{
  "abstract": "Terahertz (THz) metasurface absorbers have emerged as promising platforms for biomedical sensing due to their high-quality (Q) resonances and strong sensitivity to dielectric variations in biological tissues. Conventional single-band designs are effective only over a narrow frequency range, reducing detection reliability and increasing false positives. This study introduces a polarization-independent multiband metasurface absorber (MSA) with good angular stability for label-free terahertz biosensing applications. The structure features a dual-metallic split-ring resonator with a continuous backside ground plane, arranged in a compact metal-dielectric-metal (MDM) pattern. The proposed absorber exhibits six absorption peaks with near-unity (> 98%) absorption at 1.80, 2.89, 4.65, 4.84, 5.12, and 5.84 THz. Furthermore, a Q-factor of 177, along with narrow full-width at half-maximum (FWHM) values, ensures exceptional spectral selectivity. The sensor exhibits sensitivities of up to 2.92 THz/RIU and 8 THz/RIU for refractive index ranges corresponding to reported cancer- and malaria-related biological samples, respectively. The resonances enhance light–matter interactions and improve refractive-index sensing performance through stronger electromagnetic field confinement. The proposed design provides a simple, high-Q, multiband platform for THz biosensing applications and is compatible with future microfluidic integration.",
  "abstract_shown": true,
  "affiliations": [
    "Institute for Mathematical Research (INSPEM), Universiti Putra Malaysia (UPM)",
    "Department of Electrical Engineering, College of Engineering, Imam Mohammad Ibn Saud Islamic University (IMSIU)",
    "Interdisciplinary Research Center for Sustainable Energy Systems, King Fahd University of Petroleum & Minerals",
    "Strategic Research Institute (SRI), Asia Pacific University, Taman Teknologi Malaysia"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Abdulrahman Ahmed Ghaleb Amer"
    },
    {
      "affs": [
        1
      ],
      "name": "Yosef T. Aladadi"
    },
    {
      "affs": [
        0
      ],
      "name": "Aduwati Sali"
    },
    {
      "affs": [
        0
      ],
      "name": "Shaiful Jahari Hashim"
    },
    {
      "affs": [
        2
      ],
      "name": "Ali Ahmed Salem"
    },
    {
      "affs": [
        1
      ],
      "name": "Zaid Ahmed Shamsan"
    },
    {
      "affs": [
        0
      ],
      "name": "Muhammad Zamir Mohyedin"
    },
    {
      "affs": [
        3
      ],
      "name": "A. J. A. Al-Gburi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0j5mkmy2hh44g.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-62405-6",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-62405-6",
  "id": "0j5mkmy2hh44g",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://doi.org/10.1038/s41598-026-62405-6",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "Q"
    ],
    [
      "lcc",
      "R"
    ],
    [
      "openalex",
      "2504|Metamaterials and Metasurfaces Applications"
    ]
  ],
  "openalex": "W7169711297",
  "pdf_url": "https://www.nature.com/articles/s41598-026-62405-6_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "Nature Portfolio",
  "ris": "https://research.draconitic.com/paper/0j5mkmy2hh44g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:45:48Z",
      "native_id": "d2df0a16426c46ac8eec981e27e5b020",
      "source": "doaj",
      "url": "https://doi.org/10.1038/s41598-026-62405-6"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Metamaterials and Metasurfaces Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "High Q-factor multiband terahertz metasurface biosensor for biomedical refractive index sensing: a numerical study",
  "title_text": "High Q-factor multiband terahertz metasurface biosensor for biomedical refractive index sensing: a numerical study",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:48Z",
  "url": "https://research.draconitic.com/paper/0j5mkmy2hh44g",
  "venue": "Scientific Reports",
  "versions": []
}