High-Fidelity Bioelectrodes with Bidirectional Ion-Electron Transduction Capability by Integrating Multiple...

Area of Science:

• Bioelectronics
• Neuroscience
• Materials Science

Background:

• Bioelectronics integrates physiological activities with electronic devices, requiring high-performance bioelectrodes.
• Existing bioelectrodes face challenges in simultaneously achieving high-fidelity signal transduction, charge injection, strain resistance, and multifunctionality.

Purpose of the Study:

• To develop novel bioelectrodes with superior performance by merging multiple charge-transfer processes.
• To overcome limitations of current bioelectrodes for advanced bioelectronic applications.

Main Methods:

• Fabrication of bioelectrodes utilizing a novel strategy merging multiple charge-transfer processes.
• Design for isolating signal transduction from electron transportation to achieve strain insensitivity.

Main Results:

• The bioelectrodes demonstrate accurate ion-to-electron transduction for electrophysiological signal capture.
• Achieved dependable charge injection for neuromodulation and consistent electrode potential for artifact rejection and sensing.
• High transparency enables seamless integration with optoelectronics; strain-insensitive design is realized.

Conclusions:

• The novel bioelectrode fabrication strategy offers superior performance for bioelectronic applications.
• The developed bioelectrodes are suitable for multimodal bioelectronics, including optoelectronics.
• This approach provides a promising foundation for advancing various electrode materials and bioelectronic systems.