Graphene coating makes copper more resistant to plastic deformation

Graphene coating makes carbon nanotube aerogels superelastic and resistant to fatigue.

Lightweight materials that are both highly compressible and resilient under large cyclic strains can be used in a variety of applications. Carbon nanotubes offer a combination of elasticity, mechanical resilience and low density, and these properties have been exploited in nanotube-based foams and aerogels. However, all nanotube-based foams and aerogels developed so far undergo structural colla...

Plastic Deformation in Laser-induced Shock Compression of Monocrystalline Copper

Copper monocrystals were subjected to shock compression at pressures of 10-60 GPa by a short (3 ns initial) duration laser pulse. Transmission electron microscopy revealed features consistent with previous observations of shock-compressed copper, albeit at pulse durations in the us regime. The results suggest that the defect structure is generated at the shock front. A mechanism for dislocation...

Atomistic based continuum investigation of plastic deformation in nanocrystalline copper

A continuum model of nanocrystalline copper was developed based on results from independent atomistic calculations on 11 bicrystals containing high angle grain boundaries. The relationship between grain boundary structure and its mechanical response was investigated. Based on the atomistic calculations; a constitutive law for grain boundary interfaces was implemented within a finite element cal...

Mechanical Properties of Copper Processed by Severe Plastic Deformation

Polymeric Gas Separation Membranes: What Makes them Industrially more Attractive?