Spray-Coated Ultrathin and Porous Films for Physiological Sensing and Force Detection
Epidermal electronics employed on human skin for the long term require good breathability and nonforeign wearing. In this work, we combine phase separation and spray coating to fabricate a porous and ultrathin electrode within minutes as well as micrometer-scale porous pressure sensors. The resulting electrodes show a water vapor transmission rate of 18.4 mg·cm<sup>-2</sup>·h<sup>-1</sup>, sheet resistance of 5.2 Ω/sq, and thickness below 5 μm. The introduction of the biogel further reduced the electrode-skin impedance, which is lower than that of the commercial gel electrode, indicating that the electrode can have a high degree of conformal contact with the skin. The epidermal electronics prepared by this strategy exhibit an excellent performance in force sensing. Such results strongly prove the efficiency and practicality of the strategy.
Authors
- Chao Teng (ORCID: https://orcid.org/0000-0002-7097-2417)
- Yichen Ding (ORCID: https://orcid.org/0000-0002-6242-3506)
- Dongshan Zhou (ORCID: https://orcid.org/0000-0002-0038-7589)
- Tang Li (ORCID: https://orcid.org/0000-0001-8648-7398)
- Xiaoliang Wang (ORCID: https://orcid.org/0000-0001-7820-4706)
- Yan Zheng (ORCID: https://orcid.org/0000-0003-0824-7211)
Institutions
- Nanjing Tech University (CN)
- Shenzhen Polytechnic University (CN)
- Ingenierie des Materiaux polymeres (FR)
- The Polytechnic University of Japan (JP)
- Division of Materials Science and Engineering (AU)
- Nanjing University (CN)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2024-10-25
- DOI
- https://doi.org/10.1021/acsami.4c11179
- Citations
- 2
- Primary Topic
- Advanced Sensor and Energy Harvesting Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.37
Funders
- National Natural Science Foundation of China
- Science, Technology and Innovation Commission of Shenzhen Municipality
- National Key Research and Development Program of China