Transformation of multiwall carbon nanotubes to onions with layers cross-linked by sp3 bonds under high pressure and shear deformation
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · Carbon Nanotubes in Composites · Boron and Carbon Nanomaterials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Technological Institute for Superhard and Novel Carbon Materials 1 , 142190, 7a Centralnaya, Troitsk, Moscow, Russian Federation
Moscow Institute of Physics and Technology State University 3 , 141700, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russian Federation
M.V.Lomonosov Moscow State University 4 , 119991, Leninskie Gory 1, Moscow, Russian Federation
National University of Science and Technology MISiS 2 , 119049, Leninskiy prospekt 4, Moscow, Russian Federation
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