A Printed Xi-Shaped Left-Handed Metamaterial on Low-Cost Flexible Photo Paper

• Main Authors: Farhad Bin Ashraf, Touhidul Alam, Mohammad Tariqul Islam
• Format: Article
• Language: English
• Published: MDPI AG 2017-07-01
• Series: Materials
• Subjects: double negative; flexibility; inkjet printing; metamaterial; nanoparticle ink technology; paper substrate
• Online Access: https://www.mdpi.com/1996-1944/10/7/752

A Xi-shaped meta structure, has been introduced in this paper. A modified split-ring resonator (MSRR) and a capacitive loaded strip (CLS) were used to achieve the left-handed property of the metamaterial. The structure was printed using silver metallic nanoparticle ink, using a very low-cost photo paper as a substrate material. Resonators were inkjet-printed using silver nanoparticle metallic ink on paper to make this metamaterial flexible. It is also free from any kind of chemical waste, which makes it eco-friendly. A double negative region from 8.72 GHz to 10.91 GHz (bandwidth of 2.19 GHz) in the X-band microwave spectra was been found. Figure of merit was also obtained to measure any loss in the double negative region. The simulated result was verified by the performance of the fabricated prototype. The total dimensions of the proposed structure were 0.29 λ × 0.29 λ × 0.007 λ. It is a promising unit cell because of its simplicity, cost-effectiveness, and easy fabrication process.