scholarly journals Phase transitions and in situ dynamics of crystal grain formation of alumina nanotubes templated by vertically aligned carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 68251-68259 ◽  
Author(s):  
L. F. Lampert ◽  
A. Barnum ◽  
S. W. Smith ◽  
J. F. Conley ◽  
J. Jiao

Vertically aligned alumina nanotubes created by atomic layer deposition onto carbon nanotubes scaffolds are synthesized and analyzed for phase transitionsviathermal annealing andin situelectron-irradiation induced crystallization.

2017 ◽  
Vol 46 (16) ◽  
pp. 5189-5201 ◽  
Author(s):  
Sherif Okeil ◽  
Jan Krausmann ◽  
Inga Dönges ◽  
Sandra Pfleger ◽  
Jörg Engstler ◽  
...  

ZnS nanoparticles have been synthesized on vertically aligned carbon nanotubes by gas-phase conversion of ZnO nanoparticles which have been tethered on vertically aligned carbon nanotubes using atomic layer deposition (ALD).


Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1095 ◽  
Author(s):  
Anna Szabó ◽  
László Péter Bakos ◽  
Dániel Karajz ◽  
Tamás Gyulavári ◽  
Zsejke-Réka Tóth ◽  
...  

Vertically aligned carbon nanotubes (VACNTs or “CNT forest”) were decorated with semiconductor particles (TiO2 and ZnO) by atomic layer deposition (ALD). Both the structure and morphology of the components were systematically studied using scanning (SEM) and high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and X-ray diffraction (XRD) methods. Characterization results revealed that the decoration was successful in the whole bulk of VACNTs. The effect of a follow-up heat treatment was also investigated and its effect on the structure was proved. It was attested that atomic layer deposition is a suitable technique for the fabrication of semiconductor/vertically aligned carbon nanotubes composites. Regarding their technological importance, we hope that semiconductor/CNT forest nanocomposites find potential application in the near future.


2019 ◽  
Vol 15 (4) ◽  
pp. 328-353 ◽  
Author(s):  
Mohd Asyraf Bin Mohd Razib ◽  
Tanveer Saleh

Vertically Aligned Carbon Nanotubes array which is also sometimes labeled as carbon nanotubes forests has many applications in several engineering fields for its remarkable mechanical, electrical, optical, and thermal properties. The Vertically Aligned Carbon Nanotubes array is often employed in developing microdevices such as pressure sensor, angle sensor, switches, etc. To successfully integrate carbon nanotubes forest to the micro-electro-mechanical systems based devices, micropatterning of the carbon nanotubes forest is required. There are several methods available to realize micropatterning of Vertically Aligned Carbon Nanotubes array, from in-situ patterning during the growth process to post-patterning process. Each has its advantages and disadvantages. This paper will discuss elaborately different patterning processes of the carbon nanotubes forest and their different characteristics.


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