Resonance Raman Scattering of Multi-Walled Carbon Nanotubes

1999 ◽  
Vol 593 ◽  
Author(s):  
H. Kataura ◽  
Y Achiba ◽  
X. Zhao ◽  
Y Ando
Keyword(s):  
Carbon Nanotubes ◽  
Raman Scattering ◽  
Resonance Effect ◽  
Resonance Raman ◽  
Radial Breathing Mode ◽  
Hydrogen Gas ◽  
Resonance Raman Scattering ◽  
Multi Walled Carbon Nanotubes ◽  
Carbon Arc ◽  
Walled Carbon Nanotubes

ABSTRACTMulti-walled carbon nanotubes synthesized by the carbon arc in hydrogen gas have very thin core channels. We have measured resonance Raman scattering of some samples synthesized in different conditions, and have observed radial breathing mode (RBM) peaks from 200 to 500 cm−1. Resonance effect of each peak is similar to that of single-walled nanotube. However, the peak frequencies are about 5 % higher than those of single-walled nanotubes, which is probably due to the inter-layer interaction. Further, the highest RBM peak splits in three peaks. The result on the resonance effect and the zone-folding band calculation suggest that the thinnest core nanotube is (4,3) that have four candidates of second outer nanotubes. This suggests that the different outer nanotube gives different degree of the interlayer interaction.

Resonance Raman scattering of the radial breathing mode in single wall carbon nanotubes

1998 ◽  
Author(s):  
Jenő Kürti ◽  
Hans Kuzmany ◽  
Bernhard Burger ◽  
Martin Hulman ◽  
A. G. Rinzler ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Scattering ◽  
Resonance Raman ◽  
Radial Breathing Mode ◽  
Single Wall Carbon Nanotubes ◽  
Resonance Raman Scattering ◽  
Breathing Mode ◽  
Single Wall Carbon

Defect-induced vibrational response of multi-walled carbon nanotubes using resonance Raman spectroscopy

2005 ◽  
Vol 20 (12) ◽  
pp. 3368-3373 ◽  
Author(s):  
S.A. Curran ◽  
J.A. Talla ◽  
D. Zhang ◽  
D.L. Carroll
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Acid Treatment ◽  
Defect Formation ◽  
Double Resonance ◽  
Resonance Raman ◽  
The Body ◽  
Structural Defects ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

We systematically introduced defects onto the body of multi-walled carbon nanotubes through an acid treatment, and the evolution of these defects was examined by Raman spectroscopy using different excitation wavelengths. The D and D′ modes are most prominent and responsive to defect formation caused by acid treatment and exhibit dispersive behavior upon changing the excitation wavelengths as expected from the double resonance Raman (DRR) mechanism. Several weaker Raman resonances including D″ and L1 (L2) + D′ modes were also observed at the lower excitation wavelengths (633 and 785 nm). In addition, specific structural defects including the typical pentagon-heptagon structure (Stone–Wales defects) were identified by Raman spectroscopy. In a closer analysis we also observed Haeckelite structures, specifically Ag mode response in R5,7 and O5,6,7.

Quantitative evaluation of bundling effect on single walled carbon nanotubes by resonance Raman spectra

2004 ◽  
Vol 858 ◽  
Author(s):  
Zhengtang Luo ◽  
Rongfu Li ◽  
Sang Nyon Kim ◽  
Fotios Papadimitrakopoulos
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Single Walled Carbon Nanotubes ◽  
Radial Breathing Mode ◽  
Peak Position ◽  
Single Walled Carbon ◽  
Physicochemical Changes ◽  
Resonance Raman Spectra ◽  
Walled Carbon Nanotubes

ABSTRACTThe radial breathing mode (RBM) region of the resonance Raman spectra of HiPco single walled carbon nanotubes (SWNTs) was investigated as a function of aggregation. This was modeled using an energetic deviation term (ΔE), imparted to the optical transitions (Eii(n, m)) by bundling effect. Eii(n, m) values obtained from photoluminescence (PL) measurements were used to reconstruct these RBM profiles. The simulation revealed that the PL-determined Eii(n, m) set provided a good fit in terms of peak position. Providing an accurate set of Eii(n, m) values becomes available, the RBM profile reconstruction methodology discussed herein could greatly enhance our ability to model a range of physicochemical changes to the immediate environment of SWNTs.

Carbon Nanotubes Under High Pressure Probed by Resonance Raman Scattering

2010 ◽  
pp. 435-446 ◽  
Author(s):  
Alfonso San-Miguel ◽  
Christophe Cailler ◽  
Denis Machon ◽  
Eduardo B. Barros ◽  
Acrisio L. Aguiar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Pressure ◽  
Raman Scattering ◽  
Resonance Raman ◽  
Resonance Raman Scattering
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