Versatile Synthesis of Individual Single-Walled Carbon Nanotubes from Nickel Nanoparticles for the Study of Their Physical Properties

Abstract

Discrete nickel catalyst nanoparticles (NP) have been used to grow isolated single-walled carbon nanotubes by chemical vapor deposition (CVD). Atomic force microscopy (AFM), transmission electron microscopy (TEM) and micro-Raman spectroscopy are used to characterize these as-grown, isolated nanotubes. Using a conventional setup, we are able to produce narrow diameter distribution single-walled carbon nanotubes (SWNTs) (1.45 ( 0.5 nm), showing a clear mismatch with the larger broad size distribution of the catalyst nanoparticles (4.7 ( 1.5 nm). Investigation of the growth conditions allowed us to synthesize, starting with the same catalyst materials, various carbon nanotube (CNT) samples with a wide range of characteristics. The advantages of such a versatile CVD method for the study of physical properties at the single nanotube level are illustrated by means of two prospective studies on SWNTs mechanical and vibrational properties.

Raman Modes of Index-Identified Freestanding Single-Walled Carbon Nanotubes

“…Among these tubes, three times the (11,10) nanotube was found. On the whole, we have obtained spectra from 10 perfectly and unambiguously identified nanotubes: (11,10) (3 times), (15,6), (16,7), (12,12), (17,9), (15,14), (27,4) and (23,21) (see additional materials). Furthermore, we measured the spectra from two other tubes that could not be fully identified, but of which diameters were quite precisely determined from the equatorial lines of their diffraction patterns, i.e.…”

“…Single-walled carbon nanotubes are grown by chemical vapour deposition (CVD) on highly doped silicon substrates with a 200 nm Silicon dioxide layer [16]. A metal structure consisting of 3 nm Cr and 110 nm Au is created by electron beam lithography on top of the as-grown carbon nanotubes.…”

“…[6] only based on resonant Raman scattering data obtained by using the 1.58 eV laser excitation. Indeed, we have measured the RBM frequencies of the (16,7) and (15,6) metallic tubes, and the RBM frequencies of these same tubes are given in Table I of the Ref. [6].…”

Integrated Biomimemic Carbon Nanotube Composites for Biomedical Applications

“…Hong et al, 2002). Also, it can be observed several other peaks at 602 (PO4 3-), 962 (PO4 3-), 1592 (tangential mode) and 814 (symmetric CC4 stretching), 1452 (CH bending), 1123 (C-O stretching), 1724 (-C=O stretching), 2952 (CH stretching) cm -1 which are due to the HA, MWCNTs and PMMA, respectively (Paillet et al, 2004;de Mul et al, 1986;Suzuki et al, 1991;Kim et al, 2004;Matsushite et al, 2000). Nanoindentation tests were performed using a MTS Nano Indenter XP with a Berkovich diamond tip.…”

Progress in single‐walled carbon nanotube based nanoelectromechanical systems

“…Our previous work [6] was based on nanotubes synthesized by chemical vapor deposition [12] with an average diameter of 2 nm. SWNTs synthesized by the laser ablation method typically have a smaller diameter.…”