Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 2, Issue 3, Pages 644-648Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am9009154
Keywords
carbon fiber; fiber composite; graphene; graphite flake; carbon nanosheet
Funding
- Indo-US Science and Technology Forum [115-2008/2009-10]
- Kirk Recharge Grant program
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We report a catalyst-free synthesis of cantilevered carbon nanosheet extensions, or petals, from graphite fibers by microwave plasma CVD. Results reveal that the petals grow from the fiber surface layers while preserving graphitic continuity from fiber to the petals. Subtraction of Raman signatures from pristine and decorated fibers reveals a convolution of two underlying peaks at 2687 and 2727 cm(-1) that are consistent with profiles of multilayer graphene flakes between 5 and 25 layers. Such structures offer the possibility of minimizing interfacial losses in transport applications, improved interactions with surrounding matrix materials in composites, and a route toward substrate independence for device applications.
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