Home Research Scientists develop Wolverine-inspired self-healing, stretchable material

Scientists develop Wolverine-inspired self-healing, stretchable material


Hollywood inspired inventions aren’t a new thing and in the latest such invention, researchers have developed a Wolverine-inspired self-healing, stretchable material that can be electrically activated for use in number of applications.

A team of researchers including those from University of California, Riverside claim that their new material can be used to power artificial muscles and used to improve batteries, electronic devices and robots. The material is transparent and costs very less to make and can be produced easily. The soft rubber-like material can stretch 50 times its original length, researchers said.

After being cut, it can completely re-attach, or heal, in 24 hours at room temperature. In fact, after only five minutes of healing the material can be stretched two times its original length, researchers add.

This is the first time scientists have created an ionic conductor -materials that ions can flow through, that is transparent, mechanically stretchable and self-healing. The material could give robots the ability to self-heal after mechanical failure; extend the lifetime of lithium ion batteries used in electronics and electric cars and improve biosensors used in the medical field and environmental monitoring.

“Creating a material with all these properties has been a puzzle for years. We did that and now are just beginning to explore the applications,” said Chao Wang, assistant professor at University of California.

Self-healing materials repair damage caused by wear and extend the lifetime, and lower the cost, of materials and devices. Wang was inspired by Wolverine, the comic book character who has the ability to self-heal.

Ionic conductors are a class of materials with key roles in energy storage, solar energy conversion, sensors and electronic devices. Conventionally, self-healing polymers make use of non-covalent bonds, which creates a problem because those bonds are affected by electrochemical reactions that degrade the performance of the materials.

Wang helped solve that problem by using a mechanism called ion-dipole interactions, which are forces between charged ions and polar molecules that are highly stable under electrochemical conditions. He combined a polar, stretchable polymer with a mobile, high-ionic-strength salt to create the material with the properties the researchers were seeking.

Researchers at the University of Colorado, Boulder in the US demonstrated that the material could be used to power a so-called artificial muscle, also called dielectric elastomer actuator.

The research was published in the journal Advanced Material.