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Application of elastically supported single-walled carbon nanotubes for sensing arbitrarily attached nano-objects

Kiani, K ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cap.2012.06.023
  3. Abstract:
  4. The potential application of SWCNTs as mass nanosensors is examined for a wide range of boundary conditions. The SWCNT is modeled via nonlocal Rayleigh, Timoshenko, and higher-order beam theories. The added nano-objects are considered as rigid solids, which are attached to the SWCNT. The mass weight and rotary inertial effects of such nanoparticles are appropriately incorporated into the nonlocal equations of motion of each model. The discrete governing equation pertinent to each model is obtained using an effective meshless technique. The key factor in design of a mass nanosensor is to determine the amount of frequency shift due to the added nanoparticles. Through an inclusive parametric study, the roles of slenderness ratio of the SWCNT, small-scale parameter, mass weight, number of the attached nanoparticles, and the boundary conditions of the SWCNT on the frequency shift ratio of the first flexural vibration mode of the SWCNT as a mass sensor are also discussed
  5. Keywords:
  6. Meshless method ; Nanomechanical sensor ; Nonlocal continuum-based beam models ; Single-walled carbon nanotube (SWCNT) ; Vibration ; Beam model ; Beam theories ; Flexural vibration modes ; Frequency shift ; Governing equations ; Inertial effect ; Key factors ; Mass sensor ; Mesh-less methods ; Meshless techniques ; Nano-objects ; Nanomechanical sensors ; Nonlocal ; Parametric study ; Potential applications ; Rayleigh ; Slenderness ratios ; Boundary conditions ; Equations of motion ; Frequency shift keying ; Nanoparticles ; Single-walled carbon nanotubes (SWCN) ; Nanosensors
  7. Source: Current Applied Physics ; Volume 13, Issue 1 , 2013 , Pages 107-120 ; 15671739 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S1567173912002672