Polyelectrolyte elastomer-based ionotronic sensors with multi-mode sensing capabilities via multi-material 3D...

Area of Science:

• Materials Science
• Engineering
• Biomedicine

Background:

• Stretchable ionotronics are gaining traction for diverse applications.
• Current ionotronic sensors face limitations in sensing capabilities and stability due to device design and ingredient leakage.

Purpose of the Study:

• To design and fabricate architected, leakage-free ionotronic sensors with multi-mode sensing capabilities.
• To address the stability and functionality limitations of existing ionotronic devices.

Main Methods:

• Utilized Digital Light Processing (DLP)-based 3D printing.
• Synthesized a photo-polymerizable ionic monomer for a polyelectrolyte elastomer.
• Developed multi-material 3D printing for flexible structural design.

Main Results:

• Fabricated stretchable, transparent, ionically conductive, and leakage-resistant ionotronic sensors.
• Achieved robust interfaces and long-term stability in printed sensors.
• Demonstrated multi-mode sensing of tension, compression, shear, and torsion with tunable sensitivities.
• Created integrated sensors capable of simultaneous, interference-free perception of diverse mechanical stimuli.
• Successfully controlled a drone wirelessly using a sensing kit composed of these ionotronic sensors.

Conclusions:

• Multi-material 3D printing of leakage-free polyelectrolyte elastomers offers a new manufacturing approach for stretchable ionotronics.
• This technology simultaneously resolves stability and functionality deficiencies in ionotronic devices.
• The developed sensors pave the way for advanced engineering and biomedical innovations.