Results 321 to 330 of about 416,782 (338)
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Deformation of carbon nanotubes in nanotube–polymer composites
Applied Physics Letters, 1999Composites of uniaxially oriented multiwalled carbon nanotubes embedded in polymer matrices were fabricated and investigated by transmission electron microscopy. In strained composite films, buckling was ubiquitously observed in bent nanotubes with large curvatures. By analyses of a large number of bent nanotubes, the onset buckling strain and fracture
Otto Zhou +4 more
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Contact Transparency of Nanotube-Molecule-Nanotube Junctions
Physical Review Letters, 2007The transparency of contacts between conjugated molecules and metallic single-walled carbon nanotubes is investigated using a single-particle Green's function method which combines a Landauer approach with ab initio density functional theory. We find that the overall conjugation required for good contact transparency is broken by connecting through a ...
Weitao Yang +2 more
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ACS Nano, 2012
In this work, one-dimensional graphane nanotubes (GN, stoichiometry CH), built from 2D single-sheet graphanes, are explored theoretically. Zigzag type GN(10,0) and armchair type GN(10,10) structures with varying surface termination were investigated in detail.
Xiao-Dong, Wen +6 more
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In this work, one-dimensional graphane nanotubes (GN, stoichiometry CH), built from 2D single-sheet graphanes, are explored theoretically. Zigzag type GN(10,0) and armchair type GN(10,10) structures with varying surface termination were investigated in detail.
Xiao-Dong, Wen +6 more
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Chemistry of Materials, 2013
The synthesis of polysiloxane nanotubes using trifunctional organosilanes is reported. Tubular nanostructures were formed via a chemical vapor deposition technique at room temperature when ethyltrichlorosilane is used or via a liquid phase method when methyltriethoxysilane is used as precursor.
Stojanovic Ana +3 more
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The synthesis of polysiloxane nanotubes using trifunctional organosilanes is reported. Tubular nanostructures were formed via a chemical vapor deposition technique at room temperature when ethyltrichlorosilane is used or via a liquid phase method when methyltriethoxysilane is used as precursor.
Stojanovic Ana +3 more
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ChemPhysChem, 2005
AbstractA survey of novel classes of nanotubular materials based on boron is presented. Pure boron nanotubes are a consequence of a general Aufbau principle for boron clusters and solid boron phases, which postulates various novel boron materials besides the well‐known bulk phases of boron based on boron icosahedra.
Alexander, Quandt, Ihsan, Boustani
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AbstractA survey of novel classes of nanotubular materials based on boron is presented. Pure boron nanotubes are a consequence of a general Aufbau principle for boron clusters and solid boron phases, which postulates various novel boron materials besides the well‐known bulk phases of boron based on boron icosahedra.
Alexander, Quandt, Ihsan, Boustani
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Effect of nanotube-nanotube coupling on the radial breathing mode of carbon nanotubes
Physical Review B, 2008We study the radial breathing mode (RBM) of resonant single walled carbon nanotubes within individual bundles. As strain is applied, significant debundling of the nanotubes occurs, causing an upshift in the RBM frequency. The RBM frequency is found to change irreversibly with strain, correlating more strongly with the total number of strains and ...
Rajay Kumar +2 more
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The Journal of Physical Chemistry Letters, 2015
A new type of carbon nanotube, based on the graphenylene motif, is investigated using density functional and tight-binding methods. Analogous to conventional graphene-based nanotubes, a two-dimensional graphenylene sheet can be "rolled" into a seamless cylinder in armchair, zigzag, or chiral orientations.
Andrew T, Koch +4 more
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A new type of carbon nanotube, based on the graphenylene motif, is investigated using density functional and tight-binding methods. Analogous to conventional graphene-based nanotubes, a two-dimensional graphenylene sheet can be "rolled" into a seamless cylinder in armchair, zigzag, or chiral orientations.
Andrew T, Koch +4 more
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Carbon, 2004
Density functional theory is used to study carbon nanotubes grown inside a channel-like environment. Two types of systems were investigated: the zigzag nanotubes inside AlPO4-5 zeolite (AFI) channels and the achiral double-walled nanotubes. In this work the energetical stability of the selected systems is evaluated and the shifting and splitting of the
Georg Kresse, O. Dubay
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Density functional theory is used to study carbon nanotubes grown inside a channel-like environment. Two types of systems were investigated: the zigzag nanotubes inside AlPO4-5 zeolite (AFI) channels and the achiral double-walled nanotubes. In this work the energetical stability of the selected systems is evaluated and the shifting and splitting of the
Georg Kresse, O. Dubay
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Physics Today, 1994
Carbon is an extraordinary element, considering the diversity of materials it forms. Ranging from sparkling gems to sooty filth, these materials have been studied and used for centuries, and carbon science was long thought to be a mature field. So when a whole new class of carbon materials—the fullerenes, such as C60—appeared in the last decade, many ...
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Carbon is an extraordinary element, considering the diversity of materials it forms. Ranging from sparkling gems to sooty filth, these materials have been studied and used for centuries, and carbon science was long thought to be a mature field. So when a whole new class of carbon materials—the fullerenes, such as C60—appeared in the last decade, many ...
openaire +1 more source