Properties of the incandescent light emitted from double-walled carbon nanotube filament  

作　　者：韦进全 孙家林 吴德海 郭继华 骆建彬 王昆林 

机构地区：[1]Key Laboratory for Advanced Manufacturing by Materials Processing Technology of Education Ministry and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China [2]Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Physics B》2006年第11期2731-2734,共4页中国物理B（英文版）

摘　　要：We have studied the radiation of a double-walled carbon nanotube （DWNT） filament with a length of 4.5 mm and a diameter of 10μm by applying an electric current through the filament. The DWNT filament starts emitting incandescent light at voltage U =6V. Emission spectra of the DWNT below temperature 1250K can well be fitted to those of the blackbody radiation. The intensity of the incandescent light shows an exponential dependence on the voltage applied on the DWNT filaments. The resistance of the DWNT filaments is very stable at high temperatures between 900 and 1250 K during the emission of light in the experiments.We have studied the radiation of a double-walled carbon nanotube （DWNT） filament with a length of 4.5 mm and a diameter of 10μm by applying an electric current through the filament. The DWNT filament starts emitting incandescent light at voltage U =6V. Emission spectra of the DWNT below temperature 1250K can well be fitted to those of the blackbody radiation. The intensity of the incandescent light shows an exponential dependence on the voltage applied on the DWNT filaments. The resistance of the DWNT filaments is very stable at high temperatures between 900 and 1250 K during the emission of light in the experiments.

关 键 词：double-walled carbon nanotube filament emission spectra exponential dependence 

分 类 号：TB383[一般工业技术—材料科学与工程] O433[机械工程—光学工程]