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
Citations
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Journal ArticleDOI
Compression of nanomaterials under pressure
Jeewan Chandra,Kuldeep Kholiya +1 more
TL;DR: In this paper, a simple equation of state (EOS) model is proposed to predict the high pressure compression behavior of nanomaterials, based on the fact that the product of the thermal expansion coefficient (α ) and the bulk modulus (B T ) remains constant under pressure.
Book ChapterDOI
Properties of Carbon Nanotubes under External Factors
TL;DR: In this paper, the effects of radial deformation on carbon nanotubes with defects and external electric fields are discussed. But the authors focus on the physical properties of single wall carbon nano-nanotubes under two external factors: mechanical deformations and external magnetic fields.
Journal ArticleDOI
New boron nitride monolith phases from high-pressure compression of double-walled boron nitride nanotubes.
TL;DR: In this paper, the phase transition behavior of hexagonal bundles of double-walled (DW) BNNTs of different chirality and diameters under hydrostatic pressures of up to 60 GPa was revealed.
Journal ArticleDOI
The radial breathing-like mode of the collapsed Single-walled carbon nanotube bundle under hydrostatic pressure
TL;DR: In this paper, the vibrational modes and Raman spectra of a (10, 10) single-walled carbon nanotube (SWNT) bundle under hydrostatic pressure were studied.
Journal ArticleDOI
High pressure studies of the radial breathing modes in double-wall carbon nanotubes
TL;DR: In this paper, the authors focused on the high pressure Raman study of the radial breathing modes (RBMs) of bundled double-wall carbon nanotubes (DWCNTs) using different excitation energies.