Stretchable, Adhesive, and Bioinspired Visual Electronic Skin with Strain/Temperature/Pressure Multimodal...

Area of Science:

• Materials Science
• Sensor Technology
• Nanotechnology

Background:

• Developing single sensors for multiple stimuli is challenging.
• Existing sensors often lack simultaneous multi-stimuli detection without interference.

Purpose of the Study:

• To propose an adhesive multifunctional chromotropic electronic skin (MCES) for synchronous multi-stimuli perception.
• To demonstrate a "three-in-one" sensing unit distinguishing stain, temperature, and pressure.

Main Methods:

• Fabrication of an adhesive multifunctional chromotropic electronic skin (MCES).
• Integration of an interdigital capacitor for strain sensing (capacitance output).
• Utilizing a chameleon-inspired visual color change for temperature sensing.
• Incorporating a triboelectric nanogenerator for pressure sensing (voltage output) and material identification.

Main Results:

• The MCES device successfully distinguishes between stain, temperature, and pressure stimuli.
• Strain sensing demonstrated high linearity (R² = 0.998).
• Temperature sensing achieved via reversible multicolor switching, inspired by chameleons.
• Triboelectric nanogenerator enabled pressure detection and material species identification.

Conclusions:

• The proposed MCES offers a promising "three-in-one" sensing solution.
• This technology reduces complexity and production costs for multimodal sensors.
• Potential applications include soft robotics, prosthetics, and human-machine interaction.