Electronic Structures of Very Thin Carbon Nanotubes:  Are They Still π-Electronic Materials?

Nano Letters ◽  
2002 ◽  
Vol 2 (6) ◽  
pp. 629-633 ◽  
Author(s):  
A. Ito ◽  
Y. Natsume ◽  
S. Ohmori ◽  
K. Tanaka
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structures ◽  
Electronic Materials ◽  
Thin Carbon

Control of the outer diameter of thin carbon nanotubes synthesized by catalytic decomposition of hydrocarbons

2000 ◽  
Vol 317 (1-2) ◽  
pp. 71-76 ◽  
Author(s):  
I Willems ◽  
Z Kónya ◽  
J.-F Colomer ◽  
G Van Tendeloo ◽  
N Nagaraju ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Decomposition ◽  
Outer Diameter ◽  
Thin Carbon ◽  
Decomposition Of Hydrocarbons

In-Situ Characterization of Carbon Nanotube-Polystyrene Composite Deformation

2000 ◽  
Vol 6 (S2) ◽  
pp. 40-41
Author(s):  
D. Qian ◽  
E. C. Dickey ◽  
R. Andrews ◽  
T. Rantell ◽  
B. Safadi
Keyword(s):  
Carbon Nanotubes ◽  
Load Transfer ◽  
Electronic Materials ◽  
Composite Films ◽  
Chemical Vapor ◽  
Ex Situ ◽  
In Situ Tem ◽  
Multiwalled Carbon ◽  
Young’S Moduli

Carbon nanotubes (NTs) have novel electronic properties and exceptionally high Young's moduli on the order of TPa. so NTs have potential applications in advanced composite materials such as conductive polymers, electromagnetic-radio frequency interference (EMI/RFI) shielding material and opto-electronic materials. The utility of the nanotubes in composite applications depends strongly on the ability to disperse the NTs homogeneously throughout the matrix without destroying the integrity of the NTs. Furthermore, interfacial bonding between the NT and matrix is necessary to achieve load transfer across the interface, which is desirable for improving the mechanical properties of polymer composites.In this work, aligned multiwalled carbon nanotubes (MWNTs) produced by continuous chemical vapor deposition (CVD) (see Fig.l), were homogeneously dispersed in polystyrene (PS) matrices by a simple solution-evaporation method. Using this procedure, we made uniform MWNT-PS composite films ∼0.4mm thick for ex-situ mechanical tensile test and very thin films, ∼100nm, for in-situ TEM tests, as shown in Fig.2.

scholarly journals Energetics and Electronic Structures of Individual Atoms Adsorbed on Carbon Nanotubes

2004 ◽  
Vol 108 (2) ◽  
pp. 575-582 ◽  
Author(s):  
E. Durgun ◽  
S. Dag ◽  
S. Ciraci ◽  
O. Gülseren
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structures

Isotope velocity differentiation in thin carbon nanotubes through quantum diffusion

2003 ◽  
Vol 63 (2) ◽  
pp. 254-260 ◽  
Author(s):  
A. S Fedorov ◽  
P. V Avramov ◽  
S. G Ovchinnikov ◽  
G Kresse
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Diffusion ◽  
Thin Carbon

scholarly journals Energetics and electronic structures of perylene confined in carbon nanotubes

2018 ◽  
Vol 5 (6) ◽  
pp. 180359 ◽  
Author(s):  
Yuya Nagasawa ◽  
Takeshi Koyama ◽  
Susumu Okada
Keyword(s):  
Carbon Nanotubes ◽  
Density Functional Theory ◽  
Ground State ◽  
Electronic Structures ◽  
Density Functional ◽  
Molecular Conformation ◽  
Generalized Gradient ◽  
Functional Theory ◽  
Molecular Conformations ◽  
Generalized Gradient Approximation

The energetics and geometries of perylene encapsulated in carbon nanotubes (CNTs) have been investigated employing density functional theory using the generalized gradient approximation combined with the van der Waals correction. Our calculations show that the encapsulated perylene molecules possess two metastable molecular conformations with respect to the CNT wall, which are almost degenerate with each other. A standing conformation, with respect to the CNT wall, is the ground state conformation for a semiconducting (19,0)CNT, while a lying conformation is the ground state for a metallic (11,11)CNT. Cooperation and competition between perylene–perylene and perylene–CNT interactions cause these possible perylene conformations inside CNTs. However, the electronic structure of the CNT encapsulating the perylene molecules is found to be insensitive to the molecular conformation.

Electronic structures of semiconducting double-walled carbon nanotubes: Important effect of interlay interaction

2005 ◽  
Vol 414 (4-6) ◽  
pp. 429-433 ◽  
Author(s):  
Wei Song ◽  
Ming Ni ◽  
Jing Lu ◽  
Zhengxiang Gao ◽  
Shigeru Nagase ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structures ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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