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Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management

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Autonomous self-healing supramolecular polymer transistors for skin electronics.

Ngoc Thanh Phuong Vo¹, Tae Uk Nam¹, Min Woo Jeong¹

¹Department of Chemical Engineering (Integrated Engineering Program), Kyung Hee University, Yongin, Gyeonggi, 17104, Korea.

Nature Communications

|April 23, 2024

Summary

Researchers developed self-healing, stretchable transistors for electronic skin. Using a unified supramolecular polymer matrix, these devices maintain electrical function after damage, advancing bio-integrated electronics.

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Area of Science:

Materials Science
Electronics Engineering
Polymer Chemistry

Background:

Skin-like field-effect transistors (FETs) are crucial for user-interactive electronic-skin applications.
Developing stretchable transistors with self-healing capabilities while preserving electrical performance is a significant challenge.

Purpose of the Study:

To create a stretchable polymer transistor with autonomous self-healing properties.
To demonstrate the feasibility of using a unified self-healing polymer matrix across all active layers of a transistor.

Main Methods:

Fabrication of transistors using a blend of electrically insulating supramolecular polymer with semiconducting polymers or metal nanoclusters.
Utilizing the same supramolecular self-healing polymer matrix for conductor, semiconductor, and dielectric layers.
Testing electrical performance and self-healing capabilities under strain.

Main Results:

The developed transistors exhibit autonomous self-healing capabilities.
Employing a unified supramolecular polymer matrix ensured adhesion and intimate contact between layers, facilitating charge transport post-healing.
Functional self-healing electronic circuits, including NAND and NOR gates and inverters, were successfully fabricated.

Conclusions:

This work presents a significant advancement in practical self-healing skin electronics.
The unified self-healing polymer matrix approach is effective for creating robust, repairable bio-integrated electronic devices.