期刊
APPLIED PHYSICS LETTERS
卷 101, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4745010
关键词
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资金
- University Graduate School, FIU
- AFOSR [FA9550-09-1-0544]
- NSF [NSF CMMI-0900583]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0900583] Funding Source: National Science Foundation
High-current field emitter with extended stability has been focus of many researchers, which can be fulfilled by application of engineered nanomaterials and beneficial design. In the present research, such a field emitter is designed and fabricated, involving growth of interface controlled carbon nanotubes along micro-channels of 3-dimensional copper template. The emitter offers very high emission current density (270 mA/cm(2), peak), low turn-on field (1.1 V/mu m), moderate threshold field (1.69 V/mu m), emission stability for extended operation, and excellent resistance to structural damage. Higher conductivity of Cu, lower interfacial resistance, strong interfacial bonding, and unique 3-dimensional design leads to such 23-27 times higher current density, providing a potential approach to field emission devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745010]
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