Researchers have termed Graphene as the best material for the manufacturing of bulletproof armors.
Graphene, which was first developed during laboratory trials in 2003, is a thin and nearly transparent material. It is a pure carbon which weighs 100 times lighter than steel.
Graphene is considered to be a remarkably stronger material as far as absorption of forces inflicted on it is concerned. It can conduct both heat and electricity.
The researchers at the University of Massachusetts in Amherst uncovered that the Graphene sheets could withstand bullets being shot on it.
For the study, the researchers took Graphene sheets of 10 layers and 100 layers thickness. Then silica micro-bullets were being shot at these sheets from 3,000 meters per second, which is thrice the speed of a normal rifle shot.
Researchers used lasers to keenly observe the way the bullets penetrated inside those sheets. The bullets’ kinetic energy was recorded both before and after they penetrated the graphene sheets and then both the data were compared.
Following deeper analysis with the help of electron microscopes, the research group found graphene’s dissipation of energy due to formation of a cone shape and cracking in various directions.
The test results showed graphene possessing an incredible ability to absorb forces, thanks to its strength and elasticity. It could also absorb two times as much force in comparison to Kevlar, a material which is currently used in armors. Moreover, graphene could also absorb 8 to 10 times more force than the normal steel.
The only drawback in graphene is that it is substantially stretched on a single impact. This leaves it vulnerable on the corresponding impacts. Researchers see the only solution to this problem is combination of graphene with other materials capable of preventing it from cracking.