Autonomous and Ultrasensitive Low-Power Metal Oxide Nanofiber Gas Sensor for Source Tracking and Localization
Current toxic gas detection methods in industrial and environmental settings are limited by their reliance on manual monitoring and stationary sensors. Here, we present an autonomous mobile gas sensing system offering real-time monitoring and precise gas source localization without the need for human intervention. Room-temperature gas sensors based on high specific surface area indium gallium zinc oxide nanofibers (IGZO NFs) are developed, which exhibit low power consumption (∼0.5 mW), exceptional sensitivity (∼1290% ppb<sup>-1</sup>), and a low detection limit of 20 ppb for toxic NO<sub>2</sub>. When integrated into an autonomous mobile platform and supported by adaptive biologically inspired algorithms, the system exhibits a source localization efficiency of ∼1.5 m min<sup>-1</sup>, offering a remote, scalable, and efficient solution for detecting and localizing toxic gas leaks.
Authors
- Tobin Jay Marks (ORCID: https://orcid.org/0000-0001-8771-0141)
- Chenhua Wang
- Litao Sun (ORCID: https://orcid.org/0000-0002-2750-5004)
- Binghao Wang (ORCID: https://orcid.org/0000-0002-9631-6901)
- Qing Ma (ORCID: https://orcid.org/0000-0003-3125-3513)
- Enbo Xue (ORCID: https://orcid.org/0009-0006-6955-1806)
- Shihang Cao (ORCID: https://orcid.org/0009-0000-8252-2029)
- Limei Liu (ORCID: https://orcid.org/0000-0002-8606-0009)
- Haoyang Wang (ORCID: https://orcid.org/0009-0002-1700-5919)
- Yao Tang (ORCID: https://orcid.org/0000-0002-6603-1761)
- Xuyang Feng
- Ziyun Le
Institutions
- Southeast University (CN)
- Yangzhou University (CN)
Publication Details
- Journal
- ACS Sensors
- Published
- 2025-04-15
- DOI
- https://doi.org/10.1021/acssensors.4c03676
- Citations
- 3
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 2.19
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Southeast University
- Jiangsu Planned Projects for Postdoctoral Research Funds
- National Key Research and Development Program of China
- Air Force Office of Scientific Research