scholarly journals Mono-dispersed single-wall carbon nanotubes formed in channels of zeolite crystal: Production, optical and electrical transport properties

1999 ◽  
Vol 22 (3) ◽  
pp. 329-333 ◽  
Author(s):  
Z K Tang ◽  
H D Sun ◽  
J Wang ◽  
J Chen ◽  
G Li
Keyword(s):  
Carbon Nanotubes ◽  
Transport Properties ◽  
Electrical Transport ◽  
Single Wall Carbon Nanotubes ◽  
Zeolite Crystal ◽  
Electrical Transport Properties ◽  
Single Wall Carbon

Thermoelectric Properties of Single-Wall Carbon Nanotubes

1998 ◽  
Vol 545 ◽  
Author(s):  
L. Grigorian ◽  
G. Sumanasekera ◽  
P. C Eklund
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Magnetic Moments ◽  
Scattering Data ◽  
Single Wall Carbon Nanotubes ◽  
X Ray Diffraction ◽  
Electrical Transport Properties ◽  
Single Wall Carbon ◽  
Impurity Atoms ◽  
Kondo System

AbstractResults of the temperature dependence of the thermoelectric power and fourprobe resistance of single wall carbon nanotube mats are presented. The data are interpreted in terms of the response of a percolating network of metallic nanotube bundles. To the best of our knowledge, the work represents the first systematic study of the transport properties of a series of samples prepared using different transition metal-Y growth catalysts. Although x-ray diffraction and Raman scattering data indicate these samples are nominally the same, we find that the identity of the catalyst has a pronounced effect on the electrical transport properties. The data are interpreted qualitatively in terms of a dilute Kondo system involving the coupling of the the localized magnetic moments of impurity atoms (derived from the catalyst), and the conduction electron spins in the nanotube walls.

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