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Flexible Hygroscopic Electronics for Real-Time Moisture Sorption-Desorption Monitoring and Smart Humidity Regulation
Weiqing Yang1,2, Junyi Han1,2, Peng Xiao1,2
1State Key Laboratory of Advanced Marine Materials, Zhejiang Key Laboratory of Extreme-environmental Material Surfaces and Interfaces, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China.
Advanced Materials (Deerfield Beach, Fla.)
|February 3, 2026
Summary
Flexible hygroscopic electronics (FHE) offer real-time humidity monitoring and regulation. This innovation provides fast, stable moisture control and alerts for equipment protection.
Area of Science:
- Materials Science
- Electronics Engineering
- Environmental Monitoring
Background:
- Humidity control is vital for electronics, storage, and energy systems.
- Current methods for monitoring moisture dynamics are slow and lack in situ capabilities.
- Real-time tracking of water sorption/desorption is needed for smart humidity regulation.
Purpose of the Study:
- To develop flexible hygroscopic electronics (FHE) for simultaneous humidity regulation and real-time moisture monitoring.
- To overcome limitations of conventional gravimetric methods in speed, accuracy, and in situ detection.
- To engineer modular sensors for adjustable humidity control in various applications.
Main Methods:
- Development of a core-shell FHE system with a bio-based hygroscopic core and a conductive shell.
- Utilizing water-mediated resistive changes for monitoring sorption-desorption processes.
- Engineering modular array-based sensors for adjustable humidity control.
Main Results:
- FHE demonstrated a rapid hygroscopic response (∼2.1 s at 90% RH).
- Exceptional cycling stability and stable sorption-desorption properties over 50 cycles were achieved.
- Modular sensors enabled adjustable humidity control and rapid alerts, maintaining stable conditions in damaged enclosures for over 3.5 hours.
Conclusions:
- The developed FHE system enables simultaneous environmental moisture regulation and dynamic monitoring.
- This technology offers a solution for smart humidity regulation with fast response and high stability.
- The FHE system provides early warning for potential equipment seal risks through remote monitoring.
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