Demonstration of negative refractive index with low-cost inkjet-printed microwave metamaterials

İBİLİ H., Karaosmanoglu B., Ergul O.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol.60, no.1, pp.187-191, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60 Issue: 1
  • Publication Date: 2018
  • Doi Number: 10.1002/mop.30942
  • Journal Name: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.187-191
  • Keywords: metamaterials, negative refractive index, microwave applications
  • Middle East Technical University Affiliated: Yes

Abstract

We present low-cost fabrications of inkjet-printed metamaterials that are resonating at microwave frequencies. A very low-cost setup involving commercial desktop printers loaded with silver-based inks is constructed and used to fabricate the metamaterials. We show that, despite the challenges in the low-cost fabrication processes, successful prints, and metamaterial samples can be obtained. A composite metamaterial design, which possesses a bandlimited transparency due to the induced negative refractive index, is fabricated and tested to demonstrate the feasibility of low-cost metamaterials with relatively complex geometries involving three-dimensional arrangements.