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Theoretical study of the effect of زasimir attraction on the pull-in behavior of beam-type NEMS using modified Adomian method

Koochi, A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1016/j.physe.2010.10.009
  3. Publisher: 2010
  4. Abstract:
  5. In this paper, modified Adomian decomposition (MAD) is introduced to investigate the effect of the Casimir attraction on pull-in instability of beam-type NEMS theoretically. Two engineering cases including cantilever and double cantilever nano-beam are considered. The proposed MAD method is employed to solve the nonlinear constitutive equation of nano-beams. The basic engineering parameters such as critical deflection and pull-in voltage of nano-beams are computed. It is found that the Casimir forces decrease the pull-in deflection and voltage of nano-beams. On the other hand, the fringing field increases the pull-in deflection while decreases the pull-in voltage of the actuators. As a special case in this work, the instability of freestanding nano-beams is investigated due to the Casimir attraction. The analytical MAD solutions are compared with numerical ones and lumped model, as well as other methods in the literature
  6. Keywords:
  7. Adomian decomposition ; Adomian method ; Casimir ; Casimir force ; Engineering parameters ; Fringing fields ; Lumped models ; Nonlinear constitutive equations ; Pull-in ; Pull-in instability ; Pull-in voltage ; Theoretical study ; Nanocantilevers ; Nonlinear equations ; Numerical methods
  8. Source: Physica E: Low-Dimensional Systems and Nanostructures ; Volume 43, Issue 2 , 2010 , Pages 625-632 ; 13869477 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1386947710005898