{
  "abstract": "Simultaneously enhancing and dynamically tuning second-harmonic generation (SHG) remains a major challenge in nanophotonics. Here, we propose a DAST-based organic all-dielectric nonlinear metasurface that combines symmetry-protected quasi-bound states in the continuum (quasi-BICs) with the strong second-order nonlinearity and electro-optic response of DAST. The quasi-BIC resonance enhances SHG efficiency by approximately 1000-fold. Applying a low voltage of 5 V significantly boosts the resonance Q-factor from 2876 to 4831. This enables an unprecedented maximum SHG conversion efficiency of 89.5% and a remarkable modulation depth of 275%. This work provides a versatile paradigm for active optical nonlinearities in organic metasurfaces, paving the way for advanced tunable nanophotonic devices.",
  "abstract_shown": true,
  "affiliations": [
    "Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yongjie Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Xiaomeng Cheng"
    },
    {
      "affs": [
        0
      ],
      "name": "Yarong Yang"
    },
    {
      "affs": [
        0
      ],
      "name": "Guanhong Li"
    },
    {
      "affs": [
        0
      ],
      "name": "Yu Jiang"
    },
    {
      "affs": [
        0
      ],
      "name": "Qiang Wang",
      "orcid": "0009-0008-7351-1844"
    },
    {
      "affs": [
        0
      ],
      "name": "Junchen Ke",
      "orcid": "0009-0004-3105-5167"
    },
    {
      "affs": [
        0
      ],
      "name": "Jinping Chen",
      "orcid": "0000-0003-4733-3788"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5590d1ag9jqs0.bib",
  "cited_by": 0,
  "doi": "10.3390/nano16191235",
  "fulltext_url": null,
  "id": "5590d1ag9jqs0",
  "issns": [
    "2079-4991"
  ],
  "landing_url": "https://www.mdpi.com/2079-4991/16/19/1235",
  "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": "W7214957376",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/5590d1ag9jqs0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:45Z",
      "native_id": "10.3390/nano16191235",
      "source": "crossref",
      "url": "https://www.mdpi.com/2079-4991/16/19/1235"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Metamaterials and Metasurfaces Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Electrically Tunable Second-Harmonic Generation in High-Q Organic DAST All-Dielectric Nonlinear Metasurfaces",
  "title_text": "Electrically Tunable Second-Harmonic Generation in High-Q Organic DAST All-Dielectric Nonlinear Metasurfaces",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:45Z",
  "url": "https://research.draconitic.com/paper/5590d1ag9jqs0",
  "venue": "Nanomaterials",
  "versions": []
}