{
  "abstract": "Optical metamaterials provide a versatile platform for manipulating the amplitude, phase, and polarization of light at subwavelength scales and are therefore attractive for compact polarization-control devices. However, simultaneously realizing broadband polarization-selective absorption and transmission with bidirectional operation remains challenging. Here, we propose a bidirectional mid-infrared polarization-selective metamaterial comprising multilayer strip resonators integrated with a composite Au grating. For x-polarized incidence, the final bidirectional structure maintains an absorptance above 80% from 3.95 to 12.15 μm, with an average absorptance of 90.4%. For the orthogonal y-polarized incidence, the average transmittance reaches approximately 94% over the same spectral range. The device exhibits broadband polarization selectivity, with average absorption and transmission extinction ratios of 16.5 dB and 42.6 dB, respectively. Electromagnetic-field and structural analyses indicate that the broadband x-polarized absorption is associated with multiple localized resonances together with lattice- and Fabry–Pérot-cavity-related contributions, whereas the high y-polarized transmission is primarily enabled by the polarization-selective response of the Au grating. The symmetric configuration preserves these complementary polarization responses for illumination from either side, providing a route toward broadband multifunctional polarization control in the mid-infrared.",
  "abstract_shown": true,
  "affiliations": [
    "School of Intelligence Science and Technology, Nanjing University of Science and Technology, Nanjing 210094, China",
    "Jiangsu Fasten Optoelectronics Technology Co., Ltd., Jiangyin 214400, China",
    "School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China",
    "Physical Department, Changchun University of Science and Technology, Changchun 130012, China",
    "School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Zheng Qin",
      "orcid": "0000-0002-6016-1020"
    },
    {
      "affs": [
        2
      ],
      "name": "Yongzhou Zhao"
    },
    {
      "affs": [
        0
      ],
      "name": "Yutong Zhou"
    },
    {
      "affs": [
        3
      ],
      "name": "Haihong Yu"
    },
    {
      "affs": [
        4
      ],
      "name": "Yijun Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/028wg6gt1jbqq.bib",
  "cited_by": 0,
  "doi": "10.3390/nano16211348",
  "fulltext_url": null,
  "id": "028wg6gt1jbqq",
  "issns": [
    "2079-4991"
  ],
  "landing_url": "https://www.mdpi.com/2079-4991/16/21/1348",
  "language": null,
  "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": [
    [
      "openalex",
      "2504|Metamaterials and Metasurfaces Applications"
    ]
  ],
  "openalex": "W7223566142",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/028wg6gt1jbqq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:45Z",
      "native_id": "10.3390/nano16211348",
      "source": "crossref",
      "url": "https://www.mdpi.com/2079-4991/16/21/1348"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Metamaterials and Metasurfaces Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Bidirectional Mid-Infrared Metamaterial with Ultrabroadband Polarization-Selective Absorption and Transmission",
  "title_text": "Bidirectional Mid-Infrared Metamaterial with Ultrabroadband Polarization-Selective Absorption and Transmission",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:45Z",
  "url": "https://research.draconitic.com/paper/028wg6gt1jbqq",
  "venue": "Nanomaterials",
  "versions": []
}