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Published on: March 17, 2023
Flexible and Transparent Pressure/Temperature Sensors Based on Ionogels with Bioinspired Interlocked Microstructures
Youqun Xu1, Liangren Chen1, Jianwen Chen1
1College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
Researchers developed a flexible, transparent skin-like sensor inspired by natural skin. This bio-inspired sensor offers advanced pressure, temperature, and strain detection, along with antibacterial properties for wearable electronics.
Area of Science:
- Materials Science
- Biomimetics
- Wearable Technology
Background:
- Natural skin's epidermal-dermal interface inspires advanced material design.
- Ionogels offer unique properties for flexible electronics.
Purpose of the Study:
- To design a flexible, transparent, and multifunctional skin-like sensor.
- To leverage bioinspired microstructures for enhanced sensing capabilities.
- To incorporate antibacterial properties for wearable applications.
Main Methods:
- Fabrication of an interlocked hexagonal microcolumn array using ionogels (ionic liquids and thermoplastic polyurethane).
- Utilizing laser-etched silicon wafers for precise microstructuring.
- Characterization of pressure, temperature, and strain sensing performance.
Main Results:
- Achieved a transparent (94.2%) and flexible sensor with an ultralow pressure detection limit (∼10 Pa) and ultrafast response (∼24 ms).
- Demonstrated high-performance temperature sensing (detecting 0.1 °C changes) due to ionic liquid properties.
- Successfully utilized the sensor for strain detection (0.1-10%) and exhibited intrinsic antibacterial functionality.
Conclusions:
- The bioinspired interlocked ionogel sensor exhibits excellent multi-sensing capabilities (pressure, temperature, strain) and antibacterial properties.
- This novel manufacturing strategy yields transparent, flexible, and antimicrobial e-skin sensors.
- The developed e-skin technology holds potential for future advancements in wearable electronics and bio-integrated devices.
