Strain Rate Dependent Shear Plasticity in Graphite Oxide
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- 作者：Soumya Vinod ; Chandra Sekhar Tiwary ; Leonardo D. Machado ; Sehmus Ozden ; Juny Cho ; Preston Shaw ; Robert Vajtai ; Douglas S. Galv?o ; Pulickel M. Ajayan
- 刊名：Nano Letters
- 出版年：2016
- 出版时间：February 10, 2016
- 年：2016
- 卷：16
- 期：2
- 页码：1127-1131
- 全文大小：358K
- ISSN：1530-6992
文摘
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.