scholarly journals Characterization of contact resistances in ceramic-coated vertically aligned carbon nanotube arrays

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7266-7275
Author(s):  
Meng Li ◽  
Ning Yang ◽  
Vanessa Wood ◽  
Hyung Gyu Park
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Nanotube Arrays ◽  
Aligned Arrays ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

End- and side-contact resistances between carbon nanotubes and contacts are easily probed in vertically aligned arrays.

scholarly journals The shape of the orientation distribution of carbon nanotubes in aligned arrays

2014 ◽  
Vol 70 (a1) ◽  
pp. C596-C596
Author(s):  
Ulla Vainio ◽  
Thea Schnoor ◽  
Sarathlal Koyiloth Vayalil ◽  
Karl Schulte ◽  
Martin Müller ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Iron Catalyst ◽  
Chemical Vapour ◽  
Orientation Distribution ◽  
Steric Interaction ◽  
Nanotube Arrays ◽  
X Ray ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

Recent simulations of vertically aligned carbon nanotube arrays have shown that the shape of the orientation distribution of nanotubes within the array has a drastic effect on the electrical properties of the array. Orienting of shape-anisotropic objects can be carried out in several different ways such as shearing, magnetically steering, or by vibrating the objects. Nevertheless, perfect orientation is difficult if not impossible to achieve. In the case of the growth of carbon nanotube arrays, self-confinement can occur affecting the resultant orientation distribution. Yet so far the shape of the orientation distribution has not been quantified in great detail and it has been mostly assumed to be Gaussian or Lorentzian. In the present work, multi-walled carbon nanotube arrays were grown via aerosol-assisted chemical vapour deposition with iron catalyst and investigated using small-angle X-ray scattering, a method perfectly suited to characterizing the orientation of carbon nanotubes. Using a microfocused X-ray beam of 24 μm x 17 μm in size at beamline P03 of the PETRA III synchrotron storage ring in Hamburg, we determined the orientation distribution of the vertically aligned carbon nanotubes along the film height. Remarkably, the packing density of the carbon nanotubes seems to correlate not only with the width of the distribution but also its shape. The shape of the orientation distribution was then compared to that from different oriented systems. These findings indicate that by using alignment methods that are based on steric interaction between particles, such as shearing or self-confinement during particle growth, the system will reach an alignment with an orientation distribution closer to the Laplace distribution than to the normal distribution. Such a finding has profound implications for simulation studies of mechanical, electrical and other properties of many hierarchical materials.

Microwave characterization of vertically aligned multiwalled carbon nanotube arrays

2011 ◽  
Vol 98 (20) ◽  
pp. 203105 ◽  
Author(s):  
Anestis Katsounaros ◽  
Khalid Z. Rajab ◽  
Yang Hao ◽  
Mark Mann ◽  
William I. Milne
Keyword(s):  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Nanotube Arrays ◽  
Multiwalled Carbon ◽  
Microwave Characterization ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

Fluffy carbon nanotubes produced by shearing vertically aligned carbon nanotube arrays

Carbon ◽  
2009 ◽  
Vol 47 (2) ◽  
pp. 538-541 ◽  
Author(s):  
Qiang Zhang ◽  
Guang-Hui Xu ◽  
Jia-Qi Huang ◽  
Wei-Ping Zhou ◽  
Meng-Qiang Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

scholarly journals Optical bandgap modelling from the structural arrangement of carbon nanotubes

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10683-10690
Author(s):  
Timothy P. Butler ◽  
Ijaz Rashid ◽  
Yunuen Montelongo ◽  
Gehan A. J. Amaratunga ◽  
Haider Butt
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Spectral Studies ◽  
Nanotube Arrays ◽  
Multiwalled Carbon ◽  
Structural Arrangement ◽  
Periodic Arrays ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

Spectral studies on the periodic arrays of vertically-aligned multiwalled carbon nanotube arrays.

A flexible, nonenzymatic glucose biosensor based on Ni-coordinated, vertically aligned carbon nanotube arrays

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48310-48316 ◽  
Author(s):  
Wan-Sun Kim ◽  
Gi-Ja Lee ◽  
Je-Hwang Ryu ◽  
KyuChang Park ◽  
Hun-Kuk Park
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Glucose Biosensor ◽  
Graphite Substrate ◽  
Nanotube Arrays ◽  
Vertically Aligned Carbon Nanotubes ◽  
Carbon Nanotube Arrays ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned ◽  
Flexible Graphite

We evaluated the use of flexible biosensors based on Ni-coordinated, vertically aligned carbon nanotubes on a flexible graphite substrate (Ni/VCNTs/G) for the nonenzymatic electrochemical detection of glucose.

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