期刊
ACS NANO
卷 2, 期 12, 页码 2585-2591出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn800612d
关键词
carbon nanotube; nanolectronics; defect; electronic properties; quantum transport
类别
资金
- Oak Ridge National Laboratory
- U.S. Department of Energy [DEAC05-00OR22725]
- CONACYT-Mexico [56787, 45762, 45772, 41464, 42428, 2004-01-013/SALUD-CONACYT]
- Fondo Mixto de San Luis Potosi [63001 S-3908, 63072 S-3909]
- IPICyT
Electrical current could be efficiently guided in 2D nanotube networks by introducing specific topological defects within the periodic framework. Using semiempirical transport calculations coupled with Landauer-Buttiker formalism of quantum transport in multiterminal nanoscale systems, we provide a detailed analysis of the processes governing the atomic-scale design of nanotube circuits. We found that when defects are introduced as patches in specific sites, they act as bouncing centers that reinject electrons along specific paths, via a wave reflection process. This type of defects can be incorporated while preserving the 3-fold connectivity of each carbon atom embedded within the graphitic lattice. Our findings open up a new way to explore bottom-up design, at the nanometer scale, of complex nanotube circuits which could be extended to 3D nanosystems and applied in the fabrication of nanoelectronic devices.
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