realize emerging electromagnetic functions, such as dynamical filtering, sensing, and cloaking. This paper presents a new type of tunable meta-atoms in the X-band frequency range (8-12 GHz) toward reconfigurable metamaterials. The meta-atom is made of all flexible materials compliant to the surface of an interaction object. It uses a liquid metal-based split-ring resonator as its core constituent embedded in a highly flexible elastomer. We demonstrate that simple mechanical stretching of the meta-atom can lead to the great flexibility in reconfiguring its resonance frequency continuously over more than 70% of the X-band frequency range. The presented meta-atom technique provides a simple approach to dynamically tune response characteristics of metamaterials over a broad frequency range. (C) 2015 AIP Publishing LLC.
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