Results 21 to 30 of about 3,375,274 (296)

Raman active modes of single-wall boron nitride nanotubes inside carbon nanotubes

open access: yesMaterials and Devices, 2018
The structure of boron–nitride nanotubes (BNNTs) is very similar to that of CNTs, and they exhibit many similar physical and chemical properties]. In particular, a single walled boron nitride nanotube (BNNT) and a single walled carbon nanotube (CNT ...
Abdelhai Rahmani
doaj   +7 more sources

Reinforcing cement with pristine and functionalized carbon nanotubes: experimental and simulation studies

open access: yesInternational Journal of Smart and Nano Materials, 2020
In recent years, the addition of carbon nanotubes to construction materials has attracted considerable interest, due to the improvement of mechanical, electrical, and thermal properties of cement.
Rosario G. Merodio-Perea   +2 more
doaj   +1 more source

Characterization of multi-wall carbon nanotubes and their applications [PDF]

open access: yes, 2012
PhDCarbon nanotubes (CNT) and their applications is a field which has attract a lot of interest in the past two decades. Since the first invention of CNTs in 1991, and in view of utilising nanoantennas, the focus in many laboratories around the world has
Katsounaros, Anestis
core   +4 more sources

Moiré-Induced Vibrational Coupling in Double-Walled Carbon Nanotubes [PDF]

open access: yesNano Letters, 2021
Moiré patterns are additional, long-range periodicities in twisted crystalline bilayers. They are known to fundamentally change the electronic states of the layers, but similar effects on their mechanical and vibrational properties have not been discussed so far.
Georgy Gordeev   +4 more
openaire   +6 more sources

Preparation of double-walled carbon nanotubes

open access: yesChinese Science Bulletin, 2004
Double-walled carbon nanotubes were prepared using the floating chemical vapor deposition with methane as carbon source and adding small amount of sulfur into the ferrocene catalyst. The optimized technological parameters are: the reaction temperature is 1200°C; the catalyst vapor temperature is 80 °C; the flow rate of argon is 2000 SCCM; the flow rate
Bin Jiang   +3 more
openaire   +2 more sources

Forced Transverse Vibration of a Closed Double Single-Walled Carbon Nanotube System Containing a Fluid with Effect of Compressive Axial Load

open access: yesShock and Vibration, 2015
Based on the Rayleigh beam theory, the forced transverse vibrations of a closed double single-walled carbon nanotube (SWCNT) system containing a fluid with a Pasternak layer in-between are investigated.
Mehrdad Nasirshoaibi   +2 more
doaj   +1 more source

Measuring the Density of States of the Inner and Outer Wall of Double-Walled Carbon Nanotubes

open access: yesNanomaterials, 2018
The combination of ultraviolet photoelectron spectroscopy and metastable helium induced electron spectroscopy is used to determine the density of states of the inner and outer coaxial carbon nanotubes.
Benjamin A. Chambers   +4 more
doaj   +1 more source

Double-walled carbon nanotube-based polymer composites for electromagnetic protection. [PDF]

open access: yes, 2010
In this paper, we present a microwave absorber based on carbon nanotubes (CNT) dispersed inside a BenzoCycloButenw (BCB) polymer. The high aspect ratio and remarkable conductive characteristics of CNT give rise to good absorbing properties for ...
Flahaut, Emmanuel   +7 more
core   +1 more source

Catalytic CVD Synthesis of Double and Triple-walled Carbon Nanotubes by the Control of the Catalyst Preparation [PDF]

open access: yes, 2005
We report the influence of catalyst preparation conditions for the synthesis of carbon nanotubes (CNTs) by catalytic chemical vapour deposition (CCVD). Catalysts were prepared by the combustion route using either urea or citric acid as the fuel. We found
Flahaut, Emmanuel   +2 more
core   +1 more source

Double-Walled Carbon Nanotubes in Composite Powders

open access: yesJournal of Nanoscience and Nanotechnology, 2003
Double-walled carbon nanotubes (DWNTs) may be interesting in many applications since the outer wall would provide an interface with the rest of the system, without modifying the inner wall. CNT-Fe/Fe3C-Al2O3 composite powders containing carbon nanotubes (CNTs) (65% of which are DWNTs) are prepared by reduction of an oxide solid solution in a H2-CH4 gas
Flahaut, Emmanuel   +2 more
openaire   +4 more sources

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