Scientists have found a way to structurally strengthen the graphene twice

Date:

2018-08-10 09:00:09

Views:

430

Rating:

1Like 0Dislike

Share:

Graphene is a two-dimensional modification of carbon with a thickness of a single atom with a crystal lattice of hexagonal form. Scientists are very interested in this material because it has several properties that make it practically universal and applicable in any committed production. And yet, this material theoretically is the most durable substance in the world.

Materials scientists from rice University in Houston (USA) has found a way to make graphene is significantly stronger than its original state. How? Thanks to the included in the structure of carbon nanotubes. The researchers also reported that been able to achieve in the three-dimensional structures based on graphene strength levels up to 10 times higher than the original figure. The results of the work done, scientists have shared in the journal ACS Nano.

"We have demonstrated the ability to grow graphene with integrated nanotubes. We call this graphene reinforcement. But in contrast to the same reinforcing concrete, where the reinforcement structure use steel rods, reinforcing graphene we use carbon nanotubes", — explains the head of research, James Tour, Professor of materials science and nano-engineering from rice University.

Despite its strength is 100 times the strength of steel, says Professor Tur, structural defects in the joints of the crystal lattice, and its subtlety can reduce samostojnost material. In practice, this means that graphene can not achieve its theoretical maximum strength. However, the integration of carbon nanotubes into the structure of graphene in its manufacturing process allows it to strengthen and decrease the possibility of cracks in its crystal lattice.

The production of reinforcement of graphene as follows. First, scientists have created nanotrubki by wrapping the substrate around the copper monatomic layer of carbon, and then began farming around graphene carbon nanotubes created using the process of plasma chemical deposition from the gas phase.

"This has led to the emergence of chemical covalent bonds between grafenauer layer and nanotubes", — said Tour.

From a practical point of view the new process for the production of structurally reinforced graphene does not give the material new properties, but very greatly increases the possibility of its application in the real world, because its actual effectiveness is often limited only to weak links in its structure.

"This is to do with graphene the things that originally, but wasn't possible due to likely defects", — said Tour.

In previous tests, scientists from rice University found that the rate of natural samostiynosti of conventional graphene is 4 MPa. Check reinforcement of graphene came in with an average samostojnost at the level of 10.7 MPa. As noted above, the difference becomes even more obvious when you use the created on the basis of graphene three-dimensional structures.

Next, the researchers want to think about how to scale production process, making your opening really practical and applicable in real conditions.

"We want to achieve scalability production to be enhanced graphene it was possible to create in large volumes. It could really change a lot of things. That is what we aspire," — added Tour.

Recommended

To grow human organs in pigs. What can go wrong?

For the ancient Greeks, a Chimera was an ominous creature — partly lion, partly goat and partly a snake. The first Chimera, which Juan Carlos Belmonte Izpisua created in 1992 was significantly less terrible: it consisted of embryonic mouse limbs graf...

Why the Universe has more matter than antimatter?

Why do we exist? This is perhaps the most profound question that may seem beyond elementary particle physics. But our new at the Large hadron Collider at CERN has brought us closer to the answer. To understand why we exist, you first have to go 13.8 ...

Chinese police began to train a cloned dog

In 2018, the Chinese company Sinogene Biotechnology cloned 7-year-old dog Huachana, who years earlier received awards from the Ministry of public security of the PRC for his contribution in solving murders. It is expected that its clone named Kunshun...

Comments (0)

This article has no comment, be the first!

Add comment

Related News

The rate of expansion of the Universe is a big question. Why physics can't cope?

the next time you eat a muffin with berries, think about what happened with blueberries in the dough as baking sweets. Blueberries were in the same place, but with the expansion of scones berries began to move away from each other...

LEGO started making blocks of plants

the Danish toy manufacturer LEGO, like other successful companies, today, cares about the environment. In the framework of this initiative, the company plans by 2030 to manufacture most of its products and packaging using environm...

CRISPR helped to create a new kind with one giant chromosome

At least the last 10 million years each yeast cell used for the production of beer or bread, had 16 chromosomes. But today, thanks to technology and masters CRISPR DNA from China, we have a live yeast… with one chromosome. F...