Graphene, Nanoribbons, CVD
The fabrication of novel composites, gas storage devices, nanosensors, catalysts, batteries, etc.
Limit of the production amount of nanocarbon and difficulty in the manipulation of nanoribbons
The novel material consists of a plurality of thin graphite ribbons having long and highly crystalline nanoribbons. The bulk production of thin graphite ribbons is achieved with single-step and simple chemical vapor deposition (CVD) under ambient pressure and a temperature of 9500C. A voltage is applied across the length of the thin graphite ribbons to cause current flow so as to increase crystallinity as well as establishing interplanar stacking order and well-defined graphene edges. Heat treatment could also be applied to the nanoribbons up to 28000C in order to modify their structure and properties significantly. These ribbons could also be exfoliated and cut into shorter pieces or into narrow ribbons.
Bulk synthesis of a novel form of nanocarbon and ambient pressure CVD
U.S. Patent Application Number 12/042544, filed on March 5, 2008
Jia et al. Controlled formation of sharp zigzag and armchair edges in graphic nanoribbons. Science 323, 1701-1705 (2009).
Campos-Delgado et al. Resonant Raman Study on Bulk and Isolated Graphitic Nanoribbons. Adv. Mat. (2009). DOI: 10.1002/smll.200901059.
Campos-Delgado et al. Bulk Production of a New Form of sp2 Carbon: Crystalline Graphene Nanoribbons. Nano Lett. 8, 2773-2778 (2008).
Last revised:October 28, 2009
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