If you want to say what new equipment is the most popular right now?

Everyone thinks of drones and robots.

What new technology is the hottest?

That is undoubtedly 3D printing.

What about new materials?

Many people think of graphene.

Its thickness is only one 200,000th of a human hair.

The strength is 200 times that of steel.

It is the thinnest, lightest and strongest material known in the world.

Who is graphene?

Lets come look!

What is graphene

First of all, it is composed of carbon atoms, which has the characteristics of both graphite and olefins. Graphite has a hexagonal three-dimensional layered structure, and olefin has a two-dimensional planar symmetric structure. To sum up, the authoritative definition is: Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms with sp² hybrid orbitals forming a hexagonal honeycomb lattice.

why it attracts so much attention

Graphene is ultra-thin, ultra-light, ultra-strong, and has many magical properties, so it is known as the "King of New Materials".

Ultra thin

1 mm thick flake graphite = 3 million sheets of graphene

Super light

Take a piece of graphene aerogel the size of a red date and place it on the animal hair. Animal hair can support graphene aerogel, with almost no deformation observed with the naked eye.

super strong

If a perfect graphene film could be made into a plastic wrap, and the graphene plastic wrap could be covered on a cup, it would take an elephant sitting on it to make it rupture, which would show how strong it is.

"Treasures" removed from tape

In 2004, two scientists from the University of Manchester, Andre Geim and Konstantin Novoselov, peeled off graphite sheets from highly oriented pyrolytic graphite, and then stuck both sides of the sheets on a special tape On the graphite sheet, tear off the tape and split the graphite sheet into two pieces. By continuing this operation, the sheet becomes thinner and thinner, and finally a sheet composed of only one layer of carbon atoms is obtained, which is graphene.

In fact, graphene already exists in nature. For example, 1 mm thick graphite contains approximately 3 million layers of graphene. When a pencil lightly scratches the paper, the traces left behind may be just a few layers of graphene. But because as early as 70 years ago, theoretical research showed that a perfect two-dimensional structure crystal cannot exist stably in an environment other than absolute zero, and it is difficult to peel off a single-layer structure. As a result, graphene was not discovered until 2004.

what's it for

Graphene has incredible physical properties that are revolutionary in a variety of fields. For example, it can be used as a touch screen because it is a transparent conductive film; it can also be used as an ultra-fast integrated circuit because the electrons in graphene run very fast, and the electron mobility at room temperature exceeds 10 times that of silicon materials; it is Lightweight and high-strength materials have very important application prospects in the aerospace field; its electromagnetic shielding properties can also be used to make stealth aircraft and stealth materials...

In addition to industrial applications, graphene can also be used in our daily necessities.

graphene down jacket

Graphene has a far-infrared heating function, which can continuously absorb radiant heat from the human body and release far-infrared heat. It does not require electricity and can provide a steady stream of warmth to the body. The graphene smart temperature-controlled heated down jacket is the first application among licensed products for the Beijing Winter Olympics.

New graphene mask

Graphene has good electrical and thermal conductivity, mechanical properties and mechanical properties. Adding it to other materials can greatly improve the thermal, electrical, mechanical, adsorption and other properties of the base material. Graphene masks are new protective masks formed by innovatively applying new graphene polypropylene melt-blown cloth materials in the key filter layer between the spunbond non-woven fabrics that make up ordinary masks. Compared with ordinary masks, the new graphene masks have the remarkable characteristics of stronger antibacterial properties, better breathability, and longer use time.

Graphene smart insole

Graphene insoles are smart insoles that incorporate pressure sensing technology. The core sensing unit is a sensor array composed of graphene functional materials. It can not only sense human gait information more accurately, but also monitor the pressure on the sole of the foot. The distribution and changes can meet the application needs of professional sports analysis, medical auxiliary diagnosis and so on.