DocumentCode :
1113976
Title :
Electronic properties of single-wall carbon nanotubes and their dependence on synthetic methods
Author :
Buzatu, Dan A. ; Biris, Alexandru Sorin ; Biris, Alexandru Radu ; Lupu, Dan Miron ; Darsey, Jerry Anthony ; Mazumder, Malay K.
Author_Institution :
FDA Nat. Center for Toxicological Res., Div. of Chem., Jefferson, AR, USA
Volume :
40
Issue :
5
fYear :
2004
Firstpage :
1215
Lastpage :
1219
Abstract :
Since their discovery in 1991, carbon nanotubes have been intensively studied, and a number of new applications have been identified. Applications range from nanoelectronics to hydrogen absorption for battery electrodes and fuel cells. Because of their high electrical conductivity and strength, high sensitivity atomic force microscopes already use carbon nanotubes for their tips, and carbon nanostructures are also used as electron beam emitters for medical and scientific equipment. Electron emission is directly correlated with the work function and the ionization potential of carbon nanotubes. Gaussian 98 software was used to perform theoretical quantum calculations on a limited set of HyperChem 5.01 simulated metallic single-wall carbon nanotubes. These initial sets of calculations show that bandgaps and work functions of these small carbon nanostructures are dependent upon the diameter of the tubes, and to a lesser degree so is the ionization potential. In addition, we demonstrate how the manufacturing methods can directly affect the diameter of the nanotubes produced, and therefore directly influence the electrical properties of the nanotubes.
Keywords :
carbon nanotubes; chemical engineering computing; electron emission; electronic engineering computing; ionisation potential; nanoelectronics; Gaussian 98 software; HyperChem 5.01; battery electrodes; carbon nanostructures; electrical conductivity; electron beam emitters; electron emission; fuel cells; high-sensitivity atomic force microscopes; hydrogen absorption; ionization potential; metallic single-wall carbon nanotubes; nanoelectronics; synthetic methods; Absorption; Atomic force microscopy; Batteries; Biomedical electrodes; Carbon nanotubes; Fuel cells; Hydrogen; Ionization; Nanoelectronics; Nanostructures; Computational; electronic properties; ionization potential; nanotubes; synthesis; work function;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2004.834051
Filename :
1337045
Link To Document :
بازگشت