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Proceedings Paper

Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties
Author(s): F. Scarpa; J. Narojczyk; K. W. Wojciechowski; D. J. Inman
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Paper Abstract

The mechanical deformation and dynamics properties of single wall carbon nanotube heterojunctions (HJ) oscillators are investigated using an hybrid finite element atomistic-continuum approach. The nanotube HJs provide a peculiar deformation pattern, with combined bending and axial stretching of carbon nanotubes (CNTs), and a broad agreement of their axial stiffness with spring series continuum mechanics and existing molecular dynamics (MD) simulations. We show also peculiar distributions of the natural frequencies and modes of the hetero-junctions compared to classical single-wall nanotube configurations, and the mass-sensor capability of (5,5)-(10,10) SWCNT HJ structures, with frequency shifts highly depending on the heterojunction section subjected to the mass loading.

Paper Details

Date Published: 29 March 2011
PDF: 9 pages
Proc. SPIE 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, 798006 (29 March 2011); doi: 10.1117/12.881914
Show Author Affiliations
F. Scarpa, Univ. of Bristol (United Kingdom)
J. Narojczyk, Institute of Molecular Physics (Poland)
K. W. Wojciechowski, Institute of Molecular Physics (Poland)
D. J. Inman, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 7980:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011
Vijay K. Varadan, Editor(s)

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