Carbon Nanotube Forests on SiC: Structural and Electrical Properties

Author(s):  
Masafumi Inaba ◽  
Wataru Norimatsu ◽  
Michiko Kusunoki ◽  
Hiroshi Kawarada
2012 ◽  
Vol 2 (4) ◽  
pp. 357-362 ◽  
Author(s):  
Toru Iijima ◽  
Yasuhiro Inagaki ◽  
Hisayoshi Oshima ◽  
Takuya Iwata ◽  
Ryota Sato ◽  
...  

2013 ◽  
Vol 543 ◽  
pp. 447-450
Author(s):  
Zahra Karami Horastani ◽  
S. Javad Hashemifar ◽  
S. Masoud Sayedi ◽  
Mohammad Hossein Sheikhi ◽  
Reza Alaei

By using spin polarized density functional calculations, we investigate the effect of oxygen molecule adsorption on the structural and electrical properties of (8, 0) single wall carbon nanotube. The obtained results indicate endothermic chemisorption of O2on the nanotube surface with a large binding energy of about 598 meV and a significant charge transfer of about 0.43 e-per molecule. We find that despite the triplet ground state configuration of free oxygen molecule, adsorbed oxygen on the nanotube prefers a zero moment spin singlet state. It is discussed that O2chemisorption dopes the (8, 0) carbon nanotube with hole carries and thus increases its work function from 4.34 to 4.89eV. This hole doping effect may show potential applications of carbon nanotubes in conductivity and thermopower electric based sensors.


2011 ◽  
Vol 3 (10) ◽  
pp. 1-4 ◽  
Author(s):  
Bushra A Hasan ◽  
◽  
Ghuson H Mohamed ◽  
Amer A Ramadhan

Author(s):  
A. Kareem Dahash Ali ◽  
Nihad Ali Shafeek

This study included the fabrication of    compound (Tl2-xHgxBa2-ySryCa2Cu3O10+δ) in a manner solid state and under hydrostatic pressure ( 8 ton/cm2) and temperature annealing(850°C), and determine the effect of the laser on the structural and electrical properties elements in the compound, and various concentrations of x where (x= 0.1,0.2,0.3 ). Observed by testing the XRD The best ratio of compensation for x is 0.2 as the value of a = b = 5.3899 (A °), c = 36.21 (A °) show that the installation of four-wheel-based type and that the best temperature shift is TC= 142 K  .When you shine a CO2 laser on the models in order to recognize the effect of the laser on these models showed the study of X-ray diffraction of these samples when preparing models with different concentrations of the values ​​of x, the best ratio of compensation is 0.2 which showed an increase in the values ​​of the dimensions of the unit cell a=b = 5.3929 (A °), c = 36.238 (A°). And the best transition temperature after shedding laser is TC=144 K. 


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