{
  "abstract": "An electrically thin bilayer chiral metasurface is presented for dual resonant, same handedness circular-polarization-selective transmission in the X-band. The 11 × 11 mm2 connected unequal-arm unit cell produces forward right-handed circularly polarized (RHCP) circular dichroism (CD) maxima of 0.72 and 0.75 at 9.672 and 10.636 GHz within a common transmission window, with reciprocal backward left-handed circularly polarized (LHCP) selectivity and a complete CD null at 10.3 GHz. A controlled four-configuration comparison shows that the compound front–back transformation establishes chiral interlayer coupling, whereas unequal terminal paths enable the second modal contribution. Surface-current distributions identify a lower even mode, an intermediate mixed state, and an upper odd interlayer-coupled mode. A geometry-derived equivalent-circuit model reproduces the broadband full-wave transmission response, and free-space measurements of an aperture of 29.7 × 20.9 cm² validate the polarization-selective behavior. The demonstrated response supports passive circular-polarization-selective receiver front ends and provides a polarimetric sensing platform for non-contact CFRP assessment.",
  "abstract_shown": true,
  "affiliations": [
    "James Watt School of Engineering, University of Glasgow, Glasgow, UK",
    "School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK",
    "Microlynx Systems Ltd, Calgary, AB Canada",
    "School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad, Pakistan"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Muhammad Noman"
    },
    {
      "affs": [
        0
      ],
      "name": "Jalil Kazim",
      "orcid": "0000-0003-0319-0818"
    },
    {
      "affs": [
        1
      ],
      "name": "Adnan Zahid"
    },
    {
      "affs": [
        2
      ],
      "name": "Hassan T. Chattha",
      "orcid": "0000-0003-1017-1009"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "Farooq A. Tahir"
    },
    {
      "affs": [
        0
      ],
      "name": "Muhammad Imran"
    },
    {
      "affs": [
        0
      ],
      "name": "Qammer H. Abbasi",
      "orcid": "0000-0002-7097-9969"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8cne63gssyzzv.bib",
  "cited_by": 0,
  "doi": "10.1038/s44459-026-00101-7",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13727677/",
  "id": "8cne63gssyzzv",
  "issns": [
    "3059-4391"
  ],
  "landing_url": "https://doi.org/10.1038/s44459-026-00101-7",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "2504|Metamaterials and Metasurfaces Applications"
    ]
  ],
  "openalex": "W7225128790",
  "pdf_url": "https://www.nature.com/articles/s44459-026-00101-7.pdf",
  "pmcid": "PMC13727677",
  "pmid": "42978901",
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8cne63gssyzzv.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:23:31Z",
      "native_id": "PMC13727677",
      "source": "pmc",
      "url": "https://doi.org/10.1038/s44459-026-00101-7"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Metamaterials and Metasurfaces Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Dual resonant transmissive circular dichroism in a rotationally transformed chiral metasurface",
  "title_text": "Dual resonant transmissive circular dichroism in a rotationally transformed chiral metasurface",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T12:20:49Z",
  "url": "https://research.draconitic.com/paper/8cne63gssyzzv",
  "venue": "Npj Wireless Technology",
  "versions": []
}