High-pressure Raman spectroscopy of carbon onions and nanocapsules

J. J. Guo, G. H. Liu, X. M. Wang, T. Fujita, B. S. Xu, M. W. Chen

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We report high-pressure Raman spectra of carbon onions and nanocapsules investigated by diamond anvil cell experiments. The pressure coefficient and elastic behavior of carbon onions and nanocapsules are found to be very similar to those of multiwall carbon nanotubes. Additionally, detectable structure changes, particularly the collapse of the concentric graphite structure, cannot been seen at pressures as high as ∼20 GPa, demonstrating that carbon onions and nanocapsules have significant hardness and can sustain very high pressures.

Original languageEnglish
Article number051920
JournalApplied Physics Letters
Issue number5
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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