Investigating the effect of plate spacing and length on the performance of graphene nano-electromechanical switches using molecular dynamics method

Document Type : Full length research Paper

Author

Department of Physics, Faculty of Science, Arak University, Arak, Iran

Abstract

Reducing the dimensions of nano-switches is very important in terms of integration, but for some reasons, including empirical obstacles or theoretical complexity, nano-switches with small lengths have not been studied yet. In this study, the performance of graphene nano-switches with lengths of less than 30nm and very low plate spacing (about nm2) is simulated using a combination of molecular dynamics and method of moments. The obtained results are compared with some of the available theoretical models. The results show that by decreasing the length of the nano-ribbons or increasing distance between plates, the pull-in voltage of the nano-switches is increased. The results also show that in long nano-ribbons, there is a good agreement with theoretical results, but in the short ones, the existing theoretical relations are not sufficiently precise and cannot predict the pull-in voltage accurately. Furthermore the results show that the switching times of the simulated nano-switches are considerable less than conventional nano-switches.

Keywords

References

 
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Journal of Research on Many-body Systems
Volume 9, Issue 2
September 2019
Pages 161-171

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History

  • Receive Date: 16 July 2018
  • Revise Date: 17 October 2018
  • Accept Date: 22 July 2019

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