Chirality-dependent mechanical response of empty and water-filled single-wall carbon nanotubes at high pressure

Torres-Dias, Abraao C.; Cambré, Sofie; Wenseleers, Wim; Machon, Denis; San-Miguel, Alfonso

doi:10.1016/j.carbon.2015.08.032

Cited by 43 publications

(55 citation statements)

References 43 publications

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“…High pressure can modify the interaction of the host‐guest and the framework of the host matrix . Such pressure‐induced modifications may also change the behavior of the encapsulated species inside nano‐confinement circumstance.…”

Section: Resultssupporting

confidence: 58%

“…Near 6 GPa, the pressure slope changes, and a ‘plateau‐like’ occurs in the range from 6 to 10 GPa, then followed a value of 3.1 ± 0.3 cm −1 /GPa at even higher pressure. As suggested in previous studies, the plateau has been assigned as the signature of SWNTs collapse under pressure . For the nanoribbon analogs, a clear transition occurs around 6 GPa and is evidenced by the disappearance of some peaks (originally at 1238, 1263, and 1289 cm −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…It is noted that the slope of G‐band for the filled SWNTs increases above the argon solidification at around 2 GPa . The same observation was also reported by Torres‐Dias et al ., in which the slope and line width of the G‐band of the water‐filled SWCNTs increase at the water solidification (~2 GPa) in contrast with that of the empty SWNTs. They explained that G‐band is much more sensitive to the electronic structure of the nanotube wall and can easily be influenced by local inhomogeneous interactions with the frozen environment , resulting in the observed slope change and broadening of G‐band.…”

Section: Resultsmentioning

confidence: 99%

“…After filling GNRAs, the collapse pressure for the tubes has been observed varying from 6 to 10 GPa and from 7 to 11 GPa for methanol–ethanol mixture and argon as PTM, respectively. It has been reported in several studies that the collapse pressure of tubes is dependent on the PTM . However, our experiments show that methanol–ethanol mixture and argon as PTM give similar collapse pressure values, indicating that the collapse transition is independent on the nature of the PTM.…”

Section: Resultsmentioning

confidence: 99%

“…To study the effect of different fillers on the mechanical stability of nanotubes, we compare the collapse pressure of nanotubes (similar diameter) with different fillers, e.g. iodine, water, fullerenes, and argon, as shown in Table . We note that C 60, argon and water filling can support against collapse of nanotubes, leading to higher transition pressure.…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Raman study of graphene nanoribbon analogs confined in single‐walled carbon nanotubes and their high‐pressure transformations

Yang

Yao

Zhang

et al. 2017

J Raman Spectroscopy

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Single wall carbon nanotubes with a diameter distribution from 1.30 to 1.55 nm filled with perylene molecules were synthesized via a vapor‐phase encapsulation method. The perylene molecules formed short‐chain nanoribbon analogs inside the tubes by polymerization. The polymerization of perylene molecules is found to be dependent on the annealing temperature and thus the length of the formed nanoribbons. High‐pressure transformation of the formed hybrid nanostructure has been studied by means of Raman spectroscopy combined with theoretical simulation. It is found that the encapsulated nanoribbon analogs can act as a probe for identifying the structural transitions of the host nanotubes. In comparison to empty carbon nanotube, filling with nanoribbon analogs into the nanotubes decreases the collapse pressure of the nanotubes, which can be explained in terms of their inhomogeneous interactions between the fillers and carbon nanotubes. Our theoretical calculation gives further insight into the experimental observations. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Resultssupporting

confidence: 58%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Raman study of graphene nanoribbon analogs confined in single‐walled carbon nanotubes and their high‐pressure transformations

Yang

Yao

Zhang

et al. 2017

J Raman Spectroscopy

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Strain‐ and torsion‐induced resonance energy tuning of Raman scattering in single‐wall carbon nanotubes

Nikolić

Damnjanović

Milošević

2016

Physica Status Solidi (b)

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Raman excitation profiles for homogeneously deformed single‐walled carbon nanotubes are calculated and systematically analyzed. A number of attractive and apparent effects significant in designing electromechanical devices are caused by torsion and uniaxial strain. The shift of radial breathing mode (RBM) phonon energies due to deformation is negligible. The linear dependence of electronic transition energy shift on deformation is confirmed and it is found that the slope of it is strongly related to the chiral angle of the tube. It is also shown that for some tubes the transition energy shift covers the entire visible‐light interval, making them perfectly tunable light absorbers. Two types of deformation are compared, a relaxed (slow) deformation and an adiabatic (fast) one. It is found that transition energies are more sensitive to adiabatic deformation, which can be useful for optomechanical device designing. Raman excitation profile of a (9,9) nanotube under torsion.

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High‐pressure optical study of small‐diameter chirality‐enriched single‐wall carbon nanotubes

Krottenmüller

Gao

Anis

et al. 2016

Physica Status Solidi (b)

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We have investigated the mechanical stability of small‐diameter single‐wall carbon nanotube (SWCNT) films via optical absorption spectroscopy under high pressure. The studied sample was enriched in (6,5) SWCNTs, in order to observe sharp optical transitions even at high pressures. We observed two well‐defined absorption bands in the studied frequency range, both of which red‐shifted with increasing pressure. The rate of the pressure‐induced red shift of one absorption band was found to change dramatically at 8 GPa, which we interpret as a structural phase transition of the nanotubes’ cross‐section from circular to oval. By comparing the data with that for a film of mixed‐chirality SWCNTs with an average diameter of 1.4 nm, we conclude that smaller‐diameter SWCNTs have higher mechanical stability, which is consistent with theoretical expectations. No collapse of (6,5) SWCNTs was observed up to 22 GPa.

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Chirality-dependent mechanical response of empty and water-filled single-wall carbon nanotubes at high pressure

Cited by 43 publications

References 43 publications

Raman study of graphene nanoribbon analogs confined in single‐walled carbon nanotubes and their high‐pressure transformations

Raman study of graphene nanoribbon analogs confined in single‐walled carbon nanotubes and their high‐pressure transformations

Strain‐ and torsion‐induced resonance energy tuning of Raman scattering in single‐wall carbon nanotubes

High‐pressure optical study of small‐diameter chirality‐enriched single‐wall carbon nanotubes

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