{
  "abstract": "Flexible multi-gas sensor array has promising applications in wearable monitoring, environmental safety and intelligent sensing systems. In this work, a flexible 2 × 2 multi-gas sensor array based on region-functionalized laser-induced graphene (LIG) was developed for room-temperature gas detection and intelligent identification. MXene, MoS2, TiO2 and CuO were selectively introduced into different regions of a polyimide substrate, followed by femtosecond pulsed-laser direct writing to form four functionally differentiated LIG-based sensing units. The porous LIG network simultaneously serves as the conductive pathway, gas-adsorption interface, and sensing electrode, enabling the integration of multiple sensing functions within a single flexible platform. The gas-sensing results show that the array exhibits differential response characteristics toward NH3, H2S, acetone, and ethanol. LIG@MXene exhibited a pronounced and repeatable response toward NH3, whereas LIG@MoS2, LIG@TiO2, and LIG@CuO showed preferential responses toward H2S, acetone, and ethanol, respectively. The distinct response amplitudes and polarities of the four sensing channels provide multidimensional features for gas-condition identification. The device also maintained relatively stable NH3 sensing performance under mechanical bending, with a response retention of approximately 84.2% at a bending angle of 120°. Based on the multidimensional response signals of the four-channel array, a backpropagation neural network (BPNN) was employed for gas-condition identification. The overall correlation coefficient between the network outputs and the numerically encoded target labels reached 0.99974 for the single-gas dataset and 0.94894 for the mixed-gas dataset. This study provides an effective strategy for integrating region-specific material functionalization, flexible laser fabrication, multi-channel sensing, and intelligent gas identification within a single LIG-based sensing platform.",
  "abstract_shown": true,
  "affiliations": [
    "AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610092, China",
    "School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China",
    "Laboratory of Intelligent Microsystems, Beijing Information Science and Technology University, Beijing 100192, China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Wengan Wang"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Chaoqi Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Guiyong Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Peihao Xu"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Fan Wu"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Misheng Liang",
      "orcid": "0009-0007-6445-3761"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Rui You",
      "orcid": "0000-0003-2668-8221"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2h91dkz1bqhdc.bib",
  "cited_by": 0,
  "doi": "10.3390/nano16201321",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13708456/?tool=EBI",
  "id": "2h91dkz1bqhdc",
  "issns": [
    "2079-4991"
  ],
  "landing_url": "https://www.mdpi.com/2079-4991/16/20/1321",
  "language": "eng",
  "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",
      "2208|Gas Sensing Nanomaterials and Sensors"
    ]
  ],
  "openalex": "W7223013651",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13708456/pdf/?tool=EBI",
  "pmcid": "PMC13708456",
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/2h91dkz1bqhdc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:45Z",
      "native_id": "10.3390/nano16201321",
      "source": "crossref",
      "url": "https://www.mdpi.com/2079-4991/16/20/1321"
    },
    {
      "first_seen": "2026-10-30T12:21:31Z",
      "native_id": "PMC:PMC13708456",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13708456"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2079-4991",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Region-Functionalized Laser-Induced Graphene Sensor Array for Flexible and Intelligent Multi-Gas Detection",
  "title_text": "Region-Functionalized Laser-Induced Graphene Sensor Array for Flexible and Intelligent Multi-Gas Detection",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:21:31Z",
  "url": "https://research.draconitic.com/paper/2h91dkz1bqhdc",
  "venue": "Nanomaterials",
  "versions": []
}