Stretchable polymer light-emitting device shows promise in biomedical applications

Aug. 10, 2011
Stretchable electronics, which contain a discrete LED chip interconnected with stretchable electrodes, show promise for use in a wide range of applications, including minimally invasive biomedical devices that can move with the body.

Stretchable electronics, which contain a discrete LED chip interconnected with stretchable electrodes, show promise for use in a wide range of applications, including minimally invasive biomedical devices that can move with the body.

Researchers at the UCLA Henry Samueli School of Engineering and Applied Science (Los Angeles, CA) have demonstrated for the first time an intrinsically stretchable polymer light-emitting device by developing a simple process to fabricate the transparent devices using single-walled carbon nanotube polymer composite electrodes. The interpenetrating networks of nanotubes and the polymer matrix in the surface layer of the composites lead to low sheet resistance, high transparency, high compliance and low surface roughness.

Recently published in the journal Advanced Materials, the metal-free devices can be linearly stretched up to 45% and the composite electrodes can be reversibly stretched by up to 50% with little change in sheet resistance.

Because the devices are fabricated by roll lamination of two composite electrodes that sandwich an emissive polymer layer, they uniquely combine mechanical robustness and the ability for large-strain deformation, due to the shape-memory property of the composite electrodes. This development will provide a new direction for the field of stretchable electronics.

The research was supported by the National Science Foundation.

Sponsored Recommendations

Brain Computer Interface (BCI) electrode manufacturing

Jan. 31, 2025
Learn how an industry-leading Brain Computer Interface Electrode (BCI) manufacturer used precision laser micromachining to produce high-density neural microelectrode arrays.

Electro-Optic Sensor and System Performance Verification with Motion Systems

Jan. 31, 2025
To learn how to use motion control equipment for electro-optic sensor testing, click here to read our whitepaper!

How nanopositioning helped achieve fusion ignition

Jan. 31, 2025
In December 2022, the Lawrence Livermore National Laboratory's National Ignition Facility (NIF) achieved fusion ignition. Learn how Aerotech nanopositioning contributed to this...

Nanometer Scale Industrial Automation for Optical Device Manufacturing

Jan. 31, 2025
In optical device manufacturing, choosing automation technologies at the R&D level that are also suitable for production environments is critical to bringing new devices to market...

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!