Comment on: 'Wide incidence angle and polarization insensitive dual broad-band metamaterial absorber based on concentric split and continuous rings resonator structure'

Akhlesh Lakhtakia, Somak Bhattacharyya, Sambit Kumar Ghosh

Research output: Contribution to journalReview article

1 Scopus citations


The subject paper (Agrawal et al 2018 Mater. Res. Express 5, 115801) contains the incorrect assertion that both the effective relative permittivity and the effective relative permeability of an absorbing planar metamaterial structure can be purely real. The claim in the same paper that an optimized metamaterial structure is a broad-band absorber is also incorrect; instead, it is a broad-band linear-polarization converter.

Original languageEnglish (US)
Article number088002
JournalMaterials Research Express
Issue number8
StatePublished - May 22 2019


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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