journal article·2024-11-06

Spray-Coated Ultrathin and Porous Films for Physiological Sensing and Force Detection

Tang Li, Yichen Ding, Chao Teng, Yan Zheng, Xiaoliang Wang, Dongshan Zhou

ACS Applied Materials & Interfaces· Volume 16· Issue 44
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Abstract

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 –2 ·h –1, 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.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Tactile and Sensory Interactions · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Polymer Science and Engineering, State Key Laboratory of Coordination Chemistry, Key Laboratory of High Performance Polymer Material and Technology, MOE, School of Chemistry and Chemical Engineering

Nanjing University

Institute of Critical Materials for Integrated Circuits

Shenzhen Polytechnic University

Department of Polymer Science and Engineering, College of Materials Science and Engineering

Nanjing Tech University

Funding

National Key Research and Development Program of China · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Key Laboratory of High Performance Polymer Materials and Technology, Ministry of Education

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