Solid State Science and Technology, Vol. 15, No 1 (2007) 22-29

ISSN 0128-7389

22

CATALYTIC EFFECT OF FORMATION OF A WEB-LIKE CARBON NANOSTRUCTURES

 

Noorhana Yahya1,2, Beh Hoe Guan1 and  Lim Kean Pah1

 

1Department of Physics, Faculty of Science, Universiti Putra Malaysia,

43400 UPM Serdang, Malaysia.

 

2Advanced Materials Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia

43400 UPM Serdang, Malaysia.

 

 

ABSTRACT

Carbon nanotubes have small dimensions, high strength and the remarkable physical and electrical properties. These make them very unique materials with a whole range of promising applications.  Carbon nanotubes were  formed  by  laser  ablation  using  a graphite target containing Ni and Co catalysts, each with weight percentage of 10%. The Nd:YAG laser with 532 nm wavelength, 10.54 W power was used to ablate the target to form the carbon nanotubes. The pressure inside the chamber was kept at 4Torr. Web-liked carbon nanotubes were formed on the substrate after 30 minutes oflaser ablation. The SEM images showed that the diameter of the carbon nanotubes formed using Ni and Co catalysts were between 50-150 nm in size.

 

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