DOI QR코드

DOI QR Code

Radial deformation and band-gap modulation of pressurized carbon nanotubes

  • Taira, Hisao (Division of Engineering and Policy for Sustainable Environment, Faculty of Engineering, Hokkaido University) ;
  • Shima, Hiroyuki (Department of Environmental Sciences & Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi) ;
  • Umeno, Yoshitaka (Institute of Industrial Science, The University of Tokyo) ;
  • Sato, Motohiro (Division of Engineering and Policy for Sustainable Environment, Faculty of Engineering, Hokkaido University)
  • 투고 : 2013.05.01
  • 심사 : 2013.07.17
  • 발행 : 2013.06.25

초록

We numerically investigate the electronic band structure of carbon nanotubes (CNTs) under radial corrugation. Hydrostatic pressure application to CNTs leads to a circumferential wave-like deformation of their initially circular cross-sections, called radial corrugations. Tight-binding calculation was performed to determine the band gap energy as a function of the amplitude of the radial corrugation. We found that the band gap increased with increasing radial corrugation amplitude; then, the gap started to decline at a critical amplitude and finally vanished. This non-monotonic gap variation indicated the metal-semiconductor-metal transition of CNTs with increasing corrugation amplitude. Our results provide a better insight into the structure-property relation of CNTs, thus advancing the CNT-based device development.

키워드

참고문헌

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피인용 문헌

  1. KALEIDOSCOPIC MODE CHANGE IN CROSS-SECTIONAL DEFORMATION OF REINFORCED CARBON NANOTUBES vol.27, pp.31, 2013, https://doi.org/10.1142/S0217979213501798
  2. An analytical study on the nonlinear vibration of a double-walled carbon nanotube vol.54, pp.5, 2015, https://doi.org/10.12989/sem.2015.54.5.987
  3. Atomistic origin of radial corrugation in a few-walled carbon nanotubes: A molecular dynamics study vol.65, 2015, https://doi.org/10.1016/j.physe.2014.09.010
  4. WAVY-SHAPED DEFORMATION ANALYSIS OF MULTI-WALLED CARBON NANOTUBES USING MOLECULAR DYNAMICS METHOD vol.70, pp.2, 2014, https://doi.org/10.2208/jscejam.70.i_25