GRAPHENE

WHAT IS GRAPHENE?

Graphene is a single layer of carbon atoms bounded together in a repeating pattern of hexagons. Since its just one – atom thick, it is considered to be a two dimensional material. Due to the strength of the carbon bonds, graphene is the strongest material ever discovered!

NOBEL PRIZE

Theoretically, people have known about graphene for decades. In fact graphene history begins with the study of graphite structure in the first half of the twentieth century. Single-layer carbon foils were described in 1962 by Hanns-Peter Boehn, who coined the term “graphene”. Graphene was first isolated in 2004. For this achievement Andre Geim and Konstantin Novoselov received a Nobel Prize in 2010.

Properties

  • Structure: 2D crystalline allotrope of carbon
  • Young’s Modulus: ∼ 1 TPa
  • Electric properties: zero – gap semiconductor
  • Tensile strength: 130 GPa
    (steel ~0,350 GPa)
  • Optical properties: graphene is able to absorb 2,3% of a white light
  • Weight: 0,77 mg/m2
  • Thermal conductivity: 4840 to 5300 W/m*K
    (Ag – 429 W/m*K)
  • Resistance: 10 -3 Ω*cm (Cu 1,7*10-6 Ω*cm)
  • High capacity of gas sorption
  • Electron mobility: 200000 cm2*V-1*s-1

Production methods

At the moment there are two main methods to produce large-area graphene:

  • Chemical Vapour Deposition (CVD)
  • Metallurgical (HSMG®)

Potencial applications

  • Aerospace
  • Automotive industry
  • Sensors
  • Electronics
  • Composites
  • Filtration membranes
  • Coatings
  • Energy storage
  • Touchscreens (for LCD Or OLED displays)
  • Sports
  • And many, many more!