1. Fibers of reduced graphene oxide nanoribbons
- Author
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Eui Yun Jang, Dae Weon Kim, Yong Hyup Kim, Taewoo Kim, Tae June Kang, Seung Jae Baek, Wal Jun Kim, Yung Woo Park, Mikhail E. Kozlov, Ajeong Choi, Javier Carretero-González, and Ray H. Baughman
- Subjects
Materials science ,Macromolecular Substances ,Surface Properties ,Oxide ,Molecular Conformation ,Bioengineering ,Nanotechnology ,law.invention ,chemistry.chemical_compound ,Pulmonary surfactant ,law ,Materials Testing ,General Materials Science ,Fiber ,Electrical and Electronic Engineering ,Particle Size ,chemistry.chemical_classification ,business.industry ,Graphene ,Mechanical Engineering ,Electric Conductivity ,Oxides ,General Chemistry ,Polymer ,Nanostructures ,Field electron emission ,Electrophoresis ,chemistry ,Mechanics of Materials ,Optoelectronics ,Graphite ,Current (fluid) ,business ,Crystallization - Abstract
Reduced graphene oxide nanoribbon fibers were fabricated by using an electrophoretic self-assembly method without the use of any polymer or surfactant. We report electrical and field emission properties of the fibers as a function of reduction degree. In particular, the thermally annealed fiber showed superior field emission performance with a low potential for field emission (0.7 V µm(-1)) and a giant field emission current density (400 A cm(-2)). Moreover, the fiber maintains a high current level of 300 A cm(-2) corresponding to 1 mA during long-term operation.
- Published
- 2012