| Autor: |
Pankov, A. M., Bredikhina, A. S., Kulnitskiy, B. A., Perezhogin, I. A., Skryleva, E. A., Parkhomenko, Yu. N., Popov, M. Yu., Blank, V. D. |
| Předmět: |
|
| Zdroj: |
AIP Advances; Aug2017, Vol. 7 Issue 8, p085218-1-085218-6, 6p, 2 Black and White Photographs, 1 Chart, 2 Graphs |
| Abstrakt: |
A pressure-induced phase transition of multiwall carbon nanotubes (MWNT) to a new structure at room temperature is studied using a shear diamond anvil cell, X-ray photoelectron spectra (XPS), transmission electron microscope (TEM) and Raman procedures. We observe a cardinal pressure-induced change in the nanoparticles shape from multi-shell tubes to multi-shell spheres. MWNT transforms to onions with layers cross-linked by sp3 bonds under the 45-65 GPa compressive stress combined with shear deformation at room temperature. TEM and XPS results show that about 40% of the carbon atoms in the new phase are sp3-bounded. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
