Title :
In Situ Characterization of Individual Carbon Nanotube Field Emitters with Single Crystalline Cu Tips
Author :
Dong, Lixin ; Tao, Xinyong ; Li Zhang ; Nelson, Bradley J. ; Zhang, Li
Author_Institution :
Inst. of Robotics & Intelligent Syst., ETH Zurich
Abstract :
Field emission properties of carbon nanotubes (CNTs) filled with single crystalline Cu nanoneedles at their tips have been investigated in situ with an STM-TEM holder. The CNTs are synthesized using an alkali doped Cu catalyst by a thermal chemical vapor deposition method. Experiments show that CNTs filled with Cu have a much lower turn-on voltage (generally lower than 75V) than those without Cu (> 140V). Controlled ways to remove the filled Cu-nanoneedles are developed for this comparison
Keywords :
carbon nanotubes; chemical vapour deposition; copper; electron field emission; nanostructured materials; transmission electron microscopy; C; Cu; STM-TEM holder; carbon nanotube field emitters; field emission property; single crystalline copper tips; thermal chemical vapor deposition; Boats; Carbon nanotubes; Chemical vapor deposition; Copper; Crystallization; Electron emission; Furnaces; Nanoelectromechanical systems; Systems engineering and theory; Transmission electron microscopy; Cu-tipped carbon nanotube; carbon nanotube; field emission; nanomanipulation;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on
Conference_Location :
Zhuhai
Print_ISBN :
1-4244-0139-9
Electronic_ISBN :
1-4244-0140-2
DOI :
10.1109/NEMS.2006.334795
