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A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

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Topological supramolecular network enabled high-conductivity, stretchable organic bioelectronics.

Yuanwen Jiang¹, Zhitao Zhang¹, Yi-Xuan Wang^1,2

¹Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.

Science (New York, N.Y.)

|March 24, 2022

Summary

This summary is machine-generated.

Researchers developed robust, stretchable electronic devices using molecular engineering. These devices offer high conductivity and patternability for seamless integration with the human body, enabling precise biological signal collection and control.

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Area of Science:

Bioelectronic devices
Materials science
Organic electronics

Background:

Stretchable bioelectronic devices are crucial for human integration.
Combining mechanical robustness with electrical conductivity in these devices is challenging, especially at small scales.
Existing materials often compromise performance for flexibility or conductivity.

Purpose of the Study:

To develop intrinsically stretchable bioelectronic devices with high mechanical robustness and electrical conductivity.
To achieve fine-scale patterning for cellular-level integration.
To demonstrate the utility of these devices in biological applications.

Main Methods:

Molecular engineering using a topological supramolecular network.
Direct photopatterning down to the cellular scale.
Fabrication of intrinsically stretchable and conductive organic materials.

Main Results:

Achieved simultaneous high conductivity and crack-onset strain in a physiological environment.
Demonstrated direct photopatternability at the cellular scale.
Successfully collected stable electromyography signals and performed localized neuromodulation with single-nucleus precision.

Conclusions:

The developed molecular engineering strategy effectively decouples competing material properties.
The new materials enable robust, highly conductive, and precisely patterned bioelectronic devices.
These advancements pave the way for sophisticated, integrated bioelectronic systems for medical and research applications.