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Updated: Apr 26, 2026

Graphene Coatings for Biomedical Implants

Graphene Coatings for Biomedical Implants

Published on: March 1, 2013

Graphene-based conformal devices.

Yong Ju Park¹, Seoung-Ki Lee, Min-Seok Kim

¹School of Electrical and Electronic Engineering, Yonsei University , Seoul 120-749, Korea.

|July 30, 2014

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Researchers developed ultrathin, flexible graphene devices that conform to uneven surfaces. These wearable electronics maintain stable performance under stress, paving the way for advanced applications.

Area of Science:

Materials Science
Electronics Engineering
Nanotechnology

Background:

Current bendable and stretchable electronics face limitations in achieving true conformality due to device inflexibility.
Developing devices that can adapt to complex, three-dimensional surfaces is crucial for next-generation wearable technology.

Purpose of the Study:

To fabricate ultrathin, graphene-based conformal and stretchable electronic devices.
To assess the flexibility, conformality, and electrical stability of these devices on convoluted surfaces.

Main Methods:

Fabrication of 70 nm thick graphene-based thin-film transistors and tactile sensors.
Device integration onto a substrate with a convoluted surface (animal hide).
Evaluation of bending stiffness, conformal coverage, and electrical performance under mechanical stress (bending, twisting).

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Main Results:

Demonstrated significantly lower bending stiffness in 70 nm thick graphene devices compared to previous reports.
Achieved excellent conformal coverage on an uneven animal hide surface without adhesives.
Observed stable electrical characteristics in ultrathin graphene devices on a 3D curved surface during repetitive bending and twisting.

Conclusions:

Ultrathin graphene devices offer unprecedented flexibility and conformality for wearable electronics.
The demonstrated technology shows significant promise for widespread adoption in various future applications.
This work advances the development of robust, adaptable electronic systems for complex environments.