Large deflections mechanical analysis of a suspended single-wall carbon nanotube under thermoelectrical loading

  • Authors:

  • Assaf Ya'akobovitz;Slava Krylov;Yael Hanein

  • Affiliations:

  • School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel;School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel;School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel

  • Venue:
  • Journal of Nanomaterials - Special issue on low-dimensional carbon nanomaterials: synthesis, properties, and applications
  • Year:
  • 2011

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Abstract

Following the recent progress in integrating single-wall carbon nanotubes (SWCNTs) into silicon-based microelectromechanical systems (MEMS), new modeling tools are needed to predict their behavior under different loads, including thermal, electrical and mechanical. In the present study, the mechanical behavior of SWCNTs under thermoelectrical loading is analyzed using a large deflection geometrically nonlinear string model. The effect of the resistive heating was found to have a substantial influence on the SWCNTs behavior, including significant enhancement of the strain (up to the millistrains range) and buckling due to the thermal expansion. The effect of local buckling sites was also studied and was found to enhance the local strain. The theoretical and numerical results obtained in the present study demonstrate the importance of resistive heating in the analysis of SWCNTs and provide an additional insight into the unique mechanics of suspended SWCNTs.