Journal ArticleDOI
Compressibility and Polygonization of Single-Walled Carbon Nanotubes under Hydrostatic Pressure
Jie Tang,Lu Chang Qin,Taizo Sasaki,Masako Yudasaka,Akiyuki Matsushita,Sumio Iijima,Sumio Iijima +6 more
TLDR
Theoretical calculations suggest that single-walled carbon nanotubes are polygonized when they form bundles of hexagonal close-packed structure and the intertubular gap is smaller than the equilibrium spacing of graphite.Abstract:
Single-walled carbon nanotubes show linear elasticity under hydrostatic pressure up to 1.5 GPa at room temperature. The volume compressibility, measured by in situ synchrotron x-ray diffraction, has been determined to be $0.024\mathrm{GPa}{}^{\ensuremath{-}1}$. Theoretical calculations suggest that single-walled carbon nanotubes are polygonized when they form bundles of hexagonal close-packed structure and the intertubular gap is smaller than the equilibrium spacing of graphite (002) $(d\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}3.35\phantom{\rule{0ex}{0ex}}\AA{})$. It has also been determined that the deformation of the trigonal nanotube lattice under hydrostatic pressure is reversible up to 4 GPa, beyond which the nanotube lattice is destroyed.read more
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Journal ArticleDOI
Mesomechanics of multiwall carbon nanotubes and nanowhiskers
TL;DR: In this article, the structural anisotropy contributes significantly to the mechanical properties of carbon nanotubes and nanowhiskers and it is demonstrated that the rod systems, beginning with those of nanometer cross-sections, can be described by conventional methods of continuum mechanics.
Journal ArticleDOI
Radial deformation measurements of isolated pairs of single-walled carbon nanotubes
Ze'ev R. Abrams,Yael Hanein +1 more
TL;DR: In this article, high-resolution transmission electron microscope images were used to directly image and verify the radial deformations due to the interactions between isolated pairs of nanotubes and is compared to previously reported experimental and simulation results.
Journal ArticleDOI
Light scattering of double wall carbon nanotubes under hydrostatic pressure: pressure effects on the internal and external tubes
Pascal Puech,H. Hubel,David J. Dunstan,Ayman Bassil,Revathi Bacsa,Alain Peigney,Emmanuel Flahaut,Christophe Laurent,Wolfgang Bacsa +8 more
TL;DR: In this article, high-pressure Raman light scattering studies up to 10 GPa on double walled carbon nanotubes using two pressure transmitting media were performed and a clear splitting of the G band was observed.
Journal ArticleDOI
Stability of single-walled carbon nanopeapods under combined axial compressive load and external pressure
Ali Najafi Sohi,Reza Naghdabadi +1 more
TL;DR: In this article, the axial stability of single-walled carbon nanopeapods is studied based on an elastic continuum shell model and an equivalent pressure distribution is proposed and incorporated in the model.
Temperature Dependence of Radial Breathing Mode Raman Frequency of Single-Walled Carbon Nanotubes
Nachiket R. Raravikar,Pawel Keblinski,Apparao M. Rao,Mildred S. Dresselhaus,Linda S. Schadler,Pulickel M. Ajayan +5 more
TL;DR: In this paper, the authors estimate the contributions from three factors that may be responsible for the observed temperature dependence of the radial breathing mode frequency, including thermal expansion of individual SWNTs in the radial direction, softening of the C-C (intratubular) bonds, and softens of the van der Waals intertubular interactions in SWNT bundles.