Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 122, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/s00339-015-9545-x
Keywords
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Funding
- National Natural Science Foundation of China [61331005, 11274389, 61471388, 61501497, 61501502]
- Innovation team of Shaanxi Province, China [2014KCT-05]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China (FANEDD) [201242]
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In this paper, the design of metamaterial absorbers is proposed based on QR coding and topology optimization. Such absorbers look like QR codes and can be recognized by decoding softwares as well as mobile phones. To verify the design, two lightweight wideband absorbers are designed, which can achieve wideband absorption above 90 % in 6.68-19.30 and 7.00-19.70 GHz, respectively. More importantly, polarization-independent absorption over 90 % can be maintained under incident angle within 55 degrees. The QR code absorber not only can achieve wideband absorption, but also can carry information such as texts and Web sites. They are of important values in applications such identification and electromagnetic protection.
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