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Proceedings Article

Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties

[+] Author Affiliations
F. Scarpa

Univ. of Bristol (United Kingdom)

J. Narojczyk, K. W. Wojciechowski

Institute of Molecular Physics (Poland)

D. J. Inman

Virginia Polytechnic Institute and State Univ. (USA)

Proc. SPIE 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, 798006 (March 29, 2011); doi:10.1117/12.881914
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From Conference Volume 7980

  • Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011
  • Vijay K. Varadan
  • San Diego, California, USA | March 06, 2011

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

F. Scarpa ; J. Narojczyk ; K. W. Wojciechowski and D. J. Inman
"Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties", Proc. SPIE 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, 798006 (March 29, 2011); doi:10.1117/12.881914; http://dx.doi.org/10.1117/12.881914


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