Raman studies of carbon nanotubes

Hiura, Hidefumi; Ebbesen, Thomas W.; Tanigaki, Katsumi; Takahashi, H.

doi:10.1016/0009-2614(93)90040-8

Cited by 423 publications

(204 citation statements)

References 10 publications

Supporting

Mentioning

197

Contrasting

Unclassified

Order By: Relevance

“…Another quantity of interest is the full width at half maximum (FWHM) of the G band. Its value is 17 cm −1 for the purified sample and 27 cm −1 for the non purified one to be compared to 13 cm −1 for HOPG graphite 8 . In pre-graphitic carbons, both quantities, I D /I G and FWHM, are known to depend on the size of the graphitic crystallites 9,10 : the smaller these parameters, the highest the degree of crystallinity.…”

Section: Figmentioning

confidence: 94%

Low-frequency Raman studies of multiwalled carbon nanotubes: Experiments and theory

et al. 2002

View full text Add to dashboard Cite

In this paper, we investigate the low frequency Raman spectra of multi-wall carbon nanotubes (MWNT) prepared by the electric arc method. Low frequency Raman modes are unambiguously identified on purified samples thanks to the small internal diameter of the MWNT. We propose a model to describe these modes. They originate from the radial breathing vibrations of the individual walls coupled through the Van der Waals interaction between adjacent concentric walls. The intensity of the modes is described in the framework of bond polarization theory. Using this model and the structural characteristics of the nanotubes obtained from transmission electron microscopy allows to simulate the experimental low frequency Raman spectra with an excellent agreement. It suggests that Raman spectroscopy can be as useful regarding the characterization of MWNT as it is in the case of single-wall nanotubes.

show abstract

Section: Figmentioning

confidence: 94%

Low-frequency Raman studies of multiwalled carbon nanotubes: Experiments and theory

et al. 2002

View full text Add to dashboard Cite

show abstract

“…Raman spectroscopy was first conducted on CNTs in 1993, and since then, it has been used for characterization of nanocomposites [100]. Raman spectroscopy can be used for detection of the type of functionalization [101] and the diameter of the nanotubes [102,103].…”

Section: Spectroscopy Techniquesmentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

157

View full text Add to dashboard Cite

Composite materials and especially polymer composites are widely used in daily life and different industries due to their vastly different properties and design flexibility. It is known that the properties of the composites are strongly related to the properties of its constituents. However, it has been reported in many studies, experimentally and by simulations, that the characteristics of the composites do not follow the rule of mixing. It means that in addition to properties of the constituents, there are other parameters affecting the final physicochemical properties of composites. The interfacial interactions between fillers and host is one of the factors which can strongly affect the properties of the composite. In this review, we summarized the type of interactions between the constituents, their improvement techniques, interaction measurement methods, and the effects of interfacial interactions on thermal, mechanical, and electrical properties of composites.

show abstract

“…[22][23][24][25][26][27][28][29][30][31][32] They are made of coaxial graphite cylinders with nanometer scale radii and micrometer scale lengths, and are thus ideal quasi-onedimensional systems for investigating the fundamental issues of one-dimensional systems. Various experiments carried out thus far (transmission electron spectroscopy (TEM), 21,23,33,34 scanning tunneling microscopy and spectroscopy (STM/ STS), [24][25][26][27][28] and Raman scattering [35][36][37] ) consistently show that the CNTs are cylindrical graphene sheets of sp 2 -bonded carbon atoms.…”

Section: Introductionmentioning

confidence: 99%

Localized-Density-Matrix Method and Its Application to Carbon Nanotubes

et al. 1999

View full text Add to dashboard Cite

The localized-density-matrix method Chen, G. H. Chem. Phys. Lett. 1998, 292, 379) is employed to simulate the optical responses of very large carbon nanotubes and polyacetylene oligomers containing 10 000 carbon atoms. The Pariser-Parr-Pople Hamiltonian is used to describe the π electrons in these systems, and the time-dependent Hartree-Fock approximation is employed to calculate the linear optical responses. In the calculation, the fast multipole method or the cell multipole method is employed to evaluate the effects of Coulomb interaction. It is illustrated that the computational time scales linearly with the system size for carbon nanotubes while high accuracy is achieved.

show abstract

Raman studies of carbon nanotubes

Cited by 423 publications

References 10 publications

Low-frequency Raman studies of multiwalled carbon nanotubes: Experiments and theory

Low-frequency Raman studies of multiwalled carbon nanotubes: Experiments and theory

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Localized-Density-Matrix Method and Its Application to Carbon Nanotubes

Contact Info

Product

Resources

About