Stress concentrations in nanoscale defective graphene
Source abstract
Abstract
Defect-free graphene nanosheets are the strongest material known but manufactured graphene tends to contain flaws of different forms and dimensions, leading to the degradation of mechanical performance. Here we report a quantitative mechanical approach to quantitatively evaluate the influence of defects within exfoliated pristine graphene sheets. Results indicate stress concentrations around defects within graphene sheets that lower strength. The description of stress concentration broadly follows a Griffith strength approach for continuum materials, despite the non-continuum structure of graphene, but has little impact on the Young’s modulus.
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Research context
OpenAlex topics: Graphene research and applications · Graphene and Nanomaterials Applications · Carbon Nanotubes in Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences 1 , Taiyuan 030001, P. R. China
School of Engineering and Materials Science, Queen Mary University of London 2 , Mile End Road, London E1 4NS, U.K.
School of Engineering, University of Portsmouth 3 , Portsmouth PO1 3DJ, U.K.
Funding
National Natural Science Foundation of China · Shanxi Scholarship Council of China · Natural Science Foundation of Shanxi Province
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