Work

Guided fractures in graphene mechanical diode-like structures

Year: 2022

Type: article

Abstract: The concept of a diode is usually applied to electronic and thermal devices but very rarely for mechanical ones. A recently proposed fracture rectification effect in polymer-based structures with triangular void defects has motivated us to test these ideas at the nanoscale using graphene membranes. Using fully-atomistic reactive molecular dynamics simulations we showed that robust rectification-like effects exist. The fracture can be 'guided' to more easily propagate along one specific direction than its opposite. We also observed that there is an optimal value for the spacing between each void for the rectification effect.

Source: Physical Chemistry Chemical Physics

DOI: 10.1039/d2cp01207c

Authors: Levi C. Felix, Douglas S. Galvao

Institution: Universidade Estadual de Campinas (UNICAMP)

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Fundação de Amparo à Pesquisa do Estado de São Paulo

Awards: G187716650, G5617399722