Disintegration of graphene nanoribbons in large electrostatic fields

Abstract

The deformation and disintegration of a graphene nanoribbon under external electrostatic fields are investigated by first principle quantum mechanical calculations to establish its stability range. The zigzag edges terminated by various functional groups are considered. By analyzing the phonon spectrum, the critical fracture field for each edge structure is obtained. It is found that different terminal groups on the zigzag graphene nanoribbons lead to different fracture patterns at different fracture fields. The failure mechanism is demonstrated to rely on both the carbon bond alternation feature across the ribbon and terminal group electronegativity.

References in corpus (8)

• The electronic properties of graphene
• Energy Band Gap Engineering of Graphene Nanoribbons
• Energy Gaps in Graphene Nanoribbons
• Half-Metallic Graphene Nanoribbons
• Macroscopic graphene membranes and their extraordinary stiffness
• Graphite and graphene as perfect spin filters
• Subjecting a graphene monolayer to tension and compression
• The electric field as a novel switch for uptake/release of hydrogen storage in nitrogen doped graphene