Open AccessFlexible inkjet-printed metamaterial absorber for coating a cylindrical object
Author(s) -
Hyung Ki Kim,
K.S. Ling,
Kyeongseob Kim,
Sungjoon Lim
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.005898
Subject(s) - materials science , metamaterial , optics , coating , metamaterial absorber , fabrication , absorption (acoustics) , radius , resonator , optoelectronics , attenuation coefficient , polarization (electrochemistry) , tunable metamaterials , composite material , physics , computer science , chemistry , medicine , alternative medicine , pathology , computer security
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.