Irreversible pressure-induced transformation of boron nitride nanotubes

J Nanosci Nanotechnol. 2007 Jun;7(6):1810-4. doi: 10.1166/jnn.2007.721.

Abstract

We have used Raman spectroscopy to study the behavior of multi-walled boron nitride nanotubes and hexagonal boron nitride crystals under high pressure. While boron nitride nanotubes show an irreversible transformation at about 12 GPa, hexagonal boron nitride exhibits a reversible phase transition at 13 GPa. We also present molecular dynamics simulations which suggest that the irreversibility of the pressure-induced transformation in boron nitride nanotubes is due to the polar nature of the bonds between boron and nitrogen.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Boron Compounds / chemistry*
  • Computer Simulation
  • Crystallization / methods*
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Models, Chemical*
  • Models, Molecular*
  • Molecular Conformation
  • Nanotechnology / methods*
  • Nanotubes / chemistry*
  • Nanotubes / ultrastructure*
  • Particle Size
  • Pressure
  • Surface Properties

Substances

  • Boron Compounds
  • Macromolecular Substances
  • boron nitride