Abstract-Flexible inkjet-printed metamaterial absorber for coating a cylindrical object

Flexible inkjet-printed metamaterial absorber for coating a cylindrical object Hyung Ki Kim, Kenyu Ling, Kyeongseob Kim, and Sungjoon Lim  »View Author Affiliations

http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-23-5-5898

Optics Express, Vol. 23, Issue 5, pp. 5898-5906 (2015)
http://dx.doi.org/10.1364/OE.23.005898

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In this paper, a novel flexible inkjet-printed metamaterial absorber is proposed. The unit cell of the metamaterial is designed with a modified Jerusalem-cross ring resonator and is inkjet printed with silver nanoparticle ink on a flexible polymer film. All fabrication processes are performed using a commercial printer (EPSON WF-7011). The absorber’s flexibility and absorption performance are demonstrated by measuring the absorption ratio after coating the proposed absorber on a cylindrical object with a radius of 4.56 cm. An absorption rate exceeding 99% is achieved at 9.21 GHz for both flat and cylindrical surfaces. In addition, the cylindrical model attains an absorption rate higher than 96% for all polarization angles, and a high absorption rate of 95% is preserved until the incident angle is less than 30þ.

© 2015 Optical Society of America