Vertically aligned N-doped carbon nanotubes by spray pyrolysis of turpentine oil and pyridine derivative with dissolved ferrocene

2008 ◽  
Vol 354 (34) ◽  
pp. 4101-4106 ◽  
Author(s):  
Pradip Ghosh ◽  
Tetsuo Soga ◽  
Kaushik Ghosh ◽  
Rakesh A. Afre ◽  
Takashi Jimbo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Spray Pyrolysis ◽  
Pyridine Derivative ◽  
Vertically Aligned

VERTICALLY ALIGNED CARBON NANOTUBES AT DIFFERENT TEMPERATURES BY SPRAY PYROLYSIS TECHNIQUES

2006 ◽  
Vol 20 (29) ◽  
pp. 4965-4972 ◽  
Author(s):  
RAKESH A. AFRE ◽  
T. SOGA ◽  
T. JIMBO ◽  
MUKUL KUMAR ◽  
Y. ANDO ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Spray Pyrolysis ◽  
Morphological Characteristics ◽  
Catalyst Precursor ◽  
Simple Method ◽  
Fe Catalyst ◽  
Different Temperatures ◽  
Multi Walled Carbon Nanotubes ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes

Vertically aligned arrays of multi-walled carbon nanotubes (VACNTs) were grown by spray pyrolysis of turpentine oil and ferrocene mixture at temperatures higher than 700°C. Using this simple method, we report the successful growth of vertically aligned nanotubes of ~300μm length and diameter in the range of ?20–80 nm on Si (100) substrate. The ferrocene acts as an in situ Fe catalyst precursor, forming the nano-sized metallic iron particles for formation of VACNTs on the Si substrate. The morphological characteristics of VACNTs are confirmed by SEM, TEM and Raman spectroscopy and growth mechanism is discussed in short.

Fabrication of Carbon Nanotube Triode Using Helicon Plasma Cvd with Electroplated Nico Catalyst

2003 ◽  
Vol 772 ◽  
Author(s):  
Masakazu Muroyama ◽  
Kazuto Kimura ◽  
Takao Yagi ◽  
Ichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Ni Catalyst ◽  
Plasma Cvd ◽  
Helicon Plasma ◽  
Plasma Enhanced Cvd ◽  
Turn On ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned

AbstractA carbon nanotube triode using Helicon Plasma-enhanced CVD with electroplated NiCo catalyst has been successfully fabricated. Isolated NiCo based metal catalyst was deposited at the bottom of the cathode wells by electroplating methods to control the density of carbon nanotubes and also reduce the activation energy of its growth. Helicon Plasma-enhanced CVD (HPECVD) has been used to deposit nanotubes at 400°C. Vertically aligned carbon nanotubes were then grown selectively on the electroplated Ni catalyst. Field emission measurements were performed with a triode structure. At a cathode to anode gap of 1.1mm, the turn on voltage for the gate was 170V.

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