Synthesis and Raman spectroscopic characterisation of carbon nanoscrolls

Roy, Debdulal; Angeles-Tactay, E.; Brown, Richard; Spencer, Steve J.; Fry, A T; Dunton, Thomas A.; Young, Thomas M.; Milton, M J T

doi:10.1016/j.cplett.2008.09.044

Cited by 41 publications

(41 citation statements)

References 19 publications

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“…Carbon nanoscroll (CNS) [1][2][3][4][5] is a spirally wrapped 2D graphene sheet with a 1D tubular structure resembling that of a multi-walled carbon nanotube (MWCNT). Because of its unique topology and unusual electronic [6,7] and optical [8] properties, CNS has attracted significant interests in the past few years and is currently considered as a promising material for chemical deposition [9], hydrogen storage [10,11], supercapacitors and batteries [9], nanoactuators and nanomechanical devices [7,9].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanoscrolls fabricated from graphene nanoribbons using Ni nanowire templates: A molecular dynamics simulation

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Carbon nanoscrolls fabricated from graphene nanoribbons using Ni nanowire templates: A molecular dynamics simulation

et al. 2015

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“…Carbon nanoscrolls (CNSs) have attracted significant interests in recent years (Viculis et al 2003;Xie et al 2009;Savoskin et al 2007;Roy et al 2008;Chuvilin et al 2009;Shioyama and Akita 2003). Unlike the tubular structure of carbon nanotubes (CNT), a CNS is made of a continuous basal graphene sheet rolled up in a spiral form.…”

Section: Introductionmentioning

confidence: 99%

Constitutive behavior of pressurized carbon nanoscrolls

2010

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Carbon nanoscrolls (CNSs) are a class of graphene-based nanoscale materials with great potential for applications in nanotechnology and bioengineering. Fundamental description, understanding and regulation of these materials may ultimately lead to a new generation of integrated systems that utilize their unique properties. A particularly interesting property of a CNS is that there exists a stable equilibrium core size which can be uniquely determined from the basal graphene length, the interlayer spacing, the interaction energy between layers, the bending stiffness of graphene, as well as the difference between the pressure inside the core of the CNS and that on its outer surface. Here we investigate the strongly nonlinear constitutive behaviour of a CNS under pressure, focusing on its deformation, stability and biaxial modulus in response to its inner and external pressures. Our study suggests pressure sensitive applications of CNSs such as nanopumps and nanofilters.

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“…Several experimental techniques for obtaining and study of CNS have been reported. [7][8][9][10][11][12][13][14] Properties of CNS have also been studied in a series of theoretical investigations. Electrical, optical and mechanical properties of short CNS have been described from ab initio calculations.…”

Section: Introductionmentioning

confidence: 99%

Scroll configurations of carbon nanoribbons

2015

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Carbon nanoscroll is a unique topologically open configuration of graphene nanoribbon possessing outstanding properties and application perspectives due to its morphology. However molecular dynamics study of nanoscrolls with more than a few coils is limited by computational power. Here, we propose a simple model of the molecular chain moving in the plane, allowing to describe the folded and rolled packaging of long graphene nanoribbons. The model is used to describe a set of possible stationary states and the low-frequency oscillation modes of isolated single-layer nanoribbon scrolls as the function of the nanoribbon length. Possible conformational changes of scrolls due to thermal fluctuations are analyzed and their thermal stability is examined. Using the full-atomic model, frequency spectrum of thermal vibrations is calculated for the scroll and compared to that of the flat nanoribbon. It is shown that the density of phonon states of the scroll differs from the one of the flat nanoribbon only in the low (ω < 100 cm −1 ) and high (ω > 1450 cm −1 ) frequency ranges. Finally, the linear thermal expansion coefficient for the scroll outer radius is calculated from the long-term dynamics with the help of the developed planar chain model. The scrolls demonstrate anomalously high coefficient of thermal expansion and this property can find new applications.

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Synthesis and Raman spectroscopic characterisation of carbon nanoscrolls

Cited by 41 publications

References 19 publications

Carbon nanoscrolls fabricated from graphene nanoribbons using Ni nanowire templates: A molecular dynamics simulation

Carbon nanoscrolls fabricated from graphene nanoribbons using Ni nanowire templates: A molecular dynamics simulation

Constitutive behavior of pressurized carbon nanoscrolls

Scroll configurations of carbon nanoribbons

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