Graphene is a two-dimensional crystal. The common graphite is formed by stacking layers of planar carbon atoms in an orderly arrangement in a honeycomb shape. The force between the layers of graphite is weak and it is easy to peel off each other to form a thin layer. Graphite flakes.

Two-dimensional carbon nanomaterial graphene

Graphene is a two-dimensional carbon nanomaterial with a hexagonal honeycomb lattice composed of carbon atoms and sp² hybrid orbitals.

What kind of material is graphene? Graphene uses two-dimensional carbon nanomaterials. It has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery.

In fact, graphene originally exists in nature, but it is difficult to peel off a single-layer structure. Layers of graphene are stacked to form graphite, and 1 mm thick graphite contains about 3 million layers of graphene. A lightly stroked pencil on the paper may leave traces of several layers or even just one layer of graphene.

How was graphene discovered

In 2004, two scientists from the University of Manchester, Andre Geim and Konstantin Novoselov, discovered that they could use a very simple method to get more and more Thin graphite flakes. They peeled off the graphite flakes from the highly oriented pyrolytic graphite, then glued the two sides of the flakes to a special tape, and peeled off the tape to split the graphite flakes in two. By doing this continuously, the flakes became thinner and thinner. Finally, they got flakes made of only one layer of carbon atoms. This is what graphene is. Since then, new methods of preparing graphene have emerged endlessly. In 2009, Andrei · Gaim and Konstantin · Novoselov discovered the integer quantum Hall effect and the quantum Hall effect at room temperature in single-layer and double-layer graphene systems, respectively. It also won the 2010 Nobel Prize in Physics. Before the discovery of graphene, most physicists believed that thermodynamic fluctuations did not allow any two-dimensional crystals to exist at a finite temperature. Therefore, its discovery immediately shocked the academic community of condensed matter physics. Although both theoretical and experimental circles believe that a perfect two-dimensional structure cannot exist stably at non-absolute zero degrees, single-layer graphene can be prepared in experiments.

Graphene Research and Development

In fact, graphene originally exists in nature, but it is difficult to peel off a single-layer structure. Layers of graphene are stacked on top of each other to determine what kind of material graphene is. Graphene with a thickness of 1 mm contains about 3 million layers of graphene. A lightly stroked pencil on the paper may leave traces of several layers or even just one layer of graphene. In 2004, two scientists from the University of Manchester, Andre Geim and Konstantin Novoselov, discovered that they could use a very simple method to get more and more Thin graphite flakes. They peeled off the graphite flakes from the highly oriented pyrolytic graphite, then glued the two sides of the flakes to a special tape, and peeled off the tape to split the graphite flakes in two. Keep doing this, so the flakes get thinner and thinner, and finally, they get a flake made of only one layer of carbon atoms, which is graphene. They jointly won the 2010 Nobel Prize in Physics. The common powder production methods of graphene are mechanical peeling, oxidation-reduction, and SiC epitaxial growth. The thin film production method is chemical vapor deposition (CVD). Since then, new methods of preparing graphene have emerged endlessly. In 2009, Andrei · Gaim and Konstantin · Novoselov discovered the integer quantum Hall effect and the quantum Hall effect at room temperature in single-layer and double-layer graphene systems, respectively. It also won the 2010 Nobel Prize in Physics. Before the discovery of graphene, most physicists believed that thermodynamic fluctuations did not allow any two-dimensional crystals to exist at a finite temperature. Therefore, its discovery immediately shocked the academic community of condensed matter physics. Although both theoretical and experimental circles believe that a perfect two-dimensional structure cannot exist stably at non-absolute zero degrees, single-layer graphene can be prepared in experiments. On March 31, 2018, China’s first fully automated mass-produced graphene organic solar optoelectronic device production line was launched in Heze, Shandong. The project mainly produces graphene organic solar cells that can generate electricity under low light (hereinafter referred to as graphene OPV). The three major solar power problems of application limitation, sensitivity to angle, and difficulty in modeling are solved. On June 27, 2018, the China Graphene Industry Technology Innovation Strategic Alliance issued a newly formulated group standard "Guidelines for the Naming of Products Containing Graphene Materials." This standard specifies the naming method for new products related to graphene materials.

Summary: Graphene is the thinnest and strongest material found so far. It is thin because graphene is a two-dimensional crystal made of carbon atoms, with a thickness of only one atom. Although it is extremely thin, it is so dense that even the smallest atomic size helium cannot penetrate it. To learn more about graphene, please pay attention to graphene manufacturer Deyang Carbon Technology.