TY - JOUR
T1 - Influence of surface energy on the pull-in instability of electrostatic nano-switches
AU - Yang, Fan
AU - Wang, Gang-Feng
AU - Long, Jian-Min
AU - Wang, Bao-Lin
PY - 2012
Y1 - 2012
N2 - In the present paper, we analyze the influence of surface energy on the pull-in instability of a cantilever-type nano-switch. The deformation of the movable nanosized electrode is described by the Euler-Bernoulli beam accounting for surface energy and the core–shell model. The interactions between two electrodes are depicted by such intermolecular forces as Casimir force, van der Waals force and electrostatic force. Through the principle of minimum potential energy, the differential equation governing the beam deformation, as well as the boundary conditions, is derived. Then using the homotopy perturbation method, the deformation and the pull-in voltage of nano-switch are analyzed. It is found that surface effects evidently affect the pull-in voltage of nano-switch, and the present model predicts the increase of pull-in voltage compared to the classical results. These results are helpful to design and calibrate nano-switches in NEMS.
AB - In the present paper, we analyze the influence of surface energy on the pull-in instability of a cantilever-type nano-switch. The deformation of the movable nanosized electrode is described by the Euler-Bernoulli beam accounting for surface energy and the core–shell model. The interactions between two electrodes are depicted by such intermolecular forces as Casimir force, van der Waals force and electrostatic force. Through the principle of minimum potential energy, the differential equation governing the beam deformation, as well as the boundary conditions, is derived. Then using the homotopy perturbation method, the deformation and the pull-in voltage of nano-switch are analyzed. It is found that surface effects evidently affect the pull-in voltage of nano-switch, and the present model predicts the increase of pull-in voltage compared to the classical results. These results are helpful to design and calibrate nano-switches in NEMS.
KW - nanostructured materials
KW - surface energy
UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:47000
U2 - 10.1166/jctn.2013.2841
DO - 10.1166/jctn.2013.2841
M3 - Article
SN - 1546-1955
VL - 10
SP - 1
EP - 5
JO - Journal of Computational and Theoretical Nanoscience
JF - Journal of Computational and Theoretical Nanoscience
IS - 5
ER -