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7/4/2016 by mdc
http://science.sciencemag.org/content/346/6213/1092.full?ijkey=mKLoqxYbY3NlY&...
Jae-Hwang Lee, et al., at Rice University in Houston, Texas, report that multilayer graphene is an exceptional anisotropic material due to its layered structure composed of two-dimensional carbon lattices. Although the intrinsic mechanical properties of graphene have been investigated at quasi-static conditions, its behavior under extreme dynamic conditions has not yet been studied.

They reported on the high-strain-rate behavior of multilayer graphene over a range of thicknesses from 10 to 100 nanometers by using miniaturized ballistic tests. Tensile stretching of the membrane into a cone shape is followed by initiation of radial cracks that approximately follow crystallographic directions and extend outward well beyond the impact area. The specific penetration energy for multilayer graphene is about 10 times more than literature values for macroscopic steel sheets at 600 meters per second.

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