title: Strain Rate Dependent Shear Plasticity in Graphite Oxide.
abstract: Graphene oxide film is made of stacked graphene layers with chemical functionalities, and we report that plasticity in the film can be engineered by strain rate tuning. The deformation behavior and plasticity of such functionalized layered systems is dominated by shear slip between individual layers and interaction between functional groups. Stress-strain behavior and theoretical models suggest that the deformation is strongly strain rate dependent and undergoes brittle to ductile transition with decreasing strain rate.
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Soumya
authors.initials: S
authors.lastname: Vinod
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Chandra Sekhar
authors.initials: CS
authors.lastname: Tiwary
authors.affiliation: Instituto de Física "Gleb Wataghin", Universidade Estadual de Campinas , CP 6165, 13083-970 Campinas, São Paulo, Brazil.
authors.forename: Leonardo D
authors.initials: LD
authors.lastname: Machado
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Sehmus
authors.initials: S
authors.lastname: Ozden
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Juny
authors.initials: J
authors.lastname: Cho
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Preston
authors.initials: P
authors.lastname: Shaw
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Robert
authors.initials: R
authors.lastname: Vajtai
authors.affiliation: Instituto de Física "Gleb Wataghin", Universidade Estadual de Campinas , CP 6165, 13083-970 Campinas, São Paulo, Brazil.
authors.forename: Douglas S
authors.initials: DS
authors.lastname: Galvão
authors.affiliation: Department of Materials Science and Nanoengineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Pulickel M
authors.initials: PM
authors.lastname: Ajayan
keywords: Graphene oxide; MD simulation; brittle-ductile transition; stick−slip; strain rate