Study of Mechanical Properties of Multilayer Graphene Sheets Controlled by Ion Irradiation

Project: Research

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Description

Graphene is a single-atom sheet of sp2-hybridized carbon atoms and it possesses excellent mechanical properties because of its unique structure. The majority of the graphene-based nanocomposites are reinforced by multilayer graphene sheets (MGS) rather than the monolayer type. But the poor interfacial bonding between the graphene layers limits the load transfer between them thus decreases the overall strength of the whole composites. Experiments carried out for carbon nanomaterials, such as graphene and nanotubes, showed that their atomic structure and morphology can be changed in a controllable manner by irradiation. It is reasonable to suppose, that irradiation can be used to tailor the mechanical properties of MGS effectively. The main objective of this project is to study the mechanical behaviors of the carbon ion irradiated MGS. The research will focus on the enhancement of interfacial shear strength by ion irradiation and effects of irradiationinduced defects on the in-plane mechanical properties of MGS. The deformation mechanism of defective MGS will be analyzed based on atomistic numerical simulations. The results are expected to be of benefit for improvement of the mechanical properties of graphene-based nanocomposites.

Detail(s)

Project number7003037
Grant typeSG
StatusFinished
Effective start/end date1/04/1313/06/14