Wearable near field communication platform with a battery-free skin-interfaced tag for continuous temperature and impedance monitoring
Battery-free skin-interfaced sensing requires lightweight passive tags that can operate with wearable readers. Here, we report a flexible NFC platform combining a passive circular FPCB tag with a flexible TRF7970A-based reader for temperature and impedance monitoring. The tag integrates an RF430FRL152H transponder, skin-contact impedance electrodes, an analog front end for impedance measurement, and an STS41 temperature sensor. The tag maintained stable data readout within 25 mm, and preserved its response under 1 cm bending. A status-gated, duty-cycled ISO 15693 workflow enabled 0.1 Hz temperature and impedance updates with BLE smartphone visualization.
Authors
- Fuying Dong (ORCID: https://orcid.org/0000-0001-8962-6592)
- Simiao Niu (ORCID: https://orcid.org/0000-0003-1973-2204)
- Xinnian Jiang
- Jason Y. Fang
- Shreesha Hanagud
- Di Wu
- Chi Han
- Hunter Zhang
Institutions
- Rutgers, The State University of New Jersey (US)
- University of California, Merced (US)
Publication Details
- Journal
- MRS Communications
- Published
- 2026-08-20
- DOI
- https://doi.org/10.1557/s43579-026-01029-3
- Primary Topic
- Advanced Sensor and Energy Harvesting Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- American Heart Association
- New Jersey Health Foundation
- New Jersey Commission on Spinal Cord Research
- New Jersey Commission on Brain Injury Research