Synthesis of Double-Walled Carbon Nanotubes by Catalytic Chemical Vapor Deposition and Their Field Emission Properties

2006 ◽  
Vol 110 (11) ◽  
pp. 5310-5314 ◽  
Author(s):  
Yang Doo Lee ◽  
Hyeon Jae Lee ◽  
Jong Hun Han ◽  
Jae Eun Yoo ◽  
Yun-Hi Lee ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Field Emission ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Catalytic Chemical Vapor Deposition ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Stacking Nature of the Catalytic Chemical Vapor Deposition-Derived Double-Walled Carbon Nanotubes

2006 ◽  
Vol 6 (11) ◽  
pp. 3321-3324 ◽  
Author(s):  
Yoong-Ahm Kim ◽  
Hiroyuki Muramatsu ◽  
Masahito Kojima ◽  
Takuya Hayashi ◽  
Yutaka Kaburagi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Catalytic Chemical Vapor Deposition ◽  
Transmission Electron ◽  
Multi Walled Carbon Nanotubes ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Here we described the synthesis of highly pure double walled carbon nanotube (DWNT) through a right combination of a catalytic chemical vapor deposition method and the two-step purification and evaluated their stacking infidelity when compared to multi-walled carbon nanotubes (MWNTs). Easy fabrication of thin and flexible, but mechanically tough DWNT-buckypaper was due to the long and large-sized bundled DWNT (up to 50 nm), where DWNTs with diameter below 2 nm were packed in hexagonal array. Through detailed transmission electron microscope, X-ray and Raman studies, we confirmed that the intershell spacing of our DWNT sample was ca. 0.36 nm, which was believed to strongly affect negative and small magnetoresistance absolute value of −0.09 at 77 K and 1 T.

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