A near zero refractive index metamaterial for electromagnetic invisibility cloaking operation

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The paper reveals the design of a unit cell of a metamaterial that shows more than 2 GHz wideband near zero refractive index (NZRI) property in the C-band region of microwave spectra. The two arms of the unit cell were splitted in such a way that forms a near-pi-shape structure on epoxy resin fiber (FR-4) substrate material. The reflection and transmission characteristics of the unit cell were achieved by utilizing finite integration technique based simulation software. Measured results were presented, which complied well with simulated results. The unit cell was then applied to build a single layer rectangular-shaped cloak that operates in the C-band region where a metal cylinder was perfectly hidden electromagnetically by reducing the scattering width below zero. Moreover, the unit cell shows NZRI property there. The experimental result for the cloak operation was presented in terms of S-parameters as well. In addition, the same metamaterial shell was also adopted for designing an eye-shaped and triangular-shaped cloak structure to cloak the same object, and cloaking operation is achieved in the C-band, as well with slightly better cloaking performance. The novel design, NZRI property, and single layer C-band cloaking operation has made the design a promising one in the electromagnetic paradigm.

Original languageEnglish
Pages (from-to)4790-4804
Number of pages15
JournalMaterials
Volume8
Issue number8
DOIs
Publication statusPublished - 2015

Fingerprint

Metamaterials
Refractive index
Epoxy Resins
Scattering parameters
Epoxy resins
Metals
Microwaves
Scattering
Fibers
Substrates

Keywords

  • Cloak
  • Metamaterial
  • Near zero refractive index (NZRI)

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A near zero refractive index metamaterial for electromagnetic invisibility cloaking operation. / Islam, Sikder Sunbeam; Faruque, Mohammad Rashed Iqbal; Islam, Mohammad Tariqul.

In: Materials, Vol. 8, No. 8, 2015, p. 4790-4804.

Research output: Contribution to journalArticle

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