Growth mechanism and wave-absorption properties of multiwalled carbon nanotubes fabricated using a gaseous detonation method

2018 ◽  
Vol 102 ◽  
pp. 153-159 ◽  
Author(s):  
Tiejun Zhao ◽  
Xiaojie Li ◽  
Yang Wang ◽  
John H.S. Lee ◽  
Honghao Yan
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Growth Mechanism ◽  
Gaseous Detonation ◽  
Absorption Properties ◽  
Multiwalled Carbon ◽  
Wave Absorption ◽  
Detonation Method

Wave Absorption Properties of Co-C Nanoparticles Prepared by the Gaseous Detonation Method

2021 ◽  
Vol 57 (6) ◽  
pp. 77-86
Author(s):  
T.-J. Zhao ◽  
X.-H. Wang ◽  
S. Kang ◽  
Z.-F. Wang ◽  
H.-H. Yan
Keyword(s):  
Gaseous Detonation ◽  
Absorption Properties ◽  
Wave Absorption ◽  
Detonation Method

Characterisation of the Growth Mechanism during PECVD of Multiwalled Carbon Nanotubes

2006 ◽  
pp. 77-93 ◽  
Author(s):  
Martin S. Bell ◽  
Rodrigo G. Lacerda ◽  
Kenneth B.K. Teo ◽  
William I. Milne
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Growth Mechanism ◽  
Multiwalled Carbon

scholarly journals Structural, microstructural, magnetic and electromagnetic absorption properties of spiraled multiwalled carbon nanotubes/barium hexaferrite (MWCNTs/BaFe12O19) hybrid

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nurshahiera Rosdi ◽  
Raba’ah Syahidah Azis ◽  
Ismayadi Ismail ◽  
Nurhidayaty Mokhtar ◽  
Muhammad Misbah Muhammad Zulkimi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Absorption ◽  
Multiwalled Carbon Nanotubes ◽  
Reflection Loss ◽  
Barium Hexaferrite ◽  
High Energy ◽  
Absorption Properties ◽  
Multiwalled Carbon ◽  
Absorption Bandwidth ◽  
Minimum Reflection Loss

AbstractMicrowave absorption properties were systematically studied for synthesised barium hexaferrite (BaFe12O19) nanoparticles and spiraled multiwalled carbon nanotubes (MWCNTs) hybrid. BaFe12O19 nanoparticles were synthesised by a high energy ball milling (HEBM) followed by sintering at 1400 °C and structural, electromagnetic and microwave characteristics have been scrutinized thoroughly. The sintered powders were then used as a catalyst to synthesise spiraled MWCNTs/BaFe12O19 hybrid via the chemical vapour deposition (CVD) process. The materials were then incorporated into epoxy resin to fabricate single-layer composite structures with a thickness of 2 mm. The composite of BaFe12O19 nanoparticles showed a minimum reflection loss is − 3.58 dB and no has an absorption bandwidth while the spiraled MWCNTs/BaFe12O19 hybrid showed the highest microwave absorption of more than 99.9%, with a minimum reflection loss of − 43.99 dB and an absorption bandwidth of 2.56 GHz. This indicates that spiraled MWCNTs/BaFe12O19 hybrid is a potential microwave absorber for microwave applications in X and Ku bands.

Multiwalled Carbon Nanotube Growth Mechanism on Conductive and Non-Conductive Barriers

2011 ◽  
Vol 403-408 ◽  
pp. 1201-1204 ◽  
Author(s):  
Aun Shih Teh ◽  
Daniel C.S. Bien ◽  
Rahimah Mohd Saman ◽  
Soo Kien Chen ◽  
Kai Sin Tan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Growth Mechanism ◽  
Growth Rates ◽  
Tip Growth ◽  
Chemical Vapor ◽  
Multiwalled Carbon ◽  
Co Catalyst ◽  
Carbon Nanotube Growth ◽  
Nanotube Growth

We report on the catalytic growth of multiwalled carbon nanotubes by plasma enhanced chemical vapor deposition using Ni and Co catalyst deposited on SiO2, Si3N 4,ITO and TiN Xbarrier layers; layers which are typically used as diffusive barriers of the catalyst material. Results revealed higher growth rates on conductive ITO and TiN Xas compared to non con-ductiveSiO2, and Si3N 4,barriers. Micrograph images reveal the growth mechanism for nanotubes grown on SiO2, Si3N 4 and ITO to be tip growth while base growth was observed for the TiN X barrier layer. Initial conclusion suggests that conductive diffusion barrier surfaces promotes growth rates however it is possible that multiwalled carbon nanotubes grown onSiO2, and Si3N 4,were encumbered as a result of the formation of silicide as shown in the results here.

DIAMOND NANORODS FROM CARBON NANOTUBES BY HYDROGEN PLASMA TREATMENT

2006 ◽  
Vol 05 (02n03) ◽  
pp. 307-313 ◽  
Author(s):  
J. L. GONG ◽  
L. T. SUN ◽  
D. Z. ZHU ◽  
Z. Y. ZHU ◽  
S. X. HE ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Plasma Treatment ◽  
Multiwalled Carbon Nanotubes ◽  
Growth Mechanism ◽  
Amorphous Carbon ◽  
Inner Core ◽  
Diamond Crystal ◽  
Hydrogen Plasma ◽  
Multiwalled Carbon ◽  
Sheath Structure

Single crystalline diamond nanorods with diameters of 4–8 nm and with lengths up to 200 nm have been synthesized by hydrogen plasma post-treatment of multiwalled carbon nanotubes. The diamond nanorods were identified to have a core-sheath structure with inner core being diamond crystal and outer shell being amorphous carbon. A growth mechanism for the diamond nanorods was proposed.

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