TITLE

Octagraphene as a versatile carbon atomic sheet for novel nanotubes, unconventional fullerenes, and hydrogen storage

AUTHOR(S)
Sheng, Xian-Lei; Cui, Hui-Juan; Ye, Fei; Yan, Qing-Bo; Zheng, Qing-Rong; Su, Gang
PUB. DATE
October 2012
SOURCE
Journal of Applied Physics;Oct2012, Vol. 112 Issue 7, p074315
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We study a versatile structurally favorable periodic sp2-bonded carbon atomic planar sheet with C4v symmetry by means of the first-principles calculations. This carbon allotrope is composed of carbon octagons and squares with two bond lengths and is thus dubbed as octagraphene. It is a semimetal with the Fermi surface consisting of one hole and one electron pocket, whose low-energy physics can be well described by a tight-binding model of π-electrons. Its Young's modulus, breaking strength, and Poisson's ratio are obtained to be 306 N/m, 34.4 N/m, and 0.13, respectively, which are close to those of graphene. The novel sawtooth and armchair carbon nanotubes as well as unconventional fullerenes can also be constructed from octagraphene. It is found that the Ti-absorbed octagraphene can be allowed for hydrogen storage with capacity around 7.76 wt. %.
ACCESSION #
82713124

 

Related Articles

  • Synthesis and Optimization of MWCNTs on Co-Ni/MgO by Thermal CVD. Ryu, H.; Singh, B. K.; Bartwal, K. S. // Advances in Condensed Matter Physics;2008, p1 

    Multiwalled carbon nanotubes (MWCNTs) were prepared by the thermal chemical vapor deposition (CVD) technique. Monometallic and bimetallic Co and Ni combinations were used as a catalyst on MgO support. The mixer of H2/C2H2 was used as a carbon source. The prepared CNTs were found to possess...

  • Nonlinear Optical Response in Single-Walled Carbon Nanotubes under Resonant Excitation Conditions. Takahashi, Y.; Kishida, H.; Nakamura, A. // AIP Conference Proceedings;1/4/2010, Vol. 1199 Issue 1, p541 

    Third-order nonlinear optical responses in single walled carbon nanotubes have been investigated by means of pump-probe spectroscopy with various excitation conditions. In the excitation spectra of nonlinear susceptibilities probed at the E22 transition energy of the (8, 4) tube, an additional...

  • High temperature electrical resistance of substrate-supported single walled carbon nanotubes. Avedisian, C. Thomas; Cavicchi, Richard E.; McEuen, Paul M.; Xinjian Zhou; Hurst, Wilbur S.; Hodges, Joseph T. // Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p252108 

    We report the electrical characteristics of substrate-supported metallic single walled carbon nanotubes at temperatures up to 573 K over a range of bias voltages (Vb) for zero gate voltage in air under atmospheric pressure. Our results show a monotonic increase in resistance with temperature,...

  • An ultrafast carbon nanotube terahertz polarisation modulator. Docherty, Callum J.; Stranks, Samuel D.; Habisreutinger, Severin N.; Joyce, Hannah J.; Herz, Laura M.; Nicholas, Robin J.; Johnston, Michael B. // Journal of Applied Physics;2014, Vol. 115 Issue 20, p203108-1 

    We demonstrate ultrafast modulation of terahertz radiation by unaligned optically pumped single-walled carbon nanotubes. Photoexcitation by an ultrafast optical pump pulse induces transient terahertz absorption in nanowires aligned parallel to the optical pump. By controlling the polarisation of...

  • Silver-nanoprism solution functions as an optical limiter.  // Laser Focus World;Sep2008, Vol. 44 Issue 9, p17 

    The article reports on the research conducted by the scientists at the National University of Singapore regarding the implication of silver-nanoprism solution in Singapore. They created an optical limiter based on silver nanoprisms that bests the performance of carbon nanotubes (CNT) and found...

  • STRONG CORRELATION EFFECTS IN SINGLE-WALL CARBON NANOTUBES. CARR, SAM T. // International Journal of Modern Physics B: Condensed Matter Phys;12/10/2008, Vol. 22 Issue 30, p5235 

    We present an overview of strong correlations in single-wall carbon nanotubes, and an introduction to the techniques used to study them theoretically. We concentrate on zigzag nanotubes, although universality dictates that much of the theory can also be applied to armchair or chiral nanotubes....

  • First-principles study for transport properties of armchair carbon nanotubes with a double vacancy under strain. Li, Zi; Wang, Chong-Yu; Zhang, Xu; Ke, San-Huang; Yang, Weitao // Journal of Applied Physics;Jun2008, Vol. 103 Issue 11, p113714 

    Vacancies are one of the most important defects in carbon nanotubes (CNTs). Vacancies could affect the mechanical, chemical, and electronic properties of CNTs. In this study, we first use first-principles plane-wave calculation to optimize the structure of single-walled CNTs with a double...

  • Thermal stability and formation barrier of a high-energetic material N8 polymer nitrogen encapsulated in (5,5) carbon nanotube. Wei Ji; Timoshevskii, V.; Guo, H.; Abou-Rachid, Hakima; Lussier, Louis-Simon // Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p021904 

    We report the density functional theory total energy calculations of thermal stability and formation barrier of polymer nitrogen confined in carbon nanotubes (CNT). The analysis suggests that N8 polymer nitrogen encapsulated in (5,5) carbon nanotube [N8@CNT(5,5)] is thermally (meta)stable at a...

  • Fabrication of carbon-nanotube-based sensor array and interference study. Yijang Lu; Meyyappan, M.; Jing Li // Journal of Materials Research;8/28/2011, Vol. 26 Issue 16, p2017 

    An array of 32 sensor elements with single-walled carbon nanotubes (SWCNTs) as the sensing medium has been fabricated. The microfabrication approach used allows reduction of the chip size and increases the number of sensor elements in a chip and is amenable for large wafer scale-up. The sensor...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics