scholarly journals Laser Patterning of Aligned Carbon Nanotubes Arrays: Morphology, Surface Structure, and Interaction with Terahertz Radiation

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3275
Author(s):  
Olga V. Sedelnikova ◽  
Dmitriy V. Gorodetskiy ◽  
Alexander G. Kurenya ◽  
Kseniya I. Baskakova ◽  
Elena V. Shlyakhova ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Laser Treatment ◽  
Co2 Laser ◽  
Thz Radiation ◽  
Silicon Substrates ◽  
Multi Walled Carbon Nanotubes ◽  
Co2 Laser Treatment ◽  
Oxygen Groups ◽  
Frequency Behavior ◽  
Walled Carbon Nanotubes

The patterning of arrays of aligned multi-walled carbon nanotubes (MWCNTs) allows creating metastructures for terahertz (THz) applications. Here, the strips and columns from MWCNTs vertically grown on silicon substrates are prepared using CO2 laser treatment. The tops of the patterned arrays are flat when the laser power is between 15 and 22 W, and craters appear there with increasing power. Laser treatment does not destroy the alignment of MWCNTs while removing their poorly ordered external layers. The products of oxidative destruction of these layers deposit on the surfaces of newly produced arrays. The oxygen groups resulting from the CO2 laser treatment improve the wettability of nanotube arrays with an epoxy resin. We show that the patterned MWCNT arrays absorb the THz radiation more strongly than the as-synthesized arrays. Moreover, the pattern influences the frequency behavior of the absorbance.

scholarly journals Total re-establishment of superhydrophobicity of vertically-aligned carbon nanotubes by Co2 laser treatment

2010 ◽  
Vol 204 (18-19) ◽  
pp. 3073-3077 ◽  
Author(s):  
S.C. Ramos ◽  
G. Vasconcelos ◽  
E.F. Antunes ◽  
A.O. Lobo ◽  
V.J. Trava-Airoldi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Laser Treatment ◽  
Co2 Laser ◽  
Vertically Aligned Carbon Nanotubes ◽  
Aligned Carbon Nanotubes ◽  
Co2 Laser Treatment ◽  
Vertically Aligned

Growth of Carbon Nanotubes with Controlled Morphologies

2002 ◽  
Vol 728 ◽  
Author(s):  
Lifeng Dong ◽  
Jun Jiao ◽  
Catherine L. Mosher ◽  
Sean Foxley
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Source ◽  
Single Walled Carbon Nanotubes ◽  
Average Diameter ◽  
Silicon Substrates ◽  
Average Growth Rate ◽  
Average Growth ◽  
Carbon Particles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractThe alignment, orientation and morphologies of multi-walled carbon nanotubes (MWNTs) can be tailored by controlling catalyst deposition on porous silicon substrates. During the growth of MWNTs, H2 promoted the growth of carbon nanotubes and prevented the formation of amorphous carbon particles. With the introduction of H2, the average diameter of MWNTs decreased from 130 nm to 15 nm, and the average growth rate of nanotubes increased from 50 nm/s to 145 nm/s. The use of CH4 as the carbon source resulted in single-walled carbon nanotubes (SWNTs) with an average diameter of 2 nm, and the use of C2H2 as the carbon source resulted in MWNTs with an average diameter of 15 nm.

Multi-walled Carbon Nanotubes Penetrate into Plant Cells and Affect the Growth of Onobrychis arenaria Seedlings

Acta Naturae ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 99-106 ◽  
Author(s):  
E A Smirnova ◽  
A A Gusev ◽  
O N Zaitseva ◽  
E M Lazareva ◽  
G E Onishchenko ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Plant Cells ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Incorporation of Multi Wall Carbon Nanotubes into Glass-Surfaces via Laser-Treatment

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Continuous Wave ◽  
Silica Surface ◽  
Multi Wall Carbon Nanotubes ◽  
Composite Formation ◽  
Multi Walled Carbon Nanotubes ◽  
Glass Surfaces ◽  
Walled Carbon Nanotubes ◽  
First Time ◽  
Scanning Electron

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.

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