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Smart facemask for wireless CO2 monitoring

Author

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  • P. Escobedo

    (University of Granada
    Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada)

  • M. D. Fernández-Ramos

    (Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada
    University of Granada)

  • N. López-Ruiz

    (University of Granada
    Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada)

  • O. Moyano-Rodríguez

    (University of Granada)

  • A. Martínez-Olmos

    (University of Granada
    Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada)

  • I. M. Pérez de Vargas-Sansalvador

    (Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada
    University of Granada)

  • M. A. Carvajal

    (University of Granada
    Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada
    University of Granada)

  • L. F. Capitán-Vallvey

    (Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada
    University of Granada)

  • A. J. Palma

    (University of Granada
    Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada
    University of Granada)

Abstract

The use of facemasks by the general population is recommended worldwide to prevent the spread of SARS-CoV-2. Despite the evidence in favour of facemasks to reduce community transmission, there is also agreement on the potential adverse effects of their prolonged usage, mainly caused by CO2 rebreathing. Herein we report the development of a sensing platform for gaseous CO2 real-time determination inside FFP2 facemasks. The system consists of an opto-chemical sensor combined with a flexible, battery-less, near-field-enabled tag with resolution and limit of detection of 103 and 140 ppm respectively, and sensor lifetime of 8 h, which is comparable with recommended FFP2 facemask usage times. We include a custom smartphone application for wireless powering, data processing, alert management, results displaying and sharing. Through performance tests during daily activity and exercise monitoring, we demonstrate its utility for non-invasive, wearable health assessment and its potential applicability for preclinical research and diagnostics.

Suggested Citation

  • P. Escobedo & M. D. Fernández-Ramos & N. López-Ruiz & O. Moyano-Rodríguez & A. Martínez-Olmos & I. M. Pérez de Vargas-Sansalvador & M. A. Carvajal & L. F. Capitán-Vallvey & A. J. Palma, 2022. "Smart facemask for wireless CO2 monitoring," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27733-3
    DOI: 10.1038/s41467-021-27733-3
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