Artículos de revistas
The Structural And Dynamical Aspects Of Boron Nitride Nanotubes Under High Velocity Impacts
Registro en:
1463-9084
Physical Chemistry Chemical Physics. ROYAL SOC CHEMISTRY, n. 18, n. 22, p. 14776 - 14781.
1463-9076
WOS:000378273500003
10.1039/c6cp01949h
Autor
Machado
LD; Ozden
S; Tiwary
C; Autreto
PAS; Vajtai
R; Barrera
EV; Galvao
DS; Ajayan
PM
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) This communication report is a study on the structural and dynamical aspects of boron nitride nanotubes (BNNTs) shot at high velocities (similar to 5 km s(-1)) against solid targets. The experimental results show unzipping of BNNTs and the formation of hBN nanoribbons. Fully atomistic reactive molecular dynamics simulations were also carried out to gain insights into the BNNT fracture patterns and deformation mechanisms. Our results show that longitudinal and axial tube fractures occur, but the formation of BN nanoribbons fromfractured tubes was only observed for some impact angles. Although some structural and dynamical features of the impacts are similar to the ones reported for CNTs, because BNNTs are more brittle than CNTs this results in a larger number of fractured tubes but with fewer formed nanoribbons. 18
14776 14781 U.S. Department of Defense: U.S. Air Force Office of Scientific Research for the Project MURI: "Synthesis and Characterization of 3-D Carbon Nanotube Solid Networks'' Award [FA9550-12-1-0035] Center for Computational Engineering and Sciences at Unicamp through the FAPESP/CEPID [2013/08293-7] Brazilian Federal Agency CAPES via its PNPD program Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)