Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy

You, Shujie; Mases, Mattias; Dobryden, Illia; Green, Alexander A.; Hersam, Mark C.; Солдатов, А. В.

doi:10.1080/08957959.2011.562897

Cited by 19 publications

(23 citation statements)

References 7 publications

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“…Moreover, as pointed out before, the R5 peak also disappears at $5.2 GPa. Similar results for the RBLMs have been obtained by Shujie et al [39] for the collapse of the outer tubes with different diameters. Our observation of a maximum value of FWHM of the G-band components at 3e4 GPa, would then correspond with the highest degree of disorder due to mixing between pristine and collapsed geometries.…”

Section: Experimental Characterizationsupporting

confidence: 88%

“…Other dynamic high-pressure experiments found that only minor tube structure damage occurs below 19 GPa, with the collapse of the double-wall CNT occurring at $ 26 GPa [37]. However, other works which considered similar diameter distributions reported collapse or large structural modifications at different pressures ranging from $ 13e15 GPa [18,38] to $ 25 GPa [17,39]. Such important discrepancies can be attributed to the difficulty in working with double-wall CNT samples, mainly due to the large diameter distribution, the effect of the environment on the resonance conditions, and the presence of defects, which depend on synthesis, preparation and handling of the samples.…”

Section: Introductionmentioning

confidence: 95%

“…Experimental and theoretical studies have shown that the change of sign of the pressure derivative of the G-band marks the beginning of the radial collapse of the tube [14,15,17,54]. The loss of RBM resonances is attributed in literature either to a change in resonance conditions [22,39,52,53] or to a drastic cross-section deformation, or even to the collapse of the CNT [14,39,51]. We observed a change of sign of the pressure derivatives for all G-band components of our double-wall CNTs at $1 GPa.…”

Section: Experimental Characterizationmentioning

confidence: 99%

“…The collapse pressures obtained experimentally in our work and in Refs. [17] and [39] are also included in the graph. The large incertitudes in the experimental points at low diameters arise both from incertitudes in the collapse pressure and on the tube diameter determination.…”

Section: Experimental Characterizationmentioning

confidence: 99%

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Pressure-induced radial collapse in few-wall carbon nanotubes: A combined theoretical and experimental study

Alencar

Cui

Torres-Dias

et al. 2017

Carbon

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We study the pressure induced collapse of single-, double-and triple-wall carbon nanotubes. Theoretical simulations were performed using density-functional tight-binding theory. For tube walls separated by the graphitic distance, we show that the radial collapse pressure, P c , is mainly determined by the diameter of the innermost tube, d in and that its value significantly deviates from the usual P c f d À3 in L evy-Carrier law. A modified expression, P c d À3 in ¼ að1 À b 2 ∕ d 2 in Þ with a and b numerical parameters, which reduces the collapse pressure for low diameters is proposed. For d in a 1.5 nm an enhanced stability is found which may be assigned as due to the bundle intertube geometry-induced interactions. If the inner and outer tubes are separated by larger distances, the collapse process is found to be more complex. High-pressure resonant Raman experiments were performed in double-wall carbon nanotubes having inner and outer diameters averaging 1.5 nm and 2.0 nm, respectively. A modification in the response of the G-band and the disappearance of the radial breathing modes between 2 GPa and 5 GPa indicate the beginning and the end of the radial collapse process. Experimental results are in good agreement with our theoretical predictions, but do not allow to discriminate from those corresponding to a continuum mechanics model.

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Section: Experimental Characterizationsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 95%

Section: Experimental Characterizationmentioning

confidence: 99%

Section: Experimental Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Pressure-induced radial collapse in few-wall carbon nanotubes: A combined theoretical and experimental study

Alencar

Cui

Torres-Dias

et al. 2017

Carbon

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“…Several earlier experimental studies (mostly Raman) reported higher critical pressures for the structural transition of the outer tube in DWCNTs as compared to SWCNTs, and this was attributed to the structural support of the outer tube by the inner tube. 7,30,34 The enhanced structural stability of the outer tube was theoretically predicted by Yang et al 35 : For small-diameter (5,5)(10,10) DWCNT bundles (d inner ≈0.68 nm, d outer ≈1.36 nm) a small discontinuous volume change appears at the critical pressure P d =18 GPa, accompanied by a cross sections' change between two deformed hexagons; the collapse to peanut shaped cross sections, however, happens at higher pressure. In contrast, (7,7)(12,12) DWCNT bundles (d inner ≈0.95 nm, d outer ≈1.63 nm) undergo one structural phase transition and collapse at P d =10.6 GPa.…”

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confidence: 99%

Stabilization of carbon nanotubes by filling with inner tubes: An optical spectroscopy study on double-walled carbon nanotubes under hydrostatic pressure

et al. 2012

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The stabilization of carbon nanotubes via the filling with inner tubes is demonstrated by probing the optical transitions in double-walled carbon nanotube bundles under hydrostatic pressure with optical spectroscopy. Double-walled carbon nanotube films were prepared from fullerene peapods and characterized by HRTEM and optical spectroscopy. In comparison to single-walled carbon nanotubes, the pressure-induced redshifts of the optical transitions in the outer tubes are significantly smaller below ∼10 GPa, demonstrating the enhanced mechanical stability due to the inner tube already at low pressures. Anomalies at the critical pressure P d ≈12 GPa signal the onset of the pressure-induced deformation of the tubular cross-sections. The value of P d is in very good agreement with theoretical predictions of the pressure-induced structural transitions in double-walled carbon nanotube bundles with similar average diameters.

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The effect of shock wave compression on double wall carbon nanotubes

Mases

Milyavskiy

Waldbock

et al. 2012

Physica Status Solidi (b)

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Double wall carbon nanotubes (DWCNTs) have proven to have a very good structural stability when exposed to high static pressures. We report here on the study of DWCNTs after application of shock wave (dynamic) compression up to 36 GPa in a recovery assembly. TEM images of so‐treated samples reveal a threshold between 19 and 26 GPa of shock wave compression above which significant structural damage is induced whereas only minor damage can be detected below. The threshold detected with TEM coincides well with the collapse pressure of DWCNTs previously reported [You et al., High Press. Res. 31, 186 (2011); Aguiar et al., Phys. Chem. C 115, 5378 (2011)]. Raman data demonstrate a gradual accumulation of structural defects via an increase in D‐band to G‐band intensity ratio (ID/IG‐ratio) from ∼0.2 to ∼0.8 in going from the source CNT material to the nanotubes after compression to 36 GPa. Despite severe damage; the DWCNTs exposed to 36 GPa of shock wave compression survived which is evidenced by Raman spectra. The DWCNTs demonstrate a higher susceptibility to structural damage under dynamic than static pressure.

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Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy

Cited by 19 publications

References 7 publications

Pressure-induced radial collapse in few-wall carbon nanotubes: A combined theoretical and experimental study

Pressure-induced radial collapse in few-wall carbon nanotubes: A combined theoretical and experimental study

Stabilization of carbon nanotubes by filling with inner tubes: An optical spectroscopy study on double-walled carbon nanotubes under hydrostatic pressure

The effect of shock wave compression on double wall carbon nanotubes

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