Single-walled carbon nanotubes structures

Structurally, carbon nanotubes of small diameter are examples of a onedimensional periodic structure along the nanotube axis. In single wall carbon nanotubes, confinement of the stnreture in the radial direction is provided by the monolayer thickness of the nanotube in the radial direction. Circumferentially, the periodic boundary condition applies to the enlarged unit cell that is formed in real space. The application of this periodic boundary condition to the graphene electronic states leads to the prediction of a remarkable electronic structure for carbon nanotubes of small diameter. We first present... 

Structure of Multi-Walled and Single-Walled Carbon Nanotubes. EELS Study... 

Phonon Structure and Raman Effect of Single-Walled Carbon Nanotubes... 

Carbon nanotubes (CNTs) were discovered in 1991 by Iijima [182] and since then they have attracted much attention in many research fields. CNTs can be described as tubular structures rolled up from a graphene sheet. Depending on the number of tubular walls CNTs can be classified as single-walled carbon nanotubes (S WCNTs)... 

A. Jorio, R. Saito, J.H. Hafner, C.M. Lieber, M. Hunter, T. McClure, G. Dresselhaus, and M.S. Dresselhaus, Structural (n, m) determination of isolated single-wall carbon nanotubes by resonant Raman scattering. Phys. Rev. Lett. 86, 1118-1121 (2001). 

M.S. Strano, C.A. Dyke, M.L. Usrey, P.W. Barone, MJ. Allen, H. Shan, C. Kittrell, R.H. Hauge, J.M. Tour, R.E. Smalley, Electronic structure control of single-walled carbon nanotube functionalization. Science 301, 1519-1522 (2003). 

H. Grebel, Z. Iqbal, and A. Lan, Detecting single-wall carbon nanotubes with surface-enhanced Raman scattering from metal-coated periodic structures. Chem. Phys. Lett. 348, 203-208 (2001). 

Odom, T. W. Huang, J.-L. Kim, R Lieber, C. M. 1998. Atomic structure and electronic properties of single-walled carbon nanotubes. Nature 391 62-64. 

Because of the special atomic arrangement of the carbon atoms in a carbon nanotube, substitutional impurities are inhibited by the small size of the carbon atoms. Furthermore, the screw axis dislocation, the most common defect found in bulk graphite, is inhibited by the monolayer structure of the Cfjo nanotube. For these reasons, we expect relatively few substitutional or structural impurities in single-wall carbon nanotubes. Multi-wall carbon nanotubes frequently show bamboo-like defects associated with the termination of inner shells, and pentagon-heptagon (5 - 7) defects are also found frequently [7],... 

Karajanagi SS, Vertegel AA, Kane RS, Dordick JS (2004). Structure and function of enzymes adsorbed onto single-walled carbon nanotubes. Langmuir. 22 211-213. 

Bachilo SM, Strano MS, Kittrell C, Hauge RH, Smalley RE, Weisman RB (2002) Structure-assigned optical spectra of single-walled carbon nanotubes. Science 298 2361-2366. 

M. Rahmandoust, A. Ochsner, Influence of structural imperfections and doping on the mechanical properties of single-walled carbon nanotubes., Journal of Nano Research, vol. 

Fig. 4.12 The structural relationship between graphene sheet and single-walled carbon nanotube arrows point to two alternative directions of rolling circles inside rings reflect on aromatic character of carbon rings and delocalization of resonant electrons inside them...

Fig. 3 Structure of fullerenes Cso, C70, Cso and single-wall carbon nanotube. The figures were taken with permission of Prof. C. Dekker from the image gallery found at http //online.itp.ucsb.edu/online/qhalLc98/dekker/. Transmission electron microscopy image of multi-wall carbon nanotube (MWCNT) treated with iodinated and platinate DNA. The figure was taken from [24] with kind permission from Prof. P. Sadler...

As a third group of fullerene-like systems whose synthetic development is identified as a major future challenge are structurally defined single-walled carbon nanotubes (SWNTs) with uniform helicity and length, including their covalent and non-covalent derivatives. SWNTs can be considered as elongated giant fullerenes. 

Kavan L, Rapta P, Dunsch L et al (2001) Electrochemical tuning of electronic structure of single-walled carbon nanotubes in-situ Raman and Vis-NIR study. J Phys Chem B 105 10764-10771... 

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