Influence of diameter in the Raman spectra of aligned multi-walled carbon nanotubes

Antunes, E.F.; Lobo, Anderson Oliveira; Corat, Evaldo José; Trava-Airoldi, V.J.

doi:10.1016/j.carbon.2007.01.003

Cited by 213 publications

(97 citation statements)

References 42 publications

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“…Two strong peaks are located at 1580 cm À1 (G), and 1350 cm À1 (D), and a weak peak is detected at around 2700 cm À1 (G'). 40,41 D/G ratio and different peak positions of these CNTs are different based on various types of CNTs. In addition, we used the Raman spectroscopy technique for evaluating CNT orientation in aligned MWCNT/PET nanocomposite nanofibers [ Fig.…”

Section: Raman Spectroscopymentioning

confidence: 99%

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Mazinani

Ajji

Dubois

2010

J Polym Sci B Polym Phys

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The morphology, structure, and properties of polyethylene terephthalate (PET)/Carbon Nanotubes (CNT) conductive nanoweb were studied in this article. Nanocomposite nanofibers were obtained through electrospinning of PET solutions in trifluoroacetic acid (TFA)/dichloromethane (DCM) containing different concentrations and types of CNTs. Electrical conductivity measurements on nanofiber mats showed an electrical percolation threshold around 2 wt % multi‐wall carbon nanotubes (MWCNT). The morphological analysis results showed smoother nanofibers with less bead structures development when using a rotating drum collector especially at high concentrations of CNTs. From crystallographic measurements, a higher degree of crystallinity was observed with increasing CNT concentrations above electrical percolation. Spectroscopy results showed that both PET and CNT orientation increased with the level of alignment of the nanofibers when the nanotube concentration was below the electrical percolation threshold; while the orientation factor was reduced for aligned nanofibers with higher content in CNT. Considerable enhancement in mechanical properties, especially tensile modulus, was found in aligned nanofibers; at least six times higher than the modulus of random nanofibers at concentrations below percolation. The effect of alignment on the mechanical properties was less important at higher concentrations of CNTs, above the percolation threshold. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 2052–2064, 2010

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Section: Raman Spectroscopymentioning

confidence: 99%

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Mazinani

Ajji

Dubois

2010

J Polym Sci B Polym Phys

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“…On the other hand, spectra with intensity of G' band compatible with the intensity of G band (IG'/IG ~ 1 or higher) indicate the presence of nanographite. Nanographites are composed or by few graphene sheets, either by turbostratic structures with distances among graphene sheets higher than at single crystals due to the curvature effects [16][17][18]. Therefore, high intensity G´ band is the signature of high quality multi-walled CNT.…”

Section: Resultsmentioning

confidence: 99%

Growth of Carbon Nanotube Forests on Carbon Fibers with a SiO₂ Interlayer

et al. 2012

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“…1. The study of the sample by the Raman spectrometer Renishaw InVia Reflex (Renishaw plc, UK) showed the presence of D-, G-, and G -modes, which is typical for multi-walled aligned carbon nanotubes [7].…”

Section: Experimental Studiesmentioning

confidence: 99%

The memristive behavior of non-uniform strained carbon nanotubes

Il’ina¹,

Il’in²,

Rudyk³

et al. 2018

Nanosystems: Phys. Chem. Math.

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It is shown that the non-uniform elastic strain is the memristive switching origin in carbon nanotubes (CNT). The dependence of the resistance ratio in high-and low-resistance states of the non-uniformly strained CNT on the value strain is obtained. The process of the strain redistribution and its effect on the conductivity of CNT under action of the external electric field strength is studied. The obtained results can be used to develop memristor structures with reproducible parameters based on non-uniformly strained of carbon nanotubes.

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Influence of diameter in the Raman spectra of aligned multi-walled carbon nanotubes

Cited by 213 publications

References 42 publications

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Growth of Carbon Nanotube Forests on Carbon Fibers with a SiO₂ Interlayer

The memristive behavior of non-uniform strained carbon nanotubes

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Influence of diameter in the Raman spectra of aligned multi-walled carbon nanotubes

Cited by 213 publications

References 42 publications

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Fundamental study of crystallization, orientation, and electrical conductivity of electrospun PET/carbon nanotube nanofibers

Growth of Carbon Nanotube Forests on Carbon Fibers with a SiO2 Interlayer

The memristive behavior of non-uniform strained carbon nanotubes

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Growth of Carbon Nanotube Forests on Carbon Fibers with a SiO₂ Interlayer