Interlayer Interaction Effects on the G Modes in Double‐Walled Carbon Nanotubes With Different Electronic Configurations

Levshov, Dmitry; Tran, Huy-Nam; Michel, Thierry; Cao, Thi Thanh; Nguyen, Van Lap; Arenal, Raúl; Popov, V. N.; Sauvajol, Jean‐Louis; Zahab, Ahmed-Azmi; Paillet, Matthieu

doi:10.1002/pssb.201700251

Cited by 11 publications

(34 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Fig. 7, we compare our theoretical data for the G − -band shifts (solid circles) with experimental ones obtained (i) on several C 60 -derived DWNTs 16 (green open triangles), and (ii) on individual suspended indexidentified CVD-DWNTs 21,23 (red open circles). Fig.…”

Section: Comparison To Experimentsmentioning

confidence: 96%

“…16 G-band shifts have also been measured on individual suspended DWNTs, produced by the catalytic chemical vapor deposition (CVD) method and structurally characterized using electron microscopy, electron diffraction and Raman spectrocopy. 9,[20][21][22][23] To our knowledge, systematic theoretical investigation of the G-band shift in DWNTs has not been reported so far, while theoretical data on this shift can be important for supporting the characterization of the DWNTs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computational study of the shift of the G band of double-walled carbon nanotubes due to interlayer interactions

et al. 2018

Self Cite

View full text Add to dashboard Cite

The interactions between the layers of double-walled carbon nanotubes induce measurable shift of the G bands relative to the isolated layers. While experimental data on this shift in free-standing double-walled carbon nanotubes has been reported in the past several years, comprehensive theoretical description of the observed shift is still lacking. The prediction of this shift is important for supporting the assignment of the measured double-walled nanotubes to particular nanotube types. Here, we report a computational study of the G-band shift as a function of the semiconducting inner layer radius and interlayer separation. We find that with increasing interlayer separation, the G band shift decreases, passes through zero and becomes negative, and further increases in absolute value for the wide range of considered inner layer radii. The theoretical predictions are shown to agree with the available experimental data within the experimental uncertainty.

show abstract

Section: Comparison To Experimentsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Computational study of the shift of the G band of double-walled carbon nanotubes due to interlayer interactions

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…[19,23] Finally, the main consequence of the large effective pressure in DWCNTs is the G-mode splitting as a function of interlayer distance (Figure 4e). [60] The splitting is negligible in DWCNTs with Δr ≈ 0.335 nm (top panel in Figure 4e) but grows significantly at large intertube separations (0.349 and 0.366 nm in the middle and bottom panels of Figure 4e, respectively).…”

Section: And the Interlayer Twist Anglementioning

confidence: 98%

“…[3] This should be further discussed in comparison to the case of DWCNTs, taking into account the difference in thermal expansion coefficients of graphene and h-BN. [60] More straightforward signatures can be obtained by Raman spectroscopy. Jeong et al have fabricated highly porous, freestanding heterostructures of SWCNT/h-BN by the pyrolysis of SWCNTs/B 2 O 3 hydrogel under nitrogen atmosphere at 1000 °C.…”

Section: Heterostructures Of Carbon Nanotubes Coated By Hexagonal Boron Nitridementioning

confidence: 99%

See 1 more Smart Citation

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Cambré

Liu

Levshov

et al. 2021

Small

View full text Add to dashboard Cite

1D van der Waals heterostructures based on carbon nanotube templates are raising a lot of excitement due to the possibility of creating new optical and electronic properties, by either confining molecules inside their hollow core or by adding layers on the outside of the nanotube. In contrast to their 2D analogs, where the number of layers, atomic type and relative orientation of the constituting layers are the main parameters defining physical properties, 1D heterostructures provide an additional degree of freedom, i.e., their specific diameter and chiral structure, for engineering their characteristics. The current state-of-the-art in synthesizing 1D heterostructures are discussed here, in particular focusing on their resulting optical properties, and details the vast parameter space that can be used to design heterostructures with custombuilt properties that can be integrated into a large variety of applications. First, the effects of van der Waals coupling on the properties of the simplest and best-studied 1D heterostructure, namely a double-walled carbon nanotube, are described, and then heterostructures built from the inside and the outside are considered, which all use a nanotube as a template, and, finally, an outlook is provided for the future of this research field.

show abstract

Efficient Growth of 1D Van der Waals Heterostructures on Zeolite‐Supported SWCNTs

Zhang,

Levshov,

Otsuka

et al. 2024

Small

View full text Add to dashboard Cite

The controlled synthesis of 1D van der Waals (1D vdW) heterostructures, specifically single‐walled carbon nanotubes encapsulated within boron nitride nanotubes (SWCNT@BNNT), presents a challenge due to an incomplete understanding of the factors influencing BNNT growth. This study investigates the growth yield of SWCNT@BNNT heterostructures produced using zeolite‐supported SWCNT templates on SiO2‐coated Transmission Electron Microscopy (TEM) grids, which enable in situ synthesis and thorough evaluation of each step without compromising the nanotube structure. The high‐resolution TEM analysis reveals a significant improvement in BNNT coverage on individual nanotubes, increasing from 9% to 42%, through optimization of the ammonia borane precursor amount. A thorough comparison of BNNT growth efficiency is performed using zeolite‐supported SWCNT templates against the current benchmark of free‐standing SWCNT films, highlighting comparable synthesis yields despite different morphologies and SWCNT diameter distributions. By integrating all Raman and TEM data from the studied SWCNT@BNNT samples, a correlation between BNNT coverage and the intensity of the buckling R‐mode of BNNTs is established, providing a reliable criterion for evaluating BNNT growth efficiency in 1D vdW heterostructures. This work advances the understanding and characterization of 1D vdW heterostructures, offering insights into synthesizing hetero‐nanotubes using other types of SWCNT templates and paving the way for their diverse applications.

show abstract

Interlayer Interaction Effects on the G Modes in Double‐Walled Carbon Nanotubes With Different Electronic Configurations

Cited by 11 publications

References 25 publications

Computational study of the shift of the G band of double-walled carbon nanotubes due to interlayer interactions

Computational study of the shift of the G band of double-walled carbon nanotubes due to interlayer interactions

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Efficient Growth of 1D Van der Waals Heterostructures on Zeolite‐Supported SWCNTs

Contact Info

Product

Resources

About