scholarly journals Intermediate-frequency Raman modes for the lower optical transitions of semiconducting single-walled carbon nanotubes

2007 ◽  
Vol 75 (20) ◽  
Author(s):  
Zhengtang Luo ◽  
Fotios Papadimitrakopoulos ◽  
Stephen K. Doorn
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Intermediate Frequency ◽  
Optical Transitions ◽  
Single Walled Carbon ◽  
Raman Modes ◽  
Walled Carbon Nanotubes

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

2005 ◽  
Vol 95 (21) ◽  
Author(s):  
Jannik C. Meyer ◽  
Matthieu Paillet ◽  
Thierry Michel ◽  
Alain Moréac ◽  
Anita Neumann ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Raman Modes ◽  
Walled Carbon Nanotubes

Probing factors affecting the Raman modes and structural collapse of single-walled carbon nanotubes under pressure

2013 ◽  
Vol 250 (7) ◽  
pp. 1370-1375 ◽  
Author(s):  
Mingguang Yao ◽  
Shuangchen Lu ◽  
Junping Xiao ◽  
Zhen Yao ◽  
Linhai Jiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Structural Collapse ◽  
Factors Affecting ◽  
Single Walled Carbon ◽  
Raman Modes ◽  
Walled Carbon Nanotubes

Structural Analysis of Encapsulated Single-Walled Carbon Nanotubes

2015 ◽  
Vol 2 (2) ◽  
Author(s):  
D. B. Singh ◽  
V. N. Shukla ◽  
Vikas Kumar ◽  
Pragya Gupta ◽  
L. Ramma
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Properties ◽  
Single Walled Carbon Nanotubes ◽  
Radial Breathing Mode ◽  
Peak Position ◽  
Light Illumination ◽  
Single Walled Carbon ◽  
Raman Modes ◽  
Tip Enhanced Raman Spectroscopy ◽  
Walled Carbon Nanotubes

Tip-enhanced Raman spectroscopy revealed the nanoscale chemical properties of organic molecules encapsulated in single walled carbon nanotubes (SWNTs). Our approach is based on an enhanced electric field near a laser-irradiated metal tip functioning as a Raman excitation source. The enhanced field can successfully act on encapsulated molecules through the walls of the SWNTs to extract molecular vibrational information -carotene, which exhibits several active Raman modes under visible light illumination, was used as the encapsulated molecule. Tip-enhanced Raman spectra measured at seven different positions on SWNT bundles showed that carotene molecules inside the tubes were not uniformly distributed. It is also found that the filling rate and peak position of the radial breathing mode of the SWNTs are linearly correlated.

scholarly journals Raman Spectroscopy Study of the Doping Effect of the Encapsulated Iron, Cobalt, and Nickel Bromides on Single-Walled Carbon Nanotubes

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Marianna V. Kharlamova
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
Radial Breathing Mode ◽  
Doping Effect ◽  
Single Walled Carbon ◽  
Iron Bromide ◽  
Raman Modes ◽  
Walled Carbon Nanotubes ◽  
Cobalt And Nickel

In this contribution the modification of the electronic properties of single-walled carbon nanotubes (SWCNTs) filled with nickel bromide, cobalt bromide, and iron bromide was studied by Raman spectroscopy. The doping-induced alterations of the radial breathing mode (RBM) and G-mode in the Raman spectra of the filled SWCNTs were analyzed in detail. The observed shifts of the components of the Raman modes and changes of their profiles allowed concluding that the embedded compounds have an acceptor doping effect on the SWCNTs, and the doping level increases in the line with nickel bromide-cobalt bromide-iron bromide.

The Effect of DNA Adsorption on Optical Transitions in Single Walled Carbon Nanotubes

2015 ◽  
Vol 119 (36) ◽  
pp. 21141-21145 ◽  
Author(s):  
Masahiro Ito ◽  
Yusuke Ito ◽  
Daisuke Nii ◽  
Hiroki Kato ◽  
Kazuo Umemura ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Optical Transitions ◽  
Dna Adsorption ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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