First Direct Proof of Stable Carbyne, The World’s Strongest Material

It's 40 times stronger than diamond, and it may be our next "miracle" material?

4. 11. 16 by Kathleen Riley
Liam Krauss/LLNL
Image by Liam Krauss/LLNL

Elusive Carbyne

Elemental carbon is extremely versatile, and scientists have long been able to create new carbon allotropes that make for super durable and multi-functioning materials—such as everyone’s favorite material, graphene.

The “carbon family” is one very resourceful family. But even with all these developments, carbyne remained elusive. In fact, it is the only form of carbon that has not been synthesized, even though researchers have been studying its properties for over 50 years.

The reason for this is that carbyne is extremely unstable. This one-dimensional carbon chain was first discovered in 1885 by Adolf von Baeyer, who even stated that carbyne would remain elusive, as its high reactivity would always lead to its immediate destruction.

So What Do We Do?

Carbyne’s mechanical properties are theorized to exceed all known materials. It’s assumed to be 2x stiffer than graphene, 40x stiffer than diamond, and have greater tensile strength than any other carbon material. With these kinds of properties, no wonder we’ve been trying to find ways to stabilize it.


And now, an international team of researchers have now found a way to mass produce carbyne.

The team took two layers of graphene, pressed them together, and rolled them into thin, double-walled carbon nanotubes. The tubes were then wrapped around the atoms. These nanotubes protect the carbyne chains from meeting imminent doom. Their research is published in the journal Nature Materials

SOURCE: Lei Shi/Faculty of Physics, University of Vienna

Before their discovery, the record-holding number of carbon atoms in one continuous chain was 100. Now, the record has been broken with an astounding 6,400 atoms utilizing this novel method – and the chain continues to be stable.

Also, carbyne’s electrical properties increase with its chain length. This means that researchers will be able to experiment with the material more effectively with success from the nanotubes. There is a huge wealth of possible applications using carbyne, and we’re excited to see what kinds of devices will arise with the delivery of this “miracle” material.


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